Sean Wang [Sun, 20 May 2018 17:01:48 +0000 (01:01 +0800)]
pinctrl: mediatek: refactor EINT related code for all MediaTek pinctrl can fit
This patch is in preparation for adding EINT support to MT7622 pinctrl,
and the refactoring doesn't alter any existent logic.
A reason we have to refactor EINT code pieces into a generic way is that
currently, they're tightly coupled with a certain type of MediaTek pinctrl
would cause a grown in a very bad way as there is different types of
pinctrl devices getting to join.
Therefore, it is an essential or urgent thing that EINT code pieces are
refactored to eliminate any dependencies across GPIO and EINT as possible.
Additional structure mtk_eint_[xt, hw, regs] are being introduced for
indicating how maps being designed between GPIO and EINT hw number, how to
set and get GPIO state for a certain EINT pin, what characteristic on a
EINT device is present on various SoCs.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Sean Wang [Sun, 20 May 2018 17:01:47 +0000 (01:01 +0800)]
dt-bindings: pinctrl: add external interrupt support to MT7622 pinctrl
Extend the capability of MT7622 pinctrl with adding EINT so that each
GPIO can be used to notify CPU when a signal state is changing on the
line as an external interrupt.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fabio Estevam [Sat, 19 May 2018 18:43:54 +0000 (15:43 -0300)]
pinctrl: freescale: Switch to SPDX identifier
Adopt the SPDX license identifier headers to ease license compliance
management.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Walleij [Thu, 24 May 2018 07:06:14 +0000 (09:06 +0200)]
Merge tag 'samsung-pinctrl-4.18-2' of https://git./linux/kernel/git/pinctrl/samsung into devel
Samsung pinctrl drivers changes for v4.18
1. Driver expects specific order of GPIO interrupt banks. For S5Pv220
and Exynos5410 this order was not preserved so fix and document it.
2. Remove support for Exynos5440 (tree-wide, support is dropped because
there are no real users of this platform, it also did not get testing
since long time).
3. Fix lost state of GPF1..5 pins on Exynos5433 during system suspend.
Linus Walleij [Thu, 24 May 2018 07:05:02 +0000 (09:05 +0200)]
Merge tag 'sh-pfc-for-v4.18-tag2' of git://git./linux/kernel/git/geert/renesas-drivers into devel
pinctrl: sh-pfc: Updates for v4.18 (take two)
- Add support for the new R-Car E3 SoC,
- Add I2C pin groups on R-Car M3-N,
- Small fixes and cleanups.
Marek Szyprowski [Mon, 21 May 2018 06:34:49 +0000 (08:34 +0200)]
pinctrl: samsung: Fix suspend/resume for Exynos5433 GPF1..5 banks
GPF1..5 banks in Exynos5433 are located in two pinctrl devices: ALIVE and
IMEM. Although they are partially located in ALIVE section, the state of
their registers in IMEM section is lost after suspend/resume cycle. To
properly handle such case, those banks have to be defined with standard
'exynos5433_bank_type_off' type (with PINCFG_TYPE_CON_PDN and
PINCFG_TYPE_PUD_PDN register offsets). This automatically instructs
the generic Samsung pinctrl suspend/resume code to save and restore state
of those registers.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Geert Uytterhoeven [Mon, 14 May 2018 19:30:02 +0000 (21:30 +0200)]
pinctrl: sh-pfc: rcar-gen3: Fix grammar in static pin comments
The comment block explaining the rationale for static pins contains
grammar errors. It appeared first in the pin control driver for R-Car
H3 ES1.x, and spread to R-Car M3-W, H3 ES2.0, and M3-N later.
Fix the grammar in all copies at once.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Niklas Söderlund [Sun, 13 May 2018 11:35:05 +0000 (13:35 +0200)]
pinctrl: sh-pfc: r8a77965: Add I2C pin support
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Takeshi Kihara [Fri, 11 May 2018 03:22:27 +0000 (12:22 +0900)]
pinctrl: sh-pfc: r8a77990: Add EthernetAVB pins, groups and functions
This patch adds group and function of AVB PHY, LINK, MAGIC, MII and PTP
pins for the R8A77990 SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Takeshi Kihara [Fri, 11 May 2018 03:22:26 +0000 (12:22 +0900)]
pinctrl: sh-pfc: r8a77990: Add I2C{1,2,4,5,6,7} pins, groups and functions
This patch adds I2C{1,2,4,5,6,7} pins, groups and functions to
the R8A77990 SoC.
NOTE: I2C0 and I2C3 are not pin multiplexed.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Takeshi Kihara [Fri, 11 May 2018 03:22:25 +0000 (12:22 +0900)]
pinctrl: sh-pfc: r8a77990: Add SCIF pins, groups and functions
This patch adds SCIF{0,1,2,3,4,5} pins, groups and functions to R8A77990
SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Takeshi Kihara [Fri, 11 May 2018 03:22:24 +0000 (12:22 +0900)]
pinctrl: sh-pfc: r8a77990: Add bias pinconf support
This patch implements control of pull-up and pull-down. On this SoC there
is no simple mapping of GP pins to bias register bits, so we need a table.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Takeshi Kihara [Fri, 11 May 2018 03:22:23 +0000 (12:22 +0900)]
pinctrl: sh-pfc: Initial R8A77990 PFC support
This patch adds initial pinctrl driver to support for the R8A77990 SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Takeshi Kihara [Fri, 11 May 2018 03:22:22 +0000 (12:22 +0900)]
pinctrl: sh-pfc: Add PORT_GP_11 helper macro
This follows the style of existion PORT_GP_X macros and
will be used by a follow-up patch for the r8a77990 SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Jisheng Zhang [Wed, 16 May 2018 07:33:37 +0000 (15:33 +0800)]
pinctrl: berlin: switch to SPDX license identifier
Use the appropriate SPDX license identifier in the berlin pinctrl
driver source file and drop the previous license text.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Shawn Lin [Thu, 3 May 2018 08:04:42 +0000 (16:04 +0800)]
pinctrl: rockchip: Add set_config callback support for gpiolib
Could only support PIN_CONFIG_INPUT_DEBOUNCE now as the HW block
is too simple to support others. But even wrt. debounce capability,
it now could only support very limited period of time to satisfy the
real usecase. But still be useful to enable the crippled HW debounce
to prevent any spurious glitches from waking up the system if the
gpio is conguired as wakeup interrupt source.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
David Wu [Mon, 14 May 2018 11:59:51 +0000 (19:59 +0800)]
pinctrl: rockchip: Add pinctrl support for PX30
There are 4 banks (GPIO0 ~ GPIO3), bank0 is in PD_PMU
subsystem, bank1/bank2/bank3 are in PD_BUS subsystem.
Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Chris Packham [Fri, 4 May 2018 03:06:37 +0000 (15:06 +1200)]
pinctrl: mvebu: update use "nand" function for "rb" pin
The Armada 98dx3236 SoCs don't have a different MPP sel value for nand
specific pins so "dev" was technically correct. But all the other Armada
SoCs use "nand" in their dts and the pin is specific to the nand
interface so use "nand" for the function name.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Manivannan Sadhasivam [Sun, 20 May 2018 05:17:36 +0000 (10:47 +0530)]
MAINTAINERS: Add Actions Semi S900 pinctrl entries
Add S900 pinctrl entries under ARCH_ACTIONS
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Manivannan Sadhasivam [Sun, 20 May 2018 05:17:35 +0000 (10:47 +0530)]
pinctrl: actions: Add gpio support for Actions S900 SoC
Add gpio support to pinctrl driver for Actions Semi S900 SoC.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Manivannan Sadhasivam [Sun, 20 May 2018 05:17:32 +0000 (10:47 +0530)]
dt-bindings: pinctrl: Add gpio bindings for Actions S900 SoC
Add gpio bindings for Actions Semi S900 SoC.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Keerthy [Thu, 17 May 2018 04:40:21 +0000 (10:10 +0530)]
pinctrl: pinctrl-single: Add functions to save and restore pinctrl context
This adds a pair of context save/restore functions to save/restore the
state of a set of pinctrl registers. The context is lost during rtc only
suspend with ddr in self-refresh on am43xx. Currently the save/restore
is being done unconditionally. This will be optimized later with a
pdata-quirk function which will allow is to save/restore only when doing
the rtc only mode with ddr in self refresh.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Yixun Lan [Wed, 9 May 2018 22:08:27 +0000 (22:08 +0000)]
pinctrl: nand: meson-gxl: fix missing data pins
The data pin 0-7 of the NAND controller are actually missing from
the nand pinctrl group, so we fix it here.
Fixes: 0f15f500ff2c ("pinctrl: meson: Add GXL pinctrl definitions")
Reported-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Yixun Lan [Wed, 9 May 2018 22:08:26 +0000 (22:08 +0000)]
pinctrl: nand: meson-gxbb: fix missing data pins
The data pin 0-7 of the NAND controller are actually missing from
the nand pinctrl group, so we fix it here.
Fixes: cd1e3b01c7d3 ("pinctrl: amlogic: gxbb: add nand pins")
Reported-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stephen Boyd [Tue, 8 May 2018 00:15:23 +0000 (17:15 -0700)]
pinctrl: qcom: Print high/low status of gpios in debugfs
I was debugging some gpio issues and I thought that the output of gpio
debugfs was telling me the high or low level of the gpios with a '1' or
a '0'. We saw a line like this though:
gpio93 : in 4 2mA pull down
and I started to think that there may be a gas leak in the building
because '4' doesn't mean high or low, and other pins said '0' or '1'. It
turns out, '4' is the function selection for the pinmux of the gpio and
not the value on the pin. Reading code helps decipher what debugfs is
actually saying.
Add support to read the input or output pin depending on how the pin is
configured so we can easily see the high or low value of the pin in
debugfs. Now the output looks like
gpio93 : in low func4 2mA pull down
which clearly shows that the pin is an input, low, with function 4 and a
2mA drive strength plus a pull down.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Chris Packham [Mon, 7 May 2018 02:25:55 +0000 (14:25 +1200)]
pinctrl: mvebu: use correct MPP sel value for dev pins
The "dev" function is selected with the value 0x4 not 0x01.
Fixes: commit d7ae8f8dee7f ("pinctrl: mvebu: pinctrl driver for 98DX3236 SoC")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Clément Péron [Fri, 4 May 2018 23:57:28 +0000 (16:57 -0700)]
pinctrl: qcom: fix wrong pull status display for no_keeper SoC
DebugFS strings about pin pull status for no_keeper SoC are wrong
Fix this by adding a different string array for no_keeper SoC
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Dmitry Osipenko [Thu, 3 May 2018 22:55:34 +0000 (01:55 +0300)]
pinctrl: tegra20: Provide CDEV1/2 clock muxes
Muxing of pins MCLK1/2 determine the muxing of the corresponding clocks.
Make pinctrl driver to provide clock muxes for the CDEV1/2 pingroups, so
that main clk-controller driver could get an actual parent clock for the
CDEV1/2 clocks.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Marcel Ziswiler <marcel@ziswiler.com>
Tested-by: Marcel Ziswiler <marcel@ziswiler.com>
Tested-by: Marc Dietrich <marvin24@gmx.de>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Icenowy Zheng [Thu, 3 May 2018 18:38:43 +0000 (02:38 +0800)]
pinctrl: sunxi: add support for H6 R_PIO pin controller
Allwinner H6 SoC has a R_PIO pin controller like other Allwinner SoCs,
which controls the PL and PM pin banks.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Andy Shevchenko [Thu, 3 May 2018 17:26:42 +0000 (20:26 +0300)]
pinctrl: armada-37xx: Convert to use match_string() helper
The new helper returns index of the matching string in an array.
We are going to use it here.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Matheus Castello [Tue, 1 May 2018 00:42:14 +0000 (20:42 -0400)]
pinctrl: bcm2835: Add support for output-low output-high properties
Properties to set initial value of pin output buffer.
This can be useful for configure hardware in overlay files, and in early
boot for checking it states in QA sanity tests.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Matheus Castello [Tue, 1 May 2018 00:42:13 +0000 (20:42 -0400)]
pinctrl: bcm2835: Add support for generic pinctrl binding
To keep driver up to date we add generic pinctrl binding support, which
covers the features used in this driver and has additional node properties
that this SoC has compatibility, so enabling future implementations of
these properties without the need to create new node properties in the
device trees.
The logic of this change maintain the old brcm legacy binding support in
order to keep the ABI stable.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Biju Das [Tue, 24 Apr 2018 11:03:08 +0000 (12:03 +0100)]
pinctrl: sh-pfc: Add r8a77470 PFC support
Add PFC support for the R8A77470 SoC including pin groups for
some on-chip devices such as SCIF and MMC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Takeshi Kihara [Sun, 29 Apr 2018 19:48:14 +0000 (04:48 +0900)]
pinctrl: sh-pfc: r8a77965: Add SDHI pins, groups and functions
This patch adds SDHI{0,1,2,3} pins, groups and functions to the R8A77965
SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Kieran Bingham [Fri, 27 Apr 2018 16:57:13 +0000 (17:57 +0100)]
pinctrl: sh-pfc: r8a77965: Add DU RGB output pins, groups and functions
This patch adds pins, groups and functions for parallel RGB output
signals from DU. The HDMI and TCON pins are added to separate groups.
Based on a similar patch of the R8A7796 PFC driver by Niklas Söderlund
<niklas.soderlund+renesas@ragnatech.se>.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
[Kieran: Rebase on top of tree]
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Thomas Gleixner [Sun, 22 Apr 2018 22:02:10 +0000 (00:02 +0200)]
pinctrl: sh-pfc: r8a77965: Fixup incorrect SPDX identifier
GPL-2. is not a valid SPDX identifier. Make it GPL-2.0
Fixes: 490e687eb8b2 ("pinctrl: sh-pfc: Initial R-Car M3-N support")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Sergei Shtylyov [Thu, 19 Apr 2018 18:52:28 +0000 (21:52 +0300)]
pinctrl: sh-pfc: r8a77970: Fix pin I/O voltage control support
I've included the pin I/O voltage control into the R8A77970 PFC driver but
it was incomplete because:
- SH_PFC_PIN_CFG_IO_VOLTAGE pin flags weren't set properly;
- sh_pfc_soc_info::ioctrl_regs wasn't set at all...
Fixes: b92ac66a1819 ("pinctrl: sh-pfc: Add R8A77970 PFC support")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Sergei Shtylyov [Thu, 19 Apr 2018 18:27:34 +0000 (21:27 +0300)]
pinctrl: sh-pfc: r8a77980: Add pin I/O voltage control support
Add the pin I/O voltage level control support to the R8A77980 PFC driver.
Loosely based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Biju Das [Wed, 4 Apr 2018 15:22:57 +0000 (16:22 +0100)]
dt-bindings: pinctrl: sh-pfc: Document r8a77470 PFC support
Document PFC support for the R8A77470 SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Takeshi Kihara [Fri, 23 Mar 2018 11:31:46 +0000 (20:31 +0900)]
pinctrl: sh-pfc: r8a77965: Add PWM pins, groups and functions
This patch adds PWM{0,1,2,3,4,5,6} pins, groups and functions to
R8A77965 SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Geert Uytterhoeven [Thu, 22 Mar 2018 14:01:53 +0000 (15:01 +0100)]
pinctrl: sh-pfc: r8a7796: Fix comment for MSIOF3 SS2_E pin
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Geert Uytterhoeven [Thu, 22 Mar 2018 14:01:13 +0000 (15:01 +0100)]
pinctrl: sh-pfc: r8a7795: Fix comment for MSIOF3 SS2_E pin
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Takeshi Kihara [Thu, 14 Dec 2017 04:06:13 +0000 (13:06 +0900)]
pinctrl: sh-pfc: r8a77965: Add MSIOF pins, groups and functions
This patch adds MSIOF{0,1,2,3} pins, groups and functions to the
R8A77965 SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
[geert: Correct MSIOF3 SS2_E comment]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Krzysztof Kozlowski [Tue, 24 Apr 2018 20:32:36 +0000 (22:32 +0200)]
pinctrl: samsung: Remove support for Exynos5440
The Exynos5440 is not actively developed, there are no development
boards available and probably there are no real products with it.
Remove wide-tree support for Exynos5440.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Dong Aisheng [Fri, 27 Apr 2018 19:01:50 +0000 (03:01 +0800)]
pinctrl: imx: use seq_puts() instead of seq_printf()
For a constant format without additional arguments, use seq_puts()
instead of seq_printf(). Also, it fixes the following checkpatch
warning.
WARNING: Prefer seq_puts to seq_printf
+ seq_printf(s, "N/A");
WARNING: Prefer seq_puts to seq_printf
+ seq_printf(s, "\n");
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Dong Aisheng [Fri, 27 Apr 2018 19:01:49 +0000 (03:01 +0800)]
pinctrl: pinctrl-imx: improve the code comments of PIN_FUNC_ID
The current code comments of PIN_FUNC_ID actually is not true for
SHARE_MUX_CONF_REG case which should be a 4 u32 PIN_FUNC_ID.
Fix the comments and re-org it a bit for better extendibility
as we may add a different size for SCU based PIN_FUNC_ID later.
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Dong Aisheng [Fri, 27 Apr 2018 19:01:48 +0000 (03:01 +0800)]
pinctrl: imx: fix unsigned check if nfuncs with less than or equal zero
The unsigned integer nfuncs is being error checked with a value less
or equal to zero; this is always false if of_get_child_count returns a
-ve for an error condition since nfuncs is not signed. Fix this by
making variables nfuncs and i signed integers.
Detected with Coccinelle:
drivers/pinctrl/freescale/pinctrl-imx.c:620:6-12: WARNING: Unsigned
expression compared with zero: nfuncs <= 0
Cc: Linus Walleij <linus.walleij@linaro.org>
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Katsuhiro Suzuki [Fri, 27 Apr 2018 01:49:05 +0000 (10:49 +0900)]
pinctrl: uniphier: add LD11 MPEG2-TS I/O pin-mux settings
The MPEG2-TS input/output core both accepts serial TS and parallel TS.
The serial TS interface uses following pins:
hscin0_s : HS0DOUT[0-3]
hscin1_s : HS0DOUT[4-7]
hscin2_s : HS1BCLKIN, HS1SYNCIN, HS1VALIN, HS1DIN0
hscout0_s: HS0DOUT[0-3]
hscout1_s: HS0DOUT[4-7]
And the parallel TS interface uses following pins:
hscin0_p : HS0BCLKIN, HS0SYNCIN, HS0VALIN, HS0DIN[0-7]
hscin1_p : HS1BCLKIN, HS1SYNCIN, HS1VALIN, HS1DIN[0-7]
hscout0_p: HS0BCLKOUT, HS0SYNCOUT, HS0VALOUT, HS0DOUT[0-7]
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Katsuhiro Suzuki [Fri, 27 Apr 2018 01:49:04 +0000 (10:49 +0900)]
pinctrl: uniphier: add LD20 MPEG2-TS I/O pin-mux settings
The MPEG2-TS input/output core both accepts serial TS and parallel TS.
The serial TS interface uses following pins:
hscin0_s : HS0DOUT[0-3]
hscin1_s : HS0DOUT[4-7]
hscin2_s : HS1BCLKIN, HS1SYNCIN, HS1VALIN, HS1DIN0
hscin3_s : HS1DIN[2-5]
hscout0_s: HS0DOUT[0-3]
hscout1_s: HS0DOUT[4-7]
And the parallel TS interface uses following pins:
hscin0_p : HS0BCLKIN, HS0SYNCIN, HS0VALIN, HS0DIN[0-7]
hscin1_p : HS1BCLKIN, HS1SYNCIN, HS1VALIN, HS1DIN[0-7]
hscout0_p: HS0BCLKOUT, HS0SYNCOUT, HS0VALOUT, HS0DOUT[0-7]
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Manivannan Sadhasivam [Tue, 1 May 2018 03:00:47 +0000 (08:30 +0530)]
pinctrl: actions: Fix Kconfig dependency and help text
1. Fix Kconfig dependency for Actions Semi S900 pinctrl driver which
generates below warning in x86:
WARNING: unmet direct dependencies detected for PINCTRL_OWL
Depends on [n]: PINCTRL [=y] && (ARCH_ACTIONS || COMPILE_TEST [=n]) && OF [=n]
Selected by [y]:
- PINCTRL_S900 [=y] && PINCTRL [=y]
2. Add help text for OWL pinctrl driver
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Colin Ian King [Mon, 30 Apr 2018 13:22:59 +0000 (14:22 +0100)]
pinctrl: actions: fix missing break in PIN_CONFIG_DRIVE_STRENGTH case.
There is a missing break in case PIN_CONFIG_DRIVE_STRENGTH leading to
a fall-through to the PIN_CONFIG_SLEW_RATE case that performs different
checks against *arg. This looks like an unintentional missing break so
add in the break.
Detected by CoverityScan, CID#
1468456,
1468459 ("Missing break in switch")
Fixes: 513d7a2f7e0f ("pinctrl: actions: Add Actions S900 pinctrl driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Colin Ian King [Mon, 30 Apr 2018 13:04:34 +0000 (14:04 +0100)]
pinctrl: actions: make s900_functions, s900_padinfo and s900_pads static
s900_functions, s900_padinfo and s900_pads are local to the source and do
not need to be in global scope, so make them static.
Cleans up sparse warnings:
drivers/pinctrl/actions/pinctrl-s900.c:1445:30: warning: symbol
's900_functions' was not declared. Should it be static?
drivers/pinctrl/actions/pinctrl-s900.c:1664:20: warning: symbol
's900_padinfo' was not declared. Should it be static?
drivers/pinctrl/actions/pinctrl-s900.c:207:31: warning: symbol
's900_pads' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Jerome Brunet [Mon, 9 Apr 2018 14:54:29 +0000 (16:54 +0200)]
pinctrl: meson: axg: add tdm pins
Add the information related to the tdm pins of the A113D SoC
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Martin Blumenstingl [Sun, 22 Apr 2018 10:53:30 +0000 (12:53 +0200)]
pinctrl: meson: meson8: add the RGMII RXD2/RXD3 and TXD2/TXD3 signals
These are only available on the Meson8m2 SoC (which uses the same
DesignWare Ethernet MAC as Meson8b).
The "eth_tx_clk_50m" signal either provides a 50MHz clock for the RMII
PHYs or the RGMII TX clock (as far as we know the frequency is
controlled by the PRG_ETHERNET registers in the Ethernet MAC "glue" IP
block).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Martin Blumenstingl [Sun, 22 Apr 2018 10:53:29 +0000 (12:53 +0200)]
pinctrl: meson: meson8: add support for the Meson8m2 SoC
Add Meson8m2 support to the existing Meson8 pinctrl driver. Since there
are only very few changes (Meson8m2 has an extra signal on 10 CBUS pins,
no other differences were found so far).
Add the new compatible strings for Meson8m2 to the existing Meson8
driver so we don't have to duplicate the whole driver.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Martin Blumenstingl [Sun, 22 Apr 2018 10:53:28 +0000 (12:53 +0200)]
dt-bindings: pinctrl: meson: add support for the Meson8m2 SoC
The Meson8m2 SoC is a variant of Meson8 with some updates from Meson8b
(such as the Gigabit capable DesignWare MAC).
It is mostly pin compatible with Meson8, only 10 (existing) CBUS pins
get an additional function (four of these are Ethernet RXD2, RXD3, TXD2
and TXD3 which are required when the board uses an RGMII PHY).
The AOBUS pins seem to be identical on Meson8 and Meson8m2.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Ryder Lee [Mon, 16 Apr 2018 02:32:19 +0000 (10:32 +0800)]
pinctrl: mediatek: update pinmux defintions for MT7623
Fulfill the pinmux macros for MT7623
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Ricardo Silva [Wed, 11 Apr 2018 21:42:57 +0000 (22:42 +0100)]
dt-bindings: pinctrl: mcp23s08: Clarify gpiospec flags cell usage
The pinctrl-mcp23s08 driver doesn't provide a specific gpiospec
of_xlate() function, causing the gpiolib-of's of_gpio_simple_xlate()
function to be used instead, which takes the gpiospec's second cell as
the flags specifier according to 'include/dt-bindings/gpio/gpio.h'.
The pinctrl-mcp23s08 bindings document was mentioning that the flags
were unused, which is not accurate because values in that second cell
are indeed used by the gpiolib-of's of_gpio_simple_xlate() for
configuring the gpio (e.g. its polarity).
This way, replace the "flags currently unused" reference in the
dt-bindings document with references to the appropriate files specifying
the possible flag values and gpiospec description.
CC: devicetree@vger.kernel.org
Signed-off-by: Ricardo Silva <rjpdasilva@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Matheus Castello [Wed, 11 Apr 2018 04:58:44 +0000 (00:58 -0400)]
dt-bindings: pinctrl: bcm2835-gpio: Add generic pinctrl support
Added generic pin configuration and multiplexing support,
and should be preferred than brcm legacy one.
Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Timur Tabi [Wed, 25 Apr 2018 22:43:27 +0000 (17:43 -0500)]
pinctrl: qcom: qdf2xxx: add support for new ACPI HID QCOM8002
Newer versions of the firmware for the Qualcomm Datacenter Technologies
QDF2400 restricts access to a subset of the GPIOs on the TLMM. To
prevent older kernels from accidentally accessing the restricted GPIOs,
we change the ACPI HID for the TLMM block from QCOM8001 to QCOM8002,
and introduce a new property "gpios". This property is an array of
specific GPIOs that are accessible. When an older kernel boots on
newer (restricted) firmware, it will fail to probe.
To implement the sparse GPIO map, we register all of the GPIOs, but
fill in the data only for available GPIOs. This ensures that the driver
cannot accidentally access an unavailable GPIO.
The pinctrl-msm driver also scans the "gpios" property to determine
which pins are available, and ensure that only those can be registered.
Support for QCOM8001 is removed as there is no longer any firmware that
implements it.
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Timur Tabi [Wed, 25 Apr 2018 22:43:26 +0000 (17:43 -0500)]
pinctrl: qcom: remove static globals to allow multiple TLMMs
Two data structures are declared as static globals but are intended to
be per-TLMM. Move them into the msm_pinctrl structure and initialize
them at runtime.
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Manivannan Sadhasivam [Wed, 4 Apr 2018 17:22:52 +0000 (22:52 +0530)]
pinctrl: actions: Add Actions S900 pinctrl driver
Add pinctrl driver for Actions Semi S900 SoC. The driver supports
pinctrl, pinmux and pinconf functionalities through a range of registers
common to both gpio driver and pinctrl driver.
Pinmux functionality is available only for the pin groups while the
pinconf functionality is available for both pin groups and individual
pins.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Chanho Park [Tue, 27 Mar 2018 13:58:01 +0000 (22:58 +0900)]
pinctrl: samsung: add pin_dbg_show callback for debugfs
This patch adds a samsung_pin_dbg_show function to implement the
pin_dbg_show callback function which can be used to show pin
confuration values. Basically, it can show pin setting values by
accessing the "pins" node like below:
$ cat pins
pin 0 (gpy7-0) CON(0x0) DAT(0x1) PUD(0x1) DRV(0x0) CON_PDN(0x0) PUD_PDN(0x0)
Signed-off-by: Chanho Park <parkch98@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Paweł Chmiel [Mon, 16 Apr 2018 15:52:46 +0000 (17:52 +0200)]
pinctrl: samsung: Document required order of banks
This patch documents requirement coming from the way
exynos_eint_gpio_irq() is working now, which expects EINTG banks to be
at the beginning of the bank arrays.
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Paweł Chmiel [Mon, 16 Apr 2018 15:52:45 +0000 (17:52 +0200)]
pinctrl: samsung: Correct EINTG banks order
All banks with GPIO interrupts should be at beginning of bank array and
without any other types of banks between them. This order is expected
by exynos_eint_gpio_irq, when doing interrupt group to bank translation.
Otherwise, kernel NULL pointer dereference would happen when trying to
handle interrupt, due to wrong bank being looked up. Observed on
s5pv210, when trying to handle gpj0 interrupt, where kernel was mapping
it to gpi bank.
Cc: stable@vger.kernel.org
Fixes: 023e06dfa688 ("pinctrl: exynos: add exynos5410 SoC specific data")
Fixes: 608a26a7bc04 ("pinctrl: Add s5pv210 support to pinctrl-exynos)
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Linus Torvalds [Mon, 16 Apr 2018 01:24:20 +0000 (18:24 -0700)]
Linux 4.17-rc1
Linus Torvalds [Mon, 16 Apr 2018 01:08:35 +0000 (18:08 -0700)]
Merge tag 'for-4.17-part2-tag' of git://git./linux/kernel/git/kdave/linux
Pull more btrfs updates from David Sterba:
"We have queued a few more fixes (error handling, log replay,
softlockup) and the rest is SPDX updates that touche almost all files
so the diffstat is long"
* tag 'for-4.17-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: Only check first key for committed tree blocks
btrfs: add SPDX header to Kconfig
btrfs: replace GPL boilerplate by SPDX -- sources
btrfs: replace GPL boilerplate by SPDX -- headers
Btrfs: fix loss of prealloc extents past i_size after fsync log replay
Btrfs: clean up resources during umount after trans is aborted
btrfs: Fix possible softlock on single core machines
Btrfs: bail out on error during replay_dir_deletes
Btrfs: fix NULL pointer dereference in log_dir_items
Linus Torvalds [Mon, 16 Apr 2018 01:06:22 +0000 (18:06 -0700)]
Merge tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"SMB3 fixes, a few for stable, and some important cleanup work from
Ronnie of the smb3 transport code"
* tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: change validate_buf to validate_iov
cifs: remove rfc1002 hardcoded constants from cifs_discard_remaining_data()
cifs: Change SMB2_open to return an iov for the error parameter
cifs: add resp_buf_size to the mid_q_entry structure
smb3.11: replace a 4 with server->vals->header_preamble_size
cifs: replace a 4 with server->vals->header_preamble_size
cifs: add pdu_size to the TCP_Server_Info structure
SMB311: Improve checking of negotiate security contexts
SMB3: Fix length checking of SMB3.11 negotiate request
CIFS: add ONCE flag for cifs_dbg type
cifs: Use ULL suffix for 64-bit constant
SMB3: Log at least once if tree connect fails during reconnect
cifs: smb2pdu: Fix potential NULL pointer dereference
Linus Torvalds [Mon, 16 Apr 2018 00:24:12 +0000 (17:24 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of minor (and safe changes) that didn't make the initial
pull request plus some bug fixes.
The status handling code is actually a running regression from the
previous merge window which had an incomplete fix (now reverted) and
most of the remaining bug fixes are for problems older than the
current merge window"
[ Side note: this merge also takes the base kernel git repository to 6+
million objects for the first time. Technically we hit it a couple of
merges ago already if you count all the tag objects, but now it
reaches 6M+ objects reachable from HEAD.
I was joking around that that's when I should switch to 5.0, because
3.0 happened at the 2M mark, and 4.0 happened at 4M objects. But
probably not, even if numerology is about as good a reason as any.
- Linus ]
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: devinfo: Add Microsoft iSCSI target to 1024 sector blacklist
scsi: cxgb4i: silence overflow warning in t4_uld_rx_handler()
scsi: dpt_i2o: Use after free in I2ORESETCMD ioctl
scsi: core: Make scsi_result_to_blk_status() recognize CONDITION MET
scsi: core: Rename __scsi_error_from_host_byte() into scsi_result_to_blk_status()
Revert "scsi: core: return BLK_STS_OK for DID_OK in __scsi_error_from_host_byte()"
scsi: aacraid: Insure command thread is not recursively stopped
scsi: qla2xxx: Correct setting of SAM_STAT_CHECK_CONDITION
scsi: qla2xxx: correctly shift host byte
scsi: qla2xxx: Fix race condition between iocb timeout and initialisation
scsi: qla2xxx: Avoid double completion of abort command
scsi: qla2xxx: Fix small memory leak in qla2x00_probe_one on probe failure
scsi: scsi_dh: Don't look for NULL devices handlers by name
scsi: core: remove redundant assignment to shost->use_blk_mq
Linus Torvalds [Mon, 16 Apr 2018 00:21:30 +0000 (17:21 -0700)]
Merge tag 'kbuild-v4.17-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- pass HOSTLDFLAGS when compiling single .c host programs
- build genksyms lexer and parser files instead of using shipped
versions
- rename *-asn1.[ch] to *.asn1.[ch] for suffix consistency
- let the top .gitignore globally ignore artifacts generated by flex,
bison, and asn1_compiler
- let the top Makefile globally clean artifacts generated by flex,
bison, and asn1_compiler
- use safer .SECONDARY marker instead of .PRECIOUS to prevent
intermediate files from being removed
- support -fmacro-prefix-map option to make __FILE__ a relative path
- fix # escaping to prepare for the future GNU Make release
- clean up deb-pkg by using debian tools instead of handrolled
source/changes generation
- improve rpm-pkg portability by supporting kernel-install as a
fallback of new-kernel-pkg
- extend Kconfig listnewconfig target to provide more information
* tag 'kbuild-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: extend output of 'listnewconfig'
kbuild: rpm-pkg: use kernel-install as a fallback for new-kernel-pkg
Kbuild: fix # escaping in .cmd files for future Make
kbuild: deb-pkg: split generating packaging and build
kbuild: use -fmacro-prefix-map to make __FILE__ a relative path
kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers
kbuild: rename *-asn1.[ch] to *.asn1.[ch]
kbuild: clean up *-asn1.[ch] patterns from top-level Makefile
.gitignore: move *-asn1.[ch] patterns to the top-level .gitignore
kbuild: add %.dtb.S and %.dtb to 'targets' automatically
kbuild: add %.lex.c and %.tab.[ch] to 'targets' automatically
genksyms: generate lexer and parser during build instead of shipping
kbuild: clean up *.lex.c and *.tab.[ch] patterns from top-level Makefile
.gitignore: move *.lex.c *.tab.[ch] patterns to the top-level .gitignore
kbuild: use HOSTLDFLAGS for single .c executables
Linus Torvalds [Sun, 15 Apr 2018 23:12:35 +0000 (16:12 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes and updates for x86:
- Address a swiotlb regression which was caused by the recent DMA
rework and made driver fail because dma_direct_supported() returned
false
- Fix a signedness bug in the APIC ID validation which caused invalid
APIC IDs to be detected as valid thereby bloating the CPU possible
space.
- Fix inconsisten config dependcy/select magic for the MFD_CS5535
driver.
- Fix a corruption of the physical address space bits when encryption
has reduced the address space and late cpuinfo updates overwrite
the reduced bit information with the original value.
- Dominiks syscall rework which consolidates the architecture
specific syscall functions so all syscalls can be wrapped with the
same macros. This allows to switch x86/64 to struct pt_regs based
syscalls. Extend the clearing of user space controlled registers in
the entry patch to the lower registers"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Fix signedness bug in APIC ID validity checks
x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption
x86/olpc: Fix inconsistent MFD_CS5535 configuration
swiotlb: Use dma_direct_supported() for swiotlb_ops
syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention
syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()
syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
syscalls/core, syscalls/x86: Clean up syscall stub naming convention
syscalls/x86: Extend register clearing on syscall entry to lower registers
syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64
syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32
syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls
syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls
syscalls/core: Introduce CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
x86/syscalls: Don't pointlessly reload the system call number
x86/mm: Fix documentation of module mapping range with 4-level paging
x86/cpuid: Switch to 'static const' specifier
Linus Torvalds [Sun, 15 Apr 2018 20:35:29 +0000 (13:35 -0700)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 pti updates from Thomas Gleixner:
"Another series of PTI related changes:
- Remove the manual stack switch for user entries from the idtentry
code. This debloats entry by 5k+ bytes of text.
- Use the proper types for the asm/bootparam.h defines to prevent
user space compile errors.
- Use PAGE_GLOBAL for !PCID systems to gain back performance
- Prevent setting of huge PUD/PMD entries when the entries are not
leaf entries otherwise the entries to which the PUD/PMD points to
and are populated get lost"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pgtable: Don't set huge PUD/PMD on non-leaf entries
x86/pti: Leave kernel text global for !PCID
x86/pti: Never implicitly clear _PAGE_GLOBAL for kernel image
x86/pti: Enable global pages for shared areas
x86/mm: Do not forbid _PAGE_RW before init for __ro_after_init
x86/mm: Comment _PAGE_GLOBAL mystery
x86/mm: Remove extra filtering in pageattr code
x86/mm: Do not auto-massage page protections
x86/espfix: Document use of _PAGE_GLOBAL
x86/mm: Introduce "default" kernel PTE mask
x86/mm: Undo double _PAGE_PSE clearing
x86/mm: Factor out pageattr _PAGE_GLOBAL setting
x86/entry/64: Drop idtentry's manual stack switch for user entries
x86/uapi: Fix asm/bootparam.h userspace compilation errors
Linus Torvalds [Sun, 15 Apr 2018 19:43:30 +0000 (12:43 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"A few scheduler fixes:
- Prevent a bogus warning vs. runqueue clock update flags in
do_sched_rt_period_timer()
- Simplify the helper functions which handle requests for skipping
the runqueue clock updat.
- Do not unlock the tunables mutex in the error path of the cpu
frequency scheduler utils. Its not held.
- Enforce proper alignement for 'struct util_est' in sched_avg to
prevent a misalignment fault on IA64"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Force proper alignment of 'struct util_est'
sched/core: Simplify helpers for rq clock update skip requests
sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning
sched/cpufreq/schedutil: Fix error path mutex unlock
Linus Torvalds [Sun, 15 Apr 2018 19:36:31 +0000 (12:36 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull more perf updates from Thomas Gleixner:
"A rather large set of perf updates:
Kernel:
- Fix various initialization issues
- Prevent creating [ku]probes for not CAP_SYS_ADMIN users
Tooling:
- Show only failing syscalls with 'perf trace --failure' (Arnaldo
Carvalho de Melo)
e.g: See what 'openat' syscalls are failing:
# perf trace --failure -e openat
762.323 ( 0.007 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video2) = -1 ENOENT No such file or directory
<SNIP N /dev/videoN open attempts... sigh, where is that improvised camera lid?!? >
790.228 ( 0.008 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video63) = -1 ENOENT No such file or directory
^C#
- Show information about the event (freq, nr_samples, total
period/nr_events) in the annotate --tui and --stdio2 'perf
annotate' output, similar to the first line in the 'perf report
--tui', but just for the samples for a the annotated symbol
(Arnaldo Carvalho de Melo)
- Introduce 'perf version --build-options' to show what features were
linked, aliased as well as a shorter 'perf -vv' (Jin Yao)
- Add a "dso_size" sort order (Kim Phillips)
- Remove redundant ')' in the tracepoint output in 'perf trace'
(Changbin Du)
- Synchronize x86's cpufeatures.h, no effect on toolss (Arnaldo
Carvalho de Melo)
- Show group details on the title line in the annotate browser and
'perf annotate --stdio2' output, so that the per-event columns can
have headers (Arnaldo Carvalho de Melo)
- Fixup vertical line separating metrics from instructions and
cleaning unused lines at the bottom, both in the annotate TUI
browser (Arnaldo Carvalho de Melo)
- Remove duplicated 'samples' in lost samples warning in
'perf report' (Arnaldo Carvalho de Melo)
- Synchronize i915_drm.h, silencing the perf build process,
automagically adding support for the new DRM_I915_QUERY ioctl
(Arnaldo Carvalho de Melo)
- Make auxtrace_queues__add_buffer() allocate struct buffer, from a
patchkit already applied (Adrian Hunter)
- Fix the --stdio2/TUI annotate output to include group details, be
it for a recorded '{a,b,f}' explicit event group or when forcing
group display using 'perf report --group' for a set of events not
recorded as a group (Arnaldo Carvalho de Melo)
- Fix display artifacts in the ui browser (base class for the
annotate and main report/top TUI browser) related to the extra
title lines work (Arnaldo Carvalho de Melo)
- perf auxtrace refactorings, leftovers from a previously partially
processed patchset (Adrian Hunter)
- Fix the builtin clang build (Sandipan Das, Arnaldo Carvalho de
Melo)
- Synchronize i915_drm.h, silencing a perf build warning and in the
process automagically adding support for a new ioctl command
(Arnaldo Carvalho de Melo)
- Fix a strncpy issue in uprobe tracing"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
perf/core: Need CAP_SYS_ADMIN to create k/uprobe with perf_event_open()
tracing/uprobe_event: Fix strncpy corner case
perf/core: Fix perf_uprobe_init()
perf/core: Fix perf_kprobe_init()
perf/core: Fix use-after-free in uprobe_perf_close()
perf tests clang: Fix function name for clang IR test
perf clang: Add support for recent clang versions
perf tools: Fix perf builds with clang support
perf tools: No need to include namespaces.h in util.h
perf hists browser: Remove leftover from row returned from refresh
perf hists browser: Show extra_title_lines in the 'D' debug hotkey
perf auxtrace: Make auxtrace_queues__add_buffer() do CPU filtering
tools headers uapi: Synchronize i915_drm.h
perf report: Remove duplicated 'samples' in lost samples warning
perf ui browser: Fixup cleaning unused lines at the bottom
perf annotate browser: Fixup vertical line separating metrics from instructions
perf annotate: Show group details on the title line
perf auxtrace: Make auxtrace_queues__add_buffer() allocate struct buffer
perf/x86/intel: Move regs->flags EXACT bit init
perf trace: Remove redundant ')'
...
Linus Torvalds [Sun, 15 Apr 2018 19:32:06 +0000 (12:32 -0700)]
Merge branch 'efi-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 EFI bootup fixlet from Thomas Gleixner:
"A single fix for an early boot warning caused by invoking
this_cpu_has() before SMP initialization"
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Fix bogus warning during EFI bootup, use boot_cpu_has() instead of this_cpu_has() in build_cr3_noflush()
Linus Torvalds [Sun, 15 Apr 2018 19:29:46 +0000 (12:29 -0700)]
Merge branch 'irq-core-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq affinity fixes from Thomas Gleixner:
- Fix error path handling in the affinity spreading code
- Make affinity spreading smarter to avoid issues on systems which
claim to have hotpluggable CPUs while in fact they can't hotplug
anything.
So instead of trying to spread the vectors (and thereby the
associated device queues) to all possibe CPUs, spread them on all
present CPUs first. If there are left over vectors after that first
step they are spread among the possible, but not present CPUs which
keeps the code backwards compatible for virtual decives and NVME
which allocate a queue per possible CPU, but makes the spreading
smarter for devices which have less queues than possible or present
CPUs.
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Spread irq vectors among present CPUs as far as possible
genirq/affinity: Allow irq spreading from a given starting point
genirq/affinity: Move actual irq vector spreading into a helper function
genirq/affinity: Rename *node_to_possible_cpumask as *node_to_cpumask
genirq/affinity: Don't return with empty affinity masks on error
Linus Torvalds [Sun, 15 Apr 2018 19:27:58 +0000 (12:27 -0700)]
Merge tag 'for-linus' of git://github.com/openrisc/linux
Pull OpenRISC fixlet from Stafford Horne:
"Just one small thing here, it came in a while back but I didnt have
anything in my 4.16 queue, still its the only thing for 4.17 so
sending it alone.
Small cleanup: remove unused __ARCH_HAVE_MMU define"
* tag 'for-linus' of git://github.com/openrisc/linux:
openrisc: remove unused __ARCH_HAVE_MMU define
Linus Torvalds [Sun, 15 Apr 2018 18:57:12 +0000 (11:57 -0700)]
Merge tag 'powerpc-4.17-2' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix crashes when loading modules built with a different
CONFIG_RELOCATABLE value by adding CONFIG_RELOCATABLE to vermagic.
- Fix busy loops in the OPAL NVRAM driver if we get certain error
conditions from firmware.
- Remove tlbie trace points from KVM code that's called in real mode,
because it causes crashes.
- Fix checkstops caused by invalid tlbiel on Power9 Radix.
- Ensure the set of CPU features we "know" are always enabled is
actually the minimal set when we build with support for firmware
supplied CPU features.
Thanks to: Aneesh Kumar K.V, Anshuman Khandual, Nicholas Piggin.
* tag 'powerpc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Fix CPU_FTRS_ALWAYS vs DT CPU features
powerpc/mm/radix: Fix checkstops caused by invalid tlbiel
KVM: PPC: Book3S HV: trace_tlbie must not be called in realmode
powerpc/8xx: Fix build with hugetlbfs enabled
powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops
powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops
powerpc/fscr: Enable interrupts earlier before calling get_user()
powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
powerpc/modules: Fix crashes by adding CONFIG_RELOCATABLE to vermagic
Linus Torvalds [Sat, 14 Apr 2018 15:50:50 +0000 (08:50 -0700)]
Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton:
- various hotfixes
- kexec_file updates and feature work
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (27 commits)
kernel/kexec_file.c: move purgatories sha256 to common code
kernel/kexec_file.c: allow archs to set purgatory load address
kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory load
kernel/kexec_file.c: remove unneeded variables in kexec_purgatory_setup_sechdrs
kernel/kexec_file.c: remove unneeded for-loop in kexec_purgatory_setup_sechdrs
kernel/kexec_file.c: split up __kexec_load_puragory
kernel/kexec_file.c: use read-only sections in arch_kexec_apply_relocations*
kernel/kexec_file.c: search symbols in read-only kexec_purgatory
kernel/kexec_file.c: make purgatory_info->ehdr const
kernel/kexec_file.c: remove checks in kexec_purgatory_load
include/linux/kexec.h: silence compile warnings
kexec_file, x86: move re-factored code to generic side
x86: kexec_file: clean up prepare_elf64_headers()
x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer
x86: kexec_file: remove X86_64 dependency from prepare_elf64_headers()
x86: kexec_file: purge system-ram walking from prepare_elf64_headers()
kexec_file,x86,powerpc: factor out kexec_file_ops functions
kexec_file: make use of purgatory optional
proc: revalidate misc dentries
mm, slab: reschedule cache_reap() on the same CPU
...
Philipp Rudo [Fri, 13 Apr 2018 22:36:46 +0000 (15:36 -0700)]
kernel/kexec_file.c: move purgatories sha256 to common code
The code to verify the new kernels sha digest is applicable for all
architectures. Move it to common code.
One problem is the string.c implementation on x86. Currently sha256
includes x86/boot/string.h which defines memcpy and memset to be gcc
builtins. By moving the sha256 implementation to common code and
changing the include to linux/string.h both functions are no longer
defined. Thus definitions have to be provided in x86/purgatory/string.c
Link: http://lkml.kernel.org/r/20180321112751.22196-12-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:43 +0000 (15:36 -0700)]
kernel/kexec_file.c: allow archs to set purgatory load address
For s390 new kernels are loaded to fixed addresses in memory before they
are booted. With the current code this is a problem as it assumes the
kernel will be loaded to an 'arbitrary' address. In particular,
kexec_locate_mem_hole searches for a large enough memory region and sets
the load address (kexec_bufer->mem) to it.
Luckily there is a simple workaround for this problem. By returning 1
in arch_kexec_walk_mem, kexec_locate_mem_hole is turned off. This
allows the architecture to set kbuf->mem by hand. While the trick works
fine for the kernel it does not for the purgatory as here the
architectures don't have access to its kexec_buffer.
Give architectures access to the purgatories kexec_buffer by changing
kexec_load_purgatory to take a pointer to it. With this change
architectures have access to the buffer and can edit it as they need.
A nice side effect of this change is that we can get rid of the
purgatory_info->purgatory_load_address field. As now the information
stored there can directly be accessed from kbuf->mem.
Link: http://lkml.kernel.org/r/20180321112751.22196-11-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:39 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory load
The current code uses the sh_offset field in purgatory_info->sechdrs to
store a pointer to the current load address of the section. Depending
whether the section will be loaded or not this is either a pointer into
purgatory_info->purgatory_buf or kexec_purgatory. This is not only a
violation of the ELF standard but also makes the code very hard to
understand as you cannot tell if the memory you are using is read-only
or not.
Remove this misuse and store the offset of the section in
pugaroty_info->purgatory_buf in sh_offset.
Link: http://lkml.kernel.org/r/20180321112751.22196-10-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:35 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove unneeded variables in kexec_purgatory_setup_sechdrs
The main loop currently uses quite a lot of variables to update the
section headers. Some of them are unnecessary. So clean them up a
little.
Link: http://lkml.kernel.org/r/20180321112751.22196-9-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:32 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove unneeded for-loop in kexec_purgatory_setup_sechdrs
To update the entry point there is an extra loop over all section
headers although this can be done in the main loop. So move it there
and eliminate the extra loop and variable to store the 'entry section
index'.
Also, in the main loop, move the usual case, i.e. non-bss section, out
of the extra if-block.
Link: http://lkml.kernel.org/r/20180321112751.22196-8-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:28 +0000 (15:36 -0700)]
kernel/kexec_file.c: split up __kexec_load_puragory
When inspecting __kexec_load_purgatory you find that it has two tasks
1) setting up the kexec_buffer for the new kernel and,
2) setting up pi->sechdrs for the final load address.
The two tasks are independent of each other. To improve readability
split up __kexec_load_purgatory into two functions, one for each task,
and call them directly from kexec_load_purgatory.
Link: http://lkml.kernel.org/r/20180321112751.22196-7-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:24 +0000 (15:36 -0700)]
kernel/kexec_file.c: use read-only sections in arch_kexec_apply_relocations*
When the relocations are applied to the purgatory only the section the
relocations are applied to is writable. The other sections, i.e. the
symtab and .rel/.rela, are in read-only kexec_purgatory. Highlight this
by marking the corresponding variables as 'const'.
While at it also change the signatures of arch_kexec_apply_relocations* to
take section pointers instead of just the index of the relocation section.
This removes the second lookup and sanity check of the sections in arch
code.
Link: http://lkml.kernel.org/r/20180321112751.22196-6-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:21 +0000 (15:36 -0700)]
kernel/kexec_file.c: search symbols in read-only kexec_purgatory
The stripped purgatory does not contain a symtab. So when looking for
symbols this is done in read-only kexec_purgatory. Highlight this by
marking the corresponding variables as 'const'.
Link: http://lkml.kernel.org/r/20180321112751.22196-5-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:17 +0000 (15:36 -0700)]
kernel/kexec_file.c: make purgatory_info->ehdr const
The kexec_purgatory buffer is read-only. Thus all pointers into
kexec_purgatory are read-only, too. Point this out by explicitly
marking purgatory_info->ehdr as 'const' and update the comments in
purgatory_info.
Link: http://lkml.kernel.org/r/20180321112751.22196-4-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:13 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove checks in kexec_purgatory_load
Before the purgatory is loaded several checks are done whether the ELF
file in kexec_purgatory is valid or not. These checks are incomplete.
For example they don't check for the total size of the sections defined
in the section header table or if the entry point actually points into
the purgatory.
On the other hand the purgatory, although an ELF file on its own, is
part of the kernel. Thus not trusting the purgatory means not trusting
the kernel build itself.
So remove all validity checks on the purgatory and just trust the kernel
build.
Link: http://lkml.kernel.org/r/20180321112751.22196-3-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:10 +0000 (15:36 -0700)]
include/linux/kexec.h: silence compile warnings
Patch series "kexec_file: Clean up purgatory load", v2.
Following the discussion with Dave and AKASHI, here are the common code
patches extracted from my recent patch set (Add kexec_file_load support
to s390) [1]. The patches were extracted to allow upstream integration
together with AKASHI's common code patches before the arch code gets
adjusted to the new base.
The reason for this series is to prepare common code for adding
kexec_file_load to s390 as well as cleaning up the mis-use of the
sh_offset field during purgatory load. In detail this series contains:
Patch #1&2: Minor cleanups/fixes.
Patch #3-9: Clean up the purgatory load/relocation code. Especially
remove the mis-use of the purgatory_info->sechdrs->sh_offset field,
currently holding a pointer into either kexec_purgatory (ro) or
purgatory_buf (rw) depending on the section. With these patches the
section address will be calculated verbosely and sh_offset will contain
the offset of the section in the stripped purgatory binary
(purgatory_buf).
Patch #10: Allows architectures to set the purgatory load address. This
patch is important for s390 as the kernel and purgatory have to be
loaded to fixed addresses. In current code this is impossible as the
purgatory load is opaque to the architecture.
Patch #11: Moves x86 purgatories sha implementation to common lib/
directory to allow reuse in other architectures.
This patch (of 11)
When building the kernel with CONFIG_KEXEC_FILE enabled gcc prints a
compile warning multiple times.
In file included from <path>/linux/init/initramfs.c:526:0:
<path>/include/linux/kexec.h:120:9: warning: `struct kimage' declared inside parameter list [enabled by default]
unsigned long cmdline_len);
^
This is because the typedefs for kexec_file_load uses struct kimage
before it is declared. Fix this by simply forward declaring struct
kimage.
Link: http://lkml.kernel.org/r/20180321112751.22196-2-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:36:06 +0000 (15:36 -0700)]
kexec_file, x86: move re-factored code to generic side
In the previous patches, commonly-used routines, exclude_mem_range() and
prepare_elf64_headers(), were carved out. Now place them in kexec
common code. A prefix "crash_" is given to each of their names to avoid
possible name collisions.
Link: http://lkml.kernel.org/r/20180306102303.9063-8-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:36:03 +0000 (15:36 -0700)]
x86: kexec_file: clean up prepare_elf64_headers()
Removing bufp variable in prepare_elf64_headers() makes the code simpler
and more understandable.
Link: http://lkml.kernel.org/r/20180306102303.9063-7-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:59 +0000 (15:35 -0700)]
x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer
While CRASH_MAX_RANGES (== 16) seems to be good enough, fixed-number
array is not a good idea in general.
In this patch, size of crash_mem buffer is calculated as before and the
buffer is now dynamically allocated. This change also allows removing
crash_elf_data structure.
Link: http://lkml.kernel.org/r/20180306102303.9063-6-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:56 +0000 (15:35 -0700)]
x86: kexec_file: remove X86_64 dependency from prepare_elf64_headers()
The code guarded by CONFIG_X86_64 is necessary on some architectures
which have a dedicated kernel mapping outside of linear memory mapping.
(arm64 is among those.)
In this patch, an additional argument, kernel_map, is added to enable/
disable the code removing #ifdef.
Link: http://lkml.kernel.org/r/20180306102303.9063-5-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:53 +0000 (15:35 -0700)]
x86: kexec_file: purge system-ram walking from prepare_elf64_headers()
While prepare_elf64_headers() in x86 looks pretty generic for other
architectures' use, it contains some code which tries to list crash
memory regions by walking through system resources, which is not always
architecture agnostic. To make this function more generic, the related
code should be purged.
In this patch, prepare_elf64_headers() simply scans crash_mem buffer
passed and add all the listed regions to elf header as a PT_LOAD
segment. So walk_system_ram_res(prepare_elf64_headers_callback) have
been moved forward before prepare_elf64_headers() where the callback,
prepare_elf64_headers_callback(), is now responsible for filling up
crash_mem buffer.
Meanwhile exclude_elf_header_ranges() used to be called every time in
this callback it is rather redundant and now called only once in
prepare_elf_headers() as well.
Link: http://lkml.kernel.org/r/20180306102303.9063-4-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:49 +0000 (15:35 -0700)]
kexec_file,x86,powerpc: factor out kexec_file_ops functions
As arch_kexec_kernel_image_{probe,load}(),
arch_kimage_file_post_load_cleanup() and arch_kexec_kernel_verify_sig()
are almost duplicated among architectures, they can be commonalized with
an architecture-defined kexec_file_ops array. So let's factor them out.
Link: http://lkml.kernel.org/r/20180306102303.9063-3-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:45 +0000 (15:35 -0700)]
kexec_file: make use of purgatory optional
Patch series "kexec_file, x86, powerpc: refactoring for other
architecutres", v2.
This is a preparatory patchset for adding kexec_file support on arm64.
It was originally included in a arm64 patch set[1], but Philipp is also
working on their kexec_file support on s390[2] and some changes are now
conflicting.
So these common parts were extracted and put into a separate patch set
for better integration. What's more, my original patch#4 was split into
a few small chunks for easier review after Dave's comment.
As such, the resulting code is basically identical with my original, and
the only *visible* differences are:
- renaming of _kexec_kernel_image_probe() and _kimage_file_post_load_cleanup()
- change one of types of arguments at prepare_elf64_headers()
Those, unfortunately, require a couple of trivial changes on the rest
(#1, #6 to #13) of my arm64 kexec_file patch set[1].
Patch #1 allows making a use of purgatory optional, particularly useful
for arm64.
Patch #2 commonalizes arch_kexec_kernel_{image_probe, image_load,
verify_sig}() and arch_kimage_file_post_load_cleanup() across
architectures.
Patches #3-#7 are also intended to generalize parse_elf64_headers(),
along with exclude_mem_range(), to be made best re-use of.
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-February/561182.html
[2] http://lkml.iu.edu//hypermail/linux/kernel/1802.1/02596.html
This patch (of 7):
On arm64, crash dump kernel's usable memory is protected by *unmapping*
it from kernel virtual space unlike other architectures where the region
is just made read-only. It is highly unlikely that the region is
accidentally corrupted and this observation rationalizes that digest
check code can also be dropped from purgatory. The resulting code is so
simple as it doesn't require a bit ugly re-linking/relocation stuff,
i.e. arch_kexec_apply_relocations_add().
Please see:
http://lists.infradead.org/pipermail/linux-arm-kernel/2017-December/545428.html
All that the purgatory does is to shuffle arguments and jump into a new
kernel, while we still need to have some space for a hash value
(purgatory_sha256_digest) which is never checked against.
As such, it doesn't make sense to have trampline code between old kernel
and new kernel on arm64.
This patch introduces a new configuration, ARCH_HAS_KEXEC_PURGATORY, and
allows related code to be compiled in only if necessary.
[takahiro.akashi@linaro.org: fix trivial screwup]
Link: http://lkml.kernel.org/r/20180309093346.GF25863@linaro.org
Link: http://lkml.kernel.org/r/20180306102303.9063-2-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexey Dobriyan [Fri, 13 Apr 2018 22:35:42 +0000 (15:35 -0700)]
proc: revalidate misc dentries
If module removes proc directory while another process pins it by
chdir'ing to it, then subsequent recreation of proc entry and all
entries down the tree will not be visible to any process until pinning
process unchdir from directory and unpins everything.
Steps to reproduce:
proc_mkdir("aaa", NULL);
proc_create("aaa/bbb", ...);
chdir("/proc/aaa");
remove_proc_entry("aaa/bbb", NULL);
remove_proc_entry("aaa", NULL);
proc_mkdir("aaa", NULL);
# inaccessible because "aaa" dentry still points
# to the original "aaa".
proc_create("aaa/bbb", ...);
Fix is to implement ->d_revalidate and ->d_delete.
Link: http://lkml.kernel.org/r/20180312201938.GA4871@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlastimil Babka [Fri, 13 Apr 2018 22:35:38 +0000 (15:35 -0700)]
mm, slab: reschedule cache_reap() on the same CPU
cache_reap() is initially scheduled in start_cpu_timer() via
schedule_delayed_work_on(). But then the next iterations are scheduled
via schedule_delayed_work(), i.e. using WORK_CPU_UNBOUND.
Thus since commit
ef557180447f ("workqueue: schedule WORK_CPU_UNBOUND
work on wq_unbound_cpumask CPUs") there is no guarantee the future
iterations will run on the originally intended cpu, although it's still
preferred. I was able to demonstrate this with
/sys/module/workqueue/parameters/debug_force_rr_cpu. IIUC, it may also
happen due to migrating timers in nohz context. As a result, some cpu's
would be calling cache_reap() more frequently and others never.
This patch uses schedule_delayed_work_on() with the current cpu when
scheduling the next iteration.
Link: http://lkml.kernel.org/r/20180411070007.32225-1-vbabka@suse.cz
Fixes: ef557180447f ("workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs")
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Petr Tesarik [Fri, 13 Apr 2018 22:35:34 +0000 (15:35 -0700)]
kexec: export PG_swapbacked to VMCOREINFO
Since commit
6326fec1122c ("mm: Use owner_priv bit for PageSwapCache,
valid when PageSwapBacked"), PG_swapcache is an alias for
PG_owner_priv_1, which may be also used for other purposes.
To know whether the bit indeed has the PG_swapcache meaning, it is
necessary to check PG_swapbacked, hence this bit must be exported.
Link: http://lkml.kernel.org/r/20180410161345.142e142d@ezekiel.suse.cz
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Xunlei Pang <xlpang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Hari Bathini <hbathini@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: "Marc-Andr Lureau" <marcandre.lureau@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / platform / kernel / linux-rpi.git / log