platform/kernel/linux-rpi.git
4 years agoregulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone
Axel Lin [Sun, 29 Sep 2019 09:58:48 +0000 (17:58 +0800)]
regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone

ti_abb_wait_txdone() may return -ETIMEDOUT when ti_abb_check_txdone()
returns true in the latest iteration of the while loop because the timeout
value is abb->settling_time + 1. Similarly, ti_abb_clear_all_txdone() may
return -ETIMEDOUT when ti_abb_check_txdone() returns false in the latest
iteration of the while loop. Fix it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20190929095848.21960-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: da9062: fix suspend_enable/disable preparation
Marco Felsch [Tue, 17 Sep 2019 12:42:42 +0000 (14:42 +0200)]
regulator: da9062: fix suspend_enable/disable preparation

Currently the suspend reg_field maps to the pmic voltage selection bits
and is used during suspend_enabe/disable() and during get_mode(). This
seems to be wrong for both use cases.

Use case one (suspend_enabe/disable):
Those callbacks are used to mark a regulator device as enabled/disabled
during suspend. Marking the regulator enabled during suspend is done by
the LDOx_CONF/BUCKx_CONF bit within the LDOx_CONT/BUCKx_CONT registers.
Setting this bit tells the DA9062 PMIC state machine to keep the
regulator on in POWERDOWN mode and switch to suspend voltage.

Use case two (get_mode):
The get_mode callback is used to retrieve the active mode state. Since
the regulator-setting-A is used for the active state and
regulator-setting-B for the suspend state there is no need to check
which regulator setting is active.

Fixes: 4068e5182ada ("regulator: da9062: DA9062 regulator driver")
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/20190917124246.11732-2-m.felsch@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agodt-bindings: fixed-regulator: fix compatible enum
Philippe Schenker [Mon, 23 Sep 2019 08:18:49 +0000 (08:18 +0000)]
dt-bindings: fixed-regulator: fix compatible enum

Remove 'const:' in the compatible enum. This was breaking
make dt_binding_check since it has more than one compatible string.

Fixes: 9c86d003d620 ("dt-bindings: regulator: add regulator-fixed-clock binding")
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Link: https://lore.kernel.org/r/20190923081840.23391-1-philippe.schenker@toradex.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF
Axel Lin [Sun, 22 Sep 2019 02:29:28 +0000 (10:29 +0800)]
regulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF

Use of_device_get_match_data which has NULL test for match before
dereference match->data. Add NULL test for drvtype so it still works
for fixed_voltage_ops when !CONFIG_OF.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com>
Link: https://lore.kernel.org/r/20190922022928.28355-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: core: make regulator_register() EPROBE_DEFER aware
Marco Felsch [Tue, 17 Sep 2019 15:40:21 +0000 (17:40 +0200)]
regulator: core: make regulator_register() EPROBE_DEFER aware

Sometimes it can happen that the regulator_of_get_init_data() can't
retrieve the config due to a not probed device the regulator depends on.
Fix that by checking the return value of of_parse_cb() and return
EPROBE_DEFER in such cases.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Link: https://lore.kernel.org/r/20190917154021.14693-4-m.felsch@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: of: fix suspend-min/max-voltage parsing
Marco Felsch [Tue, 17 Sep 2019 15:40:20 +0000 (17:40 +0200)]
regulator: of: fix suspend-min/max-voltage parsing

Currently the regulator-suspend-min/max-microvolt must be within the
root regulator node but the dt-bindings specifies it as subnode
properties for the regulator-state-[mem/disk/standby] node. The only DT
using this bindings currently is the at91-sama5d2_xplained.dts and this
DT uses it correctly. I don't know if it isn't tested but it can't work
without this fix.

Fixes: f7efad10b5c4 ("regulator: add PM suspend and resume hooks")
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Link: https://lore.kernel.org/r/20190917154021.14693-3-m.felsch@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: core: Fix error return for /sys access
H. Nikolaus Schaller [Tue, 10 Sep 2019 19:22:29 +0000 (21:22 +0200)]
regulator: core: Fix error return for /sys access

regulator_uV_show() is missing error handling if regulator_get_voltage_rdev()
returns negative values. Instead it prints the errno as a string, e.g. -EINVAL
as "-22" which could be interpreted as -22 µV.

We also do not need to hold the lock while converting the integer to a string.

Reported-by: Adam Ford <aford173@gmail.com>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Tested-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/f37f2a1276efcb34cf3b7f1a25481175be048806.1568143348.git.hns@goldelico.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: da9211: fix obtaining "enable" GPIO
Dmitry Torokhov [Tue, 10 Sep 2019 17:02:46 +0000 (10:02 -0700)]
regulator: da9211: fix obtaining "enable" GPIO

This fixes 11da04af0d3b, as devm_gpiod_get_from_of_node() does
not do translation "con-id" -> "con-id-gpios" that our bindings expects,
and therefore it was wrong to change connection ID to be simply "enable"
when moving to using devm_gpiod_get_from_of_node().

Fixes: 11da04af0d3b ("regulator: da9211: Pass descriptors instead of GPIO numbers")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20190910170246.GA56792@dtor-ws
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: max77686: fix obtaining "maxim,ena" GPIO
Dmitry Torokhov [Tue, 10 Sep 2019 17:00:50 +0000 (10:00 -0700)]
regulator: max77686: fix obtaining "maxim,ena" GPIO

This fixes 96392c3d8ca4, as devm_gpiod_get_from_of_node() does
not do translation "con-id" -> "con-id-gpios" that our bindings expects,
and therefore it was wrong to change connection ID to be simply
"maxim,ena" when moving to using devm_gpiod_get_from_of_node().

Fixes: 96392c3d8ca4 ("regulator: max77686: Pass descriptor instead of GPIO number")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20190910170050.GA55530@dtor-ws
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: uniphier: Add Pro5 USB3 VBUS support
Kunihiko Hayashi [Tue, 10 Sep 2019 01:51:44 +0000 (10:51 +0900)]
regulator: uniphier: Add Pro5 USB3 VBUS support

Pro5 SoC has same scheme of USB3 VBUS as Pro4, so the data for Pro5 is
equivalent to Pro4.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1568080304-1572-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agodt-bindings: regulator: add regulator-fixed-clock binding
Philippe Schenker [Tue, 10 Sep 2019 06:21:19 +0000 (06:21 +0000)]
dt-bindings: regulator: add regulator-fixed-clock binding

This adds the documentation to the compatible regulator-fixed-clock.
This binding is a special binding of regulator-fixed and adds the
ability to add a clock to regulator-fixed, so the regulator can be
enabled and disabled with that clock. If the special compatible
regulator-fixed-clock is used it is mandatory to supply a clock.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20190910062103.39641-4-philippe.schenker@toradex.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: fixed: add possibility to enable by clock
Philippe Schenker [Tue, 10 Sep 2019 06:21:15 +0000 (06:21 +0000)]
regulator: fixed: add possibility to enable by clock

This commit adds the possibility to choose the compatible
"regulator-fixed-clock" in devicetree.

This is a special regulator-fixed that has to have a clock, from which
the regulator gets switched on and off.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Link: https://lore.kernel.org/r/20190910062103.39641-2-philippe.schenker@toradex.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: s2mps11: Consistently use local variable
Krzysztof Kozlowski [Mon, 9 Sep 2019 15:57:23 +0000 (17:57 +0200)]
regulator: s2mps11: Consistently use local variable

The value under 's2mps11->ext_control_gpiod[i]' is assigned to local
variable and used in probe in one place before.  Use it consistently
later so code will be easier to read.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20190909155723.24734-1-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: lp87565: Simplify lp87565_buck_set_ramp_delay
Axel Lin [Sun, 8 Sep 2019 03:57:20 +0000 (11:57 +0800)]
regulator: lp87565: Simplify lp87565_buck_set_ramp_delay

Use rdev->regmap/&rdev->dev instead of lp87565->regmap/lp87565->dev.
In additional, the lp87565->dev actually is the parent mfd device,
so the dev_err message is misleading here with lp87565->dev.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190908035720.17748-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: slg51000: use devm_gpiod_get_optional() in probe
Dmitry Torokhov [Wed, 4 Sep 2019 21:42:00 +0000 (14:42 -0700)]
regulator: slg51000: use devm_gpiod_get_optional() in probe

The CS GPIO line is clearly optional GPIO (and marked as such in the
binding document) and we should handle it accordingly. The current code
treats all errors as meaning that there is no GPIO defined, which is
wrong, as it does not handle deferrals raised by the underlying code
properly, nor does it recognize non-existing GPIO from any other
initialization error.

As far as I can see the only reason the driver, unlike all others,
is using OF-specific devm_gpiod_get_from_of_node() so that it can
assign a custom label to the selected GPIO line. Given that noone else
needs that, it should not be doing that either.

Let's switch to using more appropriate devm_gpiod_get_optional().

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20190904214200.GA66118@dtor-ws
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoMerge branch 'regulator-5.3' into regulator-5.4
Mark Brown [Mon, 9 Sep 2019 09:56:10 +0000 (10:56 +0100)]
Merge branch 'regulator-5.3' into regulator-5.4

4 years agoregulator: lp8788-ldo: make array en_mask static const, makes object smaller
Colin Ian King [Fri, 6 Sep 2019 13:06:32 +0000 (14:06 +0100)]
regulator: lp8788-ldo: make array en_mask static const, makes object smaller

Don't populate the array en_mask on the stack but instead make it
static const. Makes the object code smaller by 87 bytes.

Before:
   text    data     bss     dec     hex filename
  12967    3408       0   16375    3ff7 drivers/regulator/lp8788-ldo.o

After:
   text    data     bss     dec     hex filename
  12816    3472       0   16288    3fa0 drivers/regulator/lp8788-ldo.o

(gcc version 9.2.1, amd64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190906130632.6709-1-colin.king@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: tps65132: Stop parsing DT when gpio is not found
Guido Günther [Wed, 4 Sep 2019 19:35:00 +0000 (12:35 -0700)]
regulator: tps65132: Stop parsing DT when gpio is not found

In case of a missing (optional) gpio don't fall through up to
"ti,active-discharge-time-us" due to
devm_fwnode_get_index_gpiod_from_child() returning NULL (since
gpiod_get_from_of_node() returned NULL) but rather indicate success as
intended.

This makes the driver probe correctly when e.g. only the enable gpio is
given.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Link: https://lore.kernel.org/r/363bd50cc7c60daa57d614a341d1fd649f05194c.1567625660.git.agx@sigxcpu.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: Defer init completion for a while after late_initcall
Mark Brown [Wed, 4 Sep 2019 12:42:50 +0000 (13:42 +0100)]
regulator: Defer init completion for a while after late_initcall

The kernel has no way of knowing when we have finished instantiating
drivers, between deferred probe and systems that build key drivers as
modules we might be doing this long after userspace has booted. This has
always been a bit of an issue with regulator_init_complete since it can
power off hardware that's not had it's driver loaded which can result in
user visible effects, the main case is powering off displays. Practically
speaking it's not been an issue in real systems since most systems that
use the regulator API are embedded and build in key drivers anyway but
with Arm laptops coming on the market it's becoming more of an issue so
let's do something about it.

In the absence of any better idea just defer the powering off for 30s
after late_initcall(), this is obviously a hack but it should mask the
issue for now and it's no more arbitrary than late_initcall() itself.
Ideally we'd have some heuristics to detect if we're on an affected
system and tune or skip the delay appropriately, and there may be some
need for a command line option to be added.

Link: https://lore.kernel.org/r/20190904124250.25844-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Tested-by: Lee Jones <lee.jones@linaro.org>
Cc: stable@vger.kernel.org
4 years agoregulator: add missing 'static inline' to a helper's stub
Bartosz Golaszewski [Mon, 2 Sep 2019 15:13:32 +0000 (17:13 +0200)]
regulator: add missing 'static inline' to a helper's stub

The build fails when CONFIG_REGULATOR is not selected because the stub
for regulator_bulk_set_supply_names() is missing the 'static inline'
attribute.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20190902151332.28058-1-brgl@bgdev.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: provide regulator_bulk_set_supply_names()
Bartosz Golaszewski [Fri, 30 Aug 2019 07:17:37 +0000 (09:17 +0200)]
regulator: provide regulator_bulk_set_supply_names()

There are many regulator consumers who - before using the regulator
bulk functions - set the supply names in regulator_bulk_data using
a for loop.

Let's provide a simple helper in the consumer API that allows users
to do the same with a single function call.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20190830071740.4267-2-brgl@bgdev.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoMAINTAINERS: Add keyword pattern on regulator_get_optional()
Mark Brown [Thu, 29 Aug 2019 12:54:35 +0000 (13:54 +0100)]
MAINTAINERS: Add keyword pattern on regulator_get_optional()

In an effort to try to contain abuses of regulator_get_optional() add a
keyword entry to the MAINTAINERS stanza for the regulator API so that the
regulator maintainers get CCed on new usages.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20190829125435.48770-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: sy8824x: add prefixes to BUCK_EN and MODE macros
Jisheng Zhang [Thu, 29 Aug 2019 06:50:46 +0000 (06:50 +0000)]
regulator: sy8824x: add prefixes to BUCK_EN and MODE macros

Add prefixes to BUCK_EN and MODE macros to namespace them.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190829143927.395d0385@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: sy8824x: use c++style for the comment block near SPDX
Jisheng Zhang [Thu, 29 Aug 2019 06:49:18 +0000 (06:49 +0000)]
regulator: sy8824x: use c++style for the comment block near SPDX

Update the entire comment block to be C++ style so it looks consistent.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190829143749.4b42bc65@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: mt6358: Add BROKEN dependency while waiting for MFD to merge
Mark Brown [Fri, 30 Aug 2019 11:29:22 +0000 (12:29 +0100)]
regulator: mt6358: Add BROKEN dependency while waiting for MFD to merge

The mt6358 driver was merged in error, it depends on an existing MFD
rather than a newly added one and needs updates to that driver.  Disable
the build until those are merged.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: mt6358: Add support for MT6358 regulator
Hsin-Hsiung Wang [Fri, 23 Aug 2019 03:45:28 +0000 (11:45 +0800)]
regulator: mt6358: Add support for MT6358 regulator

The MT6358 is a regulator found on boards based on MediaTek MT8183 and
probably other SoCs. It is a so called pmic and connects as a slave to
SoC using SPI, wrapped inside the pmic-wrapper.

Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1566531931-9772-8-git-send-email-hsin-hsiung.wang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: Add document for MT6358 regulator
Hsin-Hsiung Wang [Fri, 23 Aug 2019 03:45:26 +0000 (11:45 +0800)]
regulator: Add document for MT6358 regulator

add dt-binding document for MediaTek MT6358 PMIC

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>
Link: https://lore.kernel.org/r/1566531931-9772-6-git-send-email-hsin-hsiung.wang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: sy8824x: add SY20278 support
Jisheng Zhang [Tue, 27 Aug 2019 08:49:45 +0000 (08:49 +0000)]
regulator: sy8824x: add SY20278 support

The differences between SY8824C and SY20278 are different regs
for mode/enable.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163830.2c94f29b@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agodt-bindings: sy8824x: Document SY20278 support
Jisheng Zhang [Tue, 27 Aug 2019 08:49:09 +0000 (08:49 +0000)]
dt-bindings: sy8824x: Document SY20278 support

SY20276 is an I2C-controlled adjustable voltage regulator made by
Silergy Corp. The differences between SY8824C and SY20278 are
different regs for mode/enable.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163754.170cf130@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: sy8824x: add SY20276 support
Jisheng Zhang [Tue, 27 Aug 2019 08:48:36 +0000 (08:48 +0000)]
regulator: sy8824x: add SY20276 support

The differences between SY8824C and SY20276 are different vsel_min,
vsel_step, vsel_count and regs for mode/enable.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163721.1947f7a0@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agodt-bindings: sy8824x: Document SY20276 support
Jisheng Zhang [Tue, 27 Aug 2019 08:48:04 +0000 (08:48 +0000)]
dt-bindings: sy8824x: Document SY20276 support

SY20276 is an I2C-controlled adjustable voltage regulator made by
Silergy Corp. The differences between SY8824C and SY20276 are
different vsel_min, vsel_step, vsel_count and regs for mode/enable.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163650.47ed1213@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: sy8824x: add SY8824E support
Jisheng Zhang [Tue, 27 Aug 2019 08:47:30 +0000 (08:47 +0000)]
regulator: sy8824x: add SY8824E support

The only difference between SY8824E and SY8824C/D is the vsel_min.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163537.52023c4e@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agodt-bindings: sy8824x: Document SY8824E support
Jisheng Zhang [Tue, 27 Aug 2019 08:46:21 +0000 (08:46 +0000)]
dt-bindings: sy8824x: Document SY8824E support

SY8824E is an I2C-controlled adjustable voltage regulator made by
Silergy Corp. The only difference between SY8824C and SY8824E is the
vsel_min.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163505.361890af@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: add support for SY8824C regulator
Jisheng Zhang [Tue, 27 Aug 2019 08:45:33 +0000 (08:45 +0000)]
regulator: add support for SY8824C regulator

SY8824C is an I2C attached single output regulator made by Silergy Corp,
which is used on several Synaptics berlin platforms to control the
power supply of the ARM cores.

Add a driver for it.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163418.1a32fc48@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: add binding for the SY8824C voltage regulator
Jisheng Zhang [Tue, 27 Aug 2019 08:45:00 +0000 (08:45 +0000)]
regulator: add binding for the SY8824C voltage regulator

SY8824C is an I2C-controlled adjustable voltage regulator made by
Silergy Corp.

Add its device tree binding.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20190827163341.61df63a7@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: act8865: operating mode and suspend state support
Raag Jadav [Tue, 13 Aug 2019 18:32:55 +0000 (00:02 +0530)]
regulator: act8865: operating mode and suspend state support

Implement ->set_mode(), ->get_mode() and ->set_suspend_xx() hooks
for act8865 with unlocked expert registers.

Based on work done by Borris Brezillon on [1].
[1] https://www.spinics.net/lists/kernel/msg2942960.html

Signed-off-by: Raag Jadav <raagjadav@gmail.com>
Link: https://lore.kernel.org/r/1565721176-8955-2-git-send-email-raagjadav@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: core: Add label to collate of_node_put() statements
Nishka Dasgupta [Thu, 15 Aug 2019 05:37:04 +0000 (11:07 +0530)]
regulator: core: Add label to collate of_node_put() statements

In function of_get_child_regulator(), the loop for_each_child_of_node()
contains two mid-loop return statements, each preceded by a statement
putting child. In order to reduce this repetition, create a new label,
err_node_put, that puts child and then returns the required value;
edit the mid-loop return blocks to instead go to this new label.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190815053704.32156-1-nishkadg.linux@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: act8865 regulator modes and suspend states
Raag Jadav [Tue, 13 Aug 2019 18:32:56 +0000 (00:02 +0530)]
regulator: act8865 regulator modes and suspend states

Add documentation for act8865 regulator modes and suspend states.
Add active-semi,8865-regulator.h file for device tree binding constants
for act8865 regulators.

Signed-off-by: Raag Jadav <raagjadav@gmail.com>
Link: https://lore.kernel.org/r/1565721176-8955-3-git-send-email-raagjadav@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: max8660: remove redundant assignment of variable ret
Colin Ian King [Tue, 13 Aug 2019 13:31:14 +0000 (14:31 +0100)]
regulator: max8660: remove redundant assignment of variable ret

Variable ret is initialized to a value that is never read before
a return statement and hence can be removed. Remove it.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190813133114.14931-1-colin.king@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: twl: voltage lists for vdd1/2 on twl4030
Andreas Kemnade [Wed, 14 Aug 2019 21:43:19 +0000 (23:43 +0200)]
regulator: twl: voltage lists for vdd1/2 on twl4030

_opp_supported_by_regulators() wrongly ignored errors from
regulator_is_supported_voltage(), so it considered errors as
success. Since
commit 498209445124 ("regulator: core: simplify return value on suported_voltage")
regulator_is_supported_voltage() returns a real boolean, so
errors make _opp_supported_by_regulators() return false.

That reveals a problem with the declaration of the VDD1/2
regulators on twl4030.
The VDD1/VDD2 regulators on twl4030 are neither defined with
voltage lists nor with the continuous flag set, so
regulator_is_supported_voltage() returns false and an error
before above mentioned commit (which was considered success)
The result is that after the above mentioned commit cpufreq
does not work properly e.g. dm3730.

[    2.490997] core: _opp_supported_by_regulators: OPP minuV: 1012500 maxuV: 1012500, not supported by regulator
[    2.501617] cpu cpu0: _opp_add: OPP not supported by regulators (300000000)
[    2.509246] core: _opp_supported_by_regulators: OPP minuV: 1200000 maxuV: 1200000, not supported by regulator
[    2.519775] cpu cpu0: _opp_add: OPP not supported by regulators (600000000)
[    2.527313] core: _opp_supported_by_regulators: OPP minuV: 1325000 maxuV: 1325000, not supported by regulator
[    2.537750] cpu cpu0: _opp_add: OPP not supported by regulators (800000000)

The patch fixes declaration of VDD1/2 regulators by
adding proper voltage lists.

Fixes: 498209445124 ("regulator: core: simplify return value on suported_voltage")
Cc: stable@vger.kernel.org
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit
Link: https://lore.kernel.org/r/20190814214319.24087-1-andreas@kemnade.info
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: act8945a-regulator: fix ldo register addresses in set_mode hook
Raag Jadav [Mon, 12 Aug 2019 18:39:54 +0000 (00:09 +0530)]
regulator: act8945a-regulator: fix ldo register addresses in set_mode hook

According to ACT8945A datasheet[1], operating modes for ldos are
controlled by BIT(5) of their respective _CTRL registers.

[1] https://active-semi.com/wp-content/uploads/ACT8945A_Datasheet.pdf

Fixes: 7482d6ecc68e ("regulator: act8945a-regulator: Implement PM functionalities")
Signed-off-by: Raag Jadav <raagjadav@gmail.com>
Link: https://lore.kernel.org/r/1565635194-5816-1-git-send-email-raagjadav@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: twl6030: workaround the VMMC reset behavior
Gregory CLEMENT [Thu, 25 Jul 2019 09:45:42 +0000 (11:45 +0200)]
regulator: twl6030: workaround the VMMC reset behavior

During reset the VMMC regulator doesn't reach 0V and only drops to
1.8V, furthermore the pulse width is under 200us whereas the SD
specification expect 1ms.

The WR_S bit allows the TWL6030 to no reset at all the VMMC during warm
reset and keep the current voltage. Thanks to this workaround the SD
card doesn't reach a undefined reset stage.

Actually this behavior is available for all the LDO regulator, so the
driver will also allow to use it with any of these regulator.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20190725094542.16547-4-gregory.clement@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: twl6030: use variable for device node
Gregory CLEMENT [Thu, 25 Jul 2019 09:45:41 +0000 (11:45 +0200)]
regulator: twl6030: use variable for device node

Instead of refering the full pdev->dev.of_node use a local variable.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20190725094542.16547-3-gregory.clement@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agodt-bindings: regulator: twl6030: Add retain-on-reset property
Gregory CLEMENT [Thu, 25 Jul 2019 09:45:40 +0000 (11:45 +0200)]
dt-bindings: regulator: twl6030: Add retain-on-reset property

During reset the VMMC regulator doesn't reach 0V and only drops to
1.8V, furthermore the pulse width is under 200us whereas the SD
specification expect 1ms.

For this 2 reasons being able to no reset at all the VMMC during warm
reset and keep the current voltage is a good workaround. The TWL6030
allows this but needs to be aware of it and this configuration should
also be shared with the bootloader.

This is the purpose of this new property: ti,retain-on-reset

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20190725094542.16547-2-gregory.clement@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: qcom-rpmh: Update PMIC modes for PMIC5
Vinod Koul [Fri, 9 Aug 2019 07:36:16 +0000 (13:06 +0530)]
regulator: qcom-rpmh: Update PMIC modes for PMIC5

Add the PMIC5 modes and use them pmic5 ldo and smps

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190809073616.1235-4-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: qcom-rpmh: Fix pmic5_bob voltage count
Vinod Koul [Fri, 9 Aug 2019 07:36:15 +0000 (13:06 +0530)]
regulator: qcom-rpmh: Fix pmic5_bob voltage count

pmic5_bob voltages count is 136 [0,135] so update it

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190809073616.1235-3-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: qcom-rpmh: Sort the compatibles
Vinod Koul [Fri, 9 Aug 2019 07:36:14 +0000 (13:06 +0530)]
regulator: qcom-rpmh: Sort the compatibles

It helps to keep sorted order for compatibles, so sort them

Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190809073616.1235-2-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: dt-bindings: Sort the compatibles and nodes
Vinod Koul [Fri, 9 Aug 2019 07:36:13 +0000 (13:06 +0530)]
regulator: dt-bindings: Sort the compatibles and nodes

It helps to keep sorted order for compatibles and nodes, so sort them

Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190809073616.1235-1-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: act8865: Fix build error without CONFIG_POWER_SUPPLY
YueHaibing [Wed, 7 Aug 2019 13:38:22 +0000 (21:38 +0800)]
regulator: act8865: Fix build error without CONFIG_POWER_SUPPLY

Building without CONFIG_POWER_SUPPLY will fail:

drivers/regulator/act8865-regulator.o: In function `act8865_pmic_probe':
act8865-regulator.c:(.text+0x357): undefined reference to `devm_power_supply_register'
drivers/regulator/act8865-regulator.o: In function `act8600_charger_get_property':
act8865-regulator.c:(.text+0x3f1): undefined reference to `power_supply_get_drvdata'

Add POWER_SUPPLY dependency to Kconfig.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 2d09a79bf637 ("regulator: act8865: Add support for act8600 charger")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190807133822.67124-1-yuehaibing@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: qcom-rpmh: Add support for SM8150
Vinod Koul [Thu, 8 Aug 2019 09:33:43 +0000 (15:03 +0530)]
regulator: qcom-rpmh: Add support for SM8150

Add support from RPMH regulators found in SM8150 platform

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190808093343.5600-2-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: dt-bindings: Add PM8150x compatibles
Vinod Koul [Thu, 8 Aug 2019 09:33:42 +0000 (15:03 +0530)]
regulator: dt-bindings: Add PM8150x compatibles

Add PM8150, PM8150L and PM8009 compatibles for these PMICs found
in some Qualcomm platforms.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190808093343.5600-1-vkoul@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: slg51000: Fix a couple NULL vs IS_ERR() checks
Dan Carpenter [Thu, 8 Aug 2019 10:33:35 +0000 (13:33 +0300)]
regulator: slg51000: Fix a couple NULL vs IS_ERR() checks

The devm_gpiod_get_from_of_node() function never returns NULL, it
returns error pointers on error.

Fixes: a867bde3dd03 ("regulator: slg51000: add slg51000 regulator driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20190808103335.GD30506@mwanda
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: core: Add of_node_put() before return
Nishka Dasgupta [Sun, 4 Aug 2019 16:20:23 +0000 (21:50 +0530)]
regulator: core: Add of_node_put() before return

Each iteration of for_each_child_of_node puts the previous node, but in
the case of a return from the middle of the loop, there is no put, thus
causing a memory leak. Hence add an of_node_put before the return in
two places.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190804162023.5673-1-nishkadg.linux@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: Remove dev_err() usage after platform_get_irq()
Stephen Boyd [Tue, 30 Jul 2019 18:15:37 +0000 (11:15 -0700)]
regulator: Remove dev_err() usage after platform_get_irq()

We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// <smpl>
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret < 0 \| ret <= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// </smpl>

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20190730181557.90391-38-swboyd@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: of: Add of_node_put() before return in function
Nishka Dasgupta [Wed, 24 Jul 2019 08:32:31 +0000 (14:02 +0530)]
regulator: of: Add of_node_put() before return in function

The local variable search in regulator_of_get_init_node takes the value
returned by either of_get_child_by_name or of_node_get, both of which
get a node. If this node is not put before returning, it could cause a
memory leak. Hence put search before a mid-loop return statement.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190724083231.10276-1-nishkadg.linux@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: act8865: fix ptr_ret.cocci warnings
kbuild test robot [Wed, 24 Jul 2019 09:22:36 +0000 (17:22 +0800)]
regulator: act8865: fix ptr_ret.cocci warnings

drivers/regulator/act8865-regulator.c:447:8-14: WARNING: PTR_ERR_OR_ZERO can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Fixes: 2d09a79bf637 ("regulator: act8865: Add support for act8600 charger")
CC: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: kbuild test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20190724092236.witxtfmubun25l2t@1905cc33b6dd
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoregulator: lp87565: Fix probe failure for "ti,lp87565"
Axel Lin [Thu, 11 Jul 2019 11:35:17 +0000 (19:35 +0800)]
regulator: lp87565: Fix probe failure for "ti,lp87565"

The "ti,lp87565" compatible string is still in of_lp87565_match_table,
but current code will return -EINVAL because lp87565->dev_type is unknown.
This was working in earlier kernel versions, so fix it.

Fixes: 7ee63bd74750 ("regulator: lp87565: Add 4-phase lp87561 regulator support")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190711113517.26077-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
4 years agoMerge tag 'v5.3-rc1' into regulator-5.3
Mark Brown [Wed, 24 Jul 2019 16:00:06 +0000 (17:00 +0100)]
Merge tag 'v5.3-rc1' into regulator-5.3

Linus 5.3-rc1

5 years agoregulator: act8865: support regulator-pull-down property
Michał Mirosław [Tue, 23 Jul 2019 16:32:07 +0000 (18:32 +0200)]
regulator: act8865: support regulator-pull-down property

AC8865 has internal 1.5k pull-down resistor that can be enabled when LDO
is shut down.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/d7338f0dfcac63eb958a6b5e42e2d540b3d3f54a.1563898936.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoregulator: act8865: rename fixed LDO ops
Michał Mirosław [Tue, 23 Jul 2019 16:32:06 +0000 (18:32 +0200)]
regulator: act8865: rename fixed LDO ops

Rename act8865_ldo_ops to act8865_fixed_ldo_ops to make room for
variable-output LDO ops change.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/12b1fe419e93dfe663990009bf1b2fbf630e9934.1563898936.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoregulator: stm32-booster: Remove .min_uV and .list_voltage for fixed regulator
Axel Lin [Tue, 23 Jul 2019 01:41:02 +0000 (09:41 +0800)]
regulator: stm32-booster: Remove .min_uV and .list_voltage for fixed regulator

Setting .n_voltages = 1 and .fixed_uV is enough for fixed regulator,
remove the redundant .min_uV and .list_voltage settings.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Link: https://lore.kernel.org/r/20190723014102.25103-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoregulator: act8865: Add support for act8600 charger
Maarten ter Huurne [Tue, 23 Jul 2019 01:14:18 +0000 (21:14 -0400)]
regulator: act8865: Add support for act8600 charger

This provides a way to monitor battery charge status via the power
supply subsystem.

Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20190723011418.29143-1-paul@crapouillou.net
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoregulator: rk808: Return REGULATOR_MODE_INVALID for invalid mode
Axel Lin [Thu, 11 Jul 2019 12:21:38 +0000 (20:21 +0800)]
regulator: rk808: Return REGULATOR_MODE_INVALID for invalid mode

-EINVAL is not a valid return value for .of_map_mode, return
REGULATOR_MODE_INVALID instead.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190711122138.5221-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoregulator: lm363x: Fix n_voltages setting for lm36274
Axel Lin [Wed, 26 Jun 2019 13:26:32 +0000 (21:26 +0800)]
regulator: lm363x: Fix n_voltages setting for lm36274

According to the datasheet http://www.ti.com/lit/ds/symlink/lm36274.pdf:
Table 23. VPOS Bias Register Field Descriptions VPOS[5:0]:
VPOS voltage (50-mV steps): VPOS = 4 V + (Code × 50 mV), 6.5 V max
000000 = 4 V
000001 = 4.05 V
:
011110 = 5.5 V (Default)
:
110010 = 6.5 V
110011 to 111111 map to 6.5 V

So the LM36274_LDO_VSEL_MAX should be 0b110010 (0x32).
The valid selectors are 0 ... LM36274_LDO_VSEL_MAX, n_voltages should be
LM36274_LDO_VSEL_MAX + 1. Similarly, the n_voltages should be
LM36274_BOOST_VSEL_MAX + 1 for LM36274_BOOST.

Fixes: bff5e8071533 ("regulator: lm363x: Add support for LM36274")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190626132632.32629-2-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoregulator: lm363x: Fix off-by-one n_voltages for lm3632 ldo_vpos/ldo_vneg
Axel Lin [Wed, 26 Jun 2019 13:26:31 +0000 (21:26 +0800)]
regulator: lm363x: Fix off-by-one n_voltages for lm3632 ldo_vpos/ldo_vneg

According to the datasheet https://www.ti.com/lit/ds/symlink/lm3632a.pdf
Table 20. VPOS Bias Register Field Descriptions VPOS[5:0]
Sets the Positive Display Bias (LDO) Voltage (50 mV per step)
000000: 4 V
000001: 4.05 V
000010: 4.1 V
....................
011101: 5.45 V
011110: 5.5 V (Default)
011111: 5.55 V
....................
100111: 5.95 V
101000: 6 V
Note: Codes 101001 to 111111 map to 6 V

The LM3632_LDO_VSEL_MAX should be 0b101000 (0x28), so the maximum voltage
can match the datasheet.

Fixes: 3a8d1a73a037 ("regulator: add LM363X driver")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190626132632.32629-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
5 years agoLinus 5.3-rc1
Linus Torvalds [Sun, 21 Jul 2019 21:05:38 +0000 (14:05 -0700)]
Linus 5.3-rc1

5 years agoMerge tag 'devicetree-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 21 Jul 2019 17:28:39 +0000 (10:28 -0700)]
Merge tag 'devicetree-fixes-for-5.3' of git://git./linux/kernel/git/robh/linux

Pull Devicetree fixes from Rob Herring:
 "Fix several warnings/errors in validation of binding schemas"

* tag 'devicetree-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: pinctrl: stm32: Fix missing 'clocks' property in examples
  dt-bindings: iio: ad7124: Fix dtc warnings in example
  dt-bindings: iio: avia-hx711: Fix avdd-supply typo in example
  dt-bindings: pinctrl: aspeed: Fix AST2500 example errors
  dt-bindings: pinctrl: aspeed: Fix 'compatible' schema errors
  dt-bindings: riscv: Limit cpus schema to only check RiscV 'cpu' nodes
  dt-bindings: Ensure child nodes are of type 'object'

5 years agoMerge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sun, 21 Jul 2019 17:09:43 +0000 (10:09 -0700)]
Merge branch 'work.misc' of git://git./linux/kernel/git/viro/vfs

Pull vfs documentation typo fix from Al Viro.

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  typo fix: it's d_make_root, not d_make_inode...

5 years agoMerge tag '5.3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 21 Jul 2019 17:01:17 +0000 (10:01 -0700)]
Merge tag '5.3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Two fixes for stable, one that had dependency on earlier patch in this
  merge window and can now go in, and a perf improvement in SMB3 open"

* tag '5.3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: update internal module number
  cifs: flush before set-info if we have writeable handles
  smb3: optimize open to not send query file internal info
  cifs: copy_file_range needs to strip setuid bits and update timestamps
  CIFS: fix deadlock in cached root handling

5 years agoiommu/amd: fix a crash in iova_magazine_free_pfns
Qian Cai [Thu, 11 Jul 2019 16:17:45 +0000 (12:17 -0400)]
iommu/amd: fix a crash in iova_magazine_free_pfns

The commit b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops
method") incorrectly changed the checking from dma_ops_alloc_iova() in
map_sg() causes a crash under memory pressure as dma_ops_alloc_iova()
never return DMA_MAPPING_ERROR on failure but 0, so the error handling
is all wrong.

   kernel BUG at drivers/iommu/iova.c:801!
    Workqueue: kblockd blk_mq_run_work_fn
    RIP: 0010:iova_magazine_free_pfns+0x7d/0xc0
    Call Trace:
     free_cpu_cached_iovas+0xbd/0x150
     alloc_iova_fast+0x8c/0xba
     dma_ops_alloc_iova.isra.6+0x65/0xa0
     map_sg+0x8c/0x2a0
     scsi_dma_map+0xc6/0x160
     pqi_aio_submit_io+0x1f6/0x440 [smartpqi]
     pqi_scsi_queue_command+0x90c/0xdd0 [smartpqi]
     scsi_queue_rq+0x79c/0x1200
     blk_mq_dispatch_rq_list+0x4dc/0xb70
     blk_mq_sched_dispatch_requests+0x249/0x310
     __blk_mq_run_hw_queue+0x128/0x200
     blk_mq_run_work_fn+0x27/0x30
     process_one_work+0x522/0xa10
     worker_thread+0x63/0x5b0
     kthread+0x1d2/0x1f0
     ret_from_fork+0x22/0x40

Fixes: b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops method")
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agohexagon: switch to generic version of pte allocation
Mike Rapoport [Tue, 30 Apr 2019 14:27:50 +0000 (17:27 +0300)]
hexagon: switch to generic version of pte allocation

The hexagon implementation pte_alloc_one(), pte_alloc_one_kernel(),
pte_free_kernel() and pte_free() is identical to the generic except of
lack of __GFP_ACCOUNT for the user PTEs allocation.

Switch hexagon to use generic version of these functions.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoMerge tag 'ntb-5.3' of git://github.com/jonmason/ntb
Linus Torvalds [Sun, 21 Jul 2019 16:46:59 +0000 (09:46 -0700)]
Merge tag 'ntb-5.3' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "New feature to add support for NTB virtual MSI interrupts, the ability
  to test and use this feature in the NTB transport layer.

  Also, bug fixes for the AMD and Switchtec drivers, as well as some
  general patches"

* tag 'ntb-5.3' of git://github.com/jonmason/ntb: (22 commits)
  NTB: Describe the ntb_msi_test client in the documentation.
  NTB: Add MSI interrupt support to ntb_transport
  NTB: Add ntb_msi_test support to ntb_test
  NTB: Introduce NTB MSI Test Client
  NTB: Introduce MSI library
  NTB: Rename ntb.c to support multiple source files in the module
  NTB: Introduce functions to calculate multi-port resource index
  NTB: Introduce helper functions to calculate logical port number
  PCI/switchtec: Add module parameter to request more interrupts
  PCI/MSI: Support allocating virtual MSI interrupts
  ntb_hw_switchtec: Fix setup MW with failure bug
  ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case
  ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function
  NTB: correct ntb_dev_ops and ntb_dev comment typos
  NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask()
  ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev()
  NTB: ntb_transport: Ensure qp->tx_mw_dma_addr is initaliazed
  NTB: ntb_hw_amd: set peer limit register
  NTB: ntb_perf: Clear stale values in doorbell and command SPAD register
  NTB: ntb_perf: Disable NTB link after clearing peer XLAT registers
  ...

5 years agotypo fix: it's d_make_root, not d_make_inode...
Al Viro [Sun, 21 Jul 2019 03:17:30 +0000 (23:17 -0400)]
typo fix: it's d_make_root, not d_make_inode...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
5 years agodt-bindings: pinctrl: stm32: Fix missing 'clocks' property in examples
Rob Herring [Tue, 16 Jul 2019 21:34:40 +0000 (15:34 -0600)]
dt-bindings: pinctrl: stm32: Fix missing 'clocks' property in examples

Now that examples are validated against the DT schema, an error with
required 'clocks' property missing is exposed:

Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.example.dt.yaml: \
pinctrl@40020000: gpio@0: 'clocks' is a required property
Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.example.dt.yaml: \
pinctrl@50020000: gpio@1000: 'clocks' is a required property
Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.example.dt.yaml: \
pinctrl@50020000: gpio@2000: 'clocks' is a required property

Add the missing 'clocks' properties to the examples to fix the errors.

Fixes: 2c9239c125f0 ("dt-bindings: pinctrl: Convert stm32 pinctrl bindings to json-schema")
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agodt-bindings: iio: ad7124: Fix dtc warnings in example
Rob Herring [Tue, 16 Jul 2019 20:21:56 +0000 (14:21 -0600)]
dt-bindings: iio: ad7124: Fix dtc warnings in example

With the conversion to DT schema, the examples are now compiled with
dtc. The ad7124 binding example has the following warning:

Documentation/devicetree/bindings/iio/adc/adi,ad7124.example.dts:19.11-21: \
Warning (reg_format): /example-0/adc@0:reg: property has invalid length (4 bytes) (#address-cells == 1, #size-cells == 1)

There's a default #size-cells and #address-cells values of 1 for
examples. For examples needing different values such as this one on a
SPI bus, they need to provide a SPI bus parent node.

Fixes: 26ae15e62d3c ("Convert AD7124 bindings documentation to YAML format.")

Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agodt-bindings: iio: avia-hx711: Fix avdd-supply typo in example
Rob Herring [Tue, 16 Jul 2019 20:13:29 +0000 (14:13 -0600)]
dt-bindings: iio: avia-hx711: Fix avdd-supply typo in example

Now that examples are validated against the DT schema, a typo in
avia-hx711 example generates a warning:

Documentation/devicetree/bindings/iio/adc/avia-hx711.example.dt.yaml: weight: 'avdd-supply' is a required property

Fix the typo.

Fixes: 5150ec3fe125 ("avia-hx711.yaml: transform DT binding to YAML")
Cc: Andreas Klinger <ak@it-klinger.de>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agodt-bindings: pinctrl: aspeed: Fix AST2500 example errors
Rob Herring [Mon, 15 Jul 2019 22:48:41 +0000 (16:48 -0600)]
dt-bindings: pinctrl: aspeed: Fix AST2500 example errors

The schema examples are now validated against the schema itself. The
AST2500 pinctrl schema has a couple of errors:

Documentation/devicetree/bindings/pinctrl/aspeed,ast2500-pinctrl.example.dt.yaml: \
example-0: $nodename:0: 'example-0' does not match '^(bus|soc|axi|ahb|apb)(@[0-9a-f]+)?$'
Documentation/devicetree/bindings/pinctrl/aspeed,ast2500-pinctrl.example.dt.yaml: \
pinctrl: aspeed,external-nodes: [[1, 2]] is too short

Fixes: 0a617de16730 ("dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema")
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agodt-bindings: pinctrl: aspeed: Fix 'compatible' schema errors
Rob Herring [Mon, 15 Jul 2019 22:37:25 +0000 (16:37 -0600)]
dt-bindings: pinctrl: aspeed: Fix 'compatible' schema errors

The Aspeed pinctl schema have errors in the 'compatible' schema:

Documentation/devicetree/bindings/pinctrl/aspeed,ast2400-pinctrl.yaml: \
properties:compatible:enum: ['aspeed', 'ast2400-pinctrl', 'aspeed', 'g4-pinctrl'] has non-unique elements
Documentation/devicetree/bindings/pinctrl/aspeed,ast2500-pinctrl.yaml: \
properties:compatible:enum: ['aspeed', 'ast2500-pinctrl', 'aspeed', 'g5-pinctrl'] has non-unique elements

Flow style sequences have to be quoted if the vales contain ','. Fix
this by using the more common one line per entry formatting.

Fixes: 0a617de16730 ("dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema")
Fixes: 07457937bb5c ("dt-bindings: pinctrl: aspeed: Convert AST2400 bindings to json-schema")
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agodt-bindings: riscv: Limit cpus schema to only check RiscV 'cpu' nodes
Rob Herring [Wed, 26 Jun 2019 23:57:59 +0000 (17:57 -0600)]
dt-bindings: riscv: Limit cpus schema to only check RiscV 'cpu' nodes

Matching on the 'cpus' node was a bad choice because the schema is
incorrectly applied to non-RiscV cpus nodes. As we now have a common cpus
schema which checks the general structure, it is also redundant to do so
in the Risc-V CPU schema.

The downside is one could conceivably mix different architecture's cpu
nodes or have typos in the compatible string. The latter problem pretty
much exists for every schema.

Acked-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agodt-bindings: Ensure child nodes are of type 'object'
Rob Herring [Wed, 3 Jul 2019 20:17:06 +0000 (14:17 -0600)]
dt-bindings: Ensure child nodes are of type 'object'

Properties which are child node definitions need to have an explict
type. Otherwise, a matching (DT) property can silently match when an
error is desired. Fix this up tree-wide. Once this is fixed, the
meta-schema will enforce this on any child node definitions.

Cc: Chen-Yu Tsai <wens@csie.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: linux-mtd@lists.infradead.org
Cc: linux-gpio@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-spi@vger.kernel.org
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Rob Herring <robh@kernel.org>
5 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 20 Jul 2019 19:22:30 +0000 (12:22 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull more input updates from Dmitry Torokhov:

 - Apple SPI keyboard and trackpad driver for newer Macs

 - ALPS driver will ignore trackpoint-only devices to give the
   trackpoint driver a chance to handle them properly

 - another Lenovo is switched over to SMbus from PS/2

 - assorted driver fixups.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: alps - fix a mismatch between a condition check and its comment
  Input: psmouse - fix build error of multiple definition
  Input: applespi - remove set but not used variables 'sts'
  Input: add Apple SPI keyboard and trackpad driver
  Input: alps - don't handle ALPS cs19 trackpoint-only device
  Input: hyperv-keyboard - remove dependencies on PAGE_SIZE for ring buffer
  Input: adp5589 - initialize GPIO controller parent device
  Input: iforce - remove empty multiline comments
  Input: synaptics - fix misuse of strlcpy
  Input: auo-pixcir-ts - switch to using  devm_add_action_or_reset()
  Input: gtco - bounds check collection indent level
  Input: mtk-pmic-keys - add of_node_put() before return
  Input: sun4i-lradc-keys - add of_node_put() before return
  Input: synaptics - whitelist Lenovo T580 SMBus intertouch

5 years agoMerge tag 'dma-mapping-5.3-1' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Sat, 20 Jul 2019 19:09:52 +0000 (12:09 -0700)]
Merge tag 'dma-mapping-5.3-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:
 "Fix various regressions:

   - force unencrypted dma-coherent buffers if encryption bit can't fit
     into the dma coherent mask (Tom Lendacky)

   - avoid limiting request size if swiotlb is not used (me)

   - fix swiotlb handling in dma_direct_sync_sg_for_cpu/device (Fugang
     Duan)"

* tag 'dma-mapping-5.3-1' of git://git.infradead.org/users/hch/dma-mapping:
  dma-direct: correct the physical addr in dma_direct_sync_sg_for_cpu/device
  dma-direct: only limit the mapping size if swiotlb could be used
  dma-mapping: add a dma_addressing_limited helper
  dma-direct: Force unencrypted DMA under SME for certain DMA masks

5 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 20 Jul 2019 18:24:49 +0000 (11:24 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A set of x86 specific fixes and updates:

   - The CR2 corruption fixes which store CR2 early in the entry code
     and hand the stored address to the fault handlers.

   - Revert a forgotten leftover of the dropped FSGSBASE series.

   - Plug a memory leak in the boot code.

   - Make the Hyper-V assist functionality robust by zeroing the shadow
     page.

   - Remove a useless check for dead processes with LDT

   - Update paravirt and VMware maintainers entries.

   - A few cleanup patches addressing various compiler warnings"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry/64: Prevent clobbering of saved CR2 value
  x86/hyper-v: Zero out the VP ASSIST PAGE on allocation
  x86, boot: Remove multiple copy of static function sanitize_boot_params()
  x86/boot/compressed/64: Remove unused variable
  x86/boot/efi: Remove unused variables
  x86/mm, tracing: Fix CR2 corruption
  x86/entry/64: Update comments and sanity tests for create_gap
  x86/entry/64: Simplify idtentry a little
  x86/entry/32: Simplify common_exception
  x86/paravirt: Make read_cr2() CALLEE_SAVE
  MAINTAINERS: Update PARAVIRT_OPS_INTERFACE and VMWARE_HYPERVISOR_INTERFACE
  x86/process: Delete useless check for dead process with LDT
  x86: math-emu: Hide clang warnings for 16-bit overflow
  x86/e820: Use proper booleans instead of 0/1
  x86/apic: Silence -Wtype-limits compiler warnings
  x86/mm: Free sme_early_buffer after init
  x86/boot: Fix memory leak in default_get_smp_config()
  Revert "x86/ptrace: Prevent ptrace from clearing the FS/GS selector" and fix the test

5 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 20 Jul 2019 18:06:12 +0000 (11:06 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf tooling updates from Thomas Gleixner:
 "A set of perf improvements and fixes:

  perf db-export:
   - Improvements in how COMM details are exported to databases for post
     processing and use in the sql-viewer.py UI.

   - Export switch events to the database.

  BPF:
   - Bump rlimit(MEMLOCK) for 'perf test bpf' and 'perf trace', just
     like selftests/bpf/bpf_rlimit.h do, which makes errors due to
     exhaustion of this limit, which are kinda cryptic (EPERM sometimes)
     less frequent.

  perf version:
   - Fix segfault due to missing OPT_END(), noticed on PowerPC.

  perf vendor events:
   - Add JSON files for IBM s/390 machine type 8561.

  perf cs-etm (ARM):
   - Fix two cases of error returns not bing done properly: Invalid
     ERR_PTR() use and loss of propagation error codes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
  perf version: Fix segfault due to missing OPT_END()
  perf vendor events s390: Add JSON files for machine type 8561
  perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()
  perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info
  perf scripts python: export-to-postgresql.py: Export switch events
  perf scripts python: export-to-sqlite.py: Export switch events
  perf db-export: Export switch events
  perf db-export: Factor out db_export__threads()
  perf script: Add scripting operation process_switch()
  perf scripts python: exported-sql-viewer.py: Use new 'has_calls' column
  perf scripts python: exported-sql-viewer.py: Remove redundant semi-colons
  perf scripts python: export-to-postgresql.py: Add has_calls column to comms table
  perf scripts python: export-to-sqlite.py: Add has_calls column to comms table
  perf db-export: Also export thread's current comm
  perf db-export: Factor out db_export__comm()
  perf scripts python: export-to-postgresql.py: Export comm details
  perf scripts python: export-to-sqlite.py: Export comm details
  perf db-export: Export comm details
  perf db-export: Fix a white space issue in db_export__sample()
  perf db-export: Move export__comm_thread into db_export__sample()
  ...

5 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 20 Jul 2019 17:45:15 +0000 (10:45 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull core fixes from Thomas Gleixner:

 - A collection of objtool fixes which address recent fallout partially
   exposed by newer toolchains, clang, BPF and general code changes.

 - Force USER_DS for user stack traces

[ Note: the "objtool fixes" are not all to objtool itself, but for
  kernel code that triggers objtool warnings.

  Things like missing function size annotations, or code that confuses
  the unwinder etc.   - Linus]

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
  objtool: Support conditional retpolines
  objtool: Convert insn type to enum
  objtool: Fix seg fault on bad switch table entry
  objtool: Support repeated uses of the same C jump table
  objtool: Refactor jump table code
  objtool: Refactor sibling call detection logic
  objtool: Do frame pointer check before dead end check
  objtool: Change dead_end_function() to return boolean
  objtool: Warn on zero-length functions
  objtool: Refactor function alias logic
  objtool: Track original function across branches
  objtool: Add mcsafe_handle_tail() to the uaccess safe list
  bpf: Disable GCC -fgcse optimization for ___bpf_prog_run()
  x86/uaccess: Remove redundant CLACs in getuser/putuser error paths
  x86/uaccess: Don't leak AC flag into fentry from mcsafe_handle_tail()
  x86/uaccess: Remove ELF function annotation from copy_user_handle_tail()
  x86/head/64: Annotate start_cpu0() as non-callable
  x86/entry: Fix thunk function ELF sizes
  x86/kvm: Don't call kvm_spurious_fault() from .fixup
  x86/kvm: Replace vmx_vmenter()'s call to kvm_spurious_fault() with UD2
  ...

5 years agoMerge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 20 Jul 2019 17:43:03 +0000 (10:43 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull smp fix from Thomas Gleixner:
 "Add warnings to the smp function calls so callers from wrong contexts
  get detected"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  smp: Warn on function calls from softirq context

5 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 20 Jul 2019 17:33:44 +0000 (10:33 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull CONFIG_PREEMPT_RT stub config from Thomas Gleixner:
 "The real-time preemption patch set exists for almost 15 years now and
  while the vast majority of infrastructure and enhancements have found
  their way into the mainline kernel, the final integration of RT is
  still missing.

  Over the course of the last few years, we have worked on reducing the
  intrusivenness of the RT patches by refactoring kernel infrastructure
  to be more real-time friendly. Almost all of these changes were
  benefitial to the mainline kernel on their own, so there was no
  objection to integrate them.

  Though except for the still ongoing printk refactoring, the remaining
  changes which are required to make RT a first class mainline citizen
  are not longer arguable as immediately beneficial for the mainline
  kernel. Most of them are either reordering code flows or adding RT
  specific functionality.

  But this now has hit a wall and turned into a classic hen and egg
  problem:

     Maintainers are rightfully wary vs. these changes as they make only
     sense if the final integration of RT into the mainline kernel takes
     place.

  Adding CONFIG_PREEMPT_RT aims to solve this as a clear sign that RT
  will be fully integrated into the mainline kernel. The final
  integration of the missing bits and pieces will be of course done with
  the same careful approach as we have used in the past.

  While I'm aware that you are not entirely enthusiastic about that, I
  think that RT should receive the same treatment as any other widely
  used out of tree functionality, which we have accepted into mainline
  over the years.

  RT has become the de-facto standard real-time enhancement and is
  shipped by enterprise, embedded and community distros. It's in use
  throughout a wide range of industries: telecommunications, industrial
  automation, professional audio, medical devices, data acquisition,
  automotive - just to name a few major use cases.

  RT development is backed by a Linuxfoundation project which is
  supported by major stakeholders of this technology. The funding will
  continue over the actual inclusion into mainline to make sure that the
  functionality is neither introducing regressions, regressing itself,
  nor becomes subject to bitrot. There is also a lifely user community
  around RT as well, so contrary to the grim situation 5 years ago, it's
  a healthy project.

  As RT is still a good vehicle to exercise rarely used code paths and
  to detect hard to trigger issues, you could at least view it as a QA
  tool if nothing else"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt, Kconfig: Introduce CONFIG_PREEMPT_RT

5 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 20 Jul 2019 17:20:27 +0000 (10:20 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull more KVM updates from Paolo Bonzini:
 "Mostly bugfixes, but also:

   - s390 support for KVM selftests

   - LAPIC timer offloading to housekeeping CPUs

   - Extend an s390 optimization for overcommitted hosts to all
     architectures

   - Debugging cleanups and improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (25 commits)
  KVM: x86: Add fixed counters to PMU filter
  KVM: nVMX: do not use dangling shadow VMCS after guest reset
  KVM: VMX: dump VMCS on failed entry
  KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
  KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup
  KVM: Boost vCPUs that are delivering interrupts
  KVM: selftests: Remove superfluous define from vmx.c
  KVM: SVM: Fix detection of AMD Errata 1096
  KVM: LAPIC: Inject timer interrupt via posted interrupt
  KVM: LAPIC: Make lapic timer unpinned
  KVM: x86/vPMU: reset pmc->counter to 0 for pmu fixed_counters
  KVM: nVMX: Ignore segment base for VMX memory operand when segment not FS or GS
  kvm: x86: ioapic and apic debug macros cleanup
  kvm: x86: some tsc debug cleanup
  kvm: vmx: fix coccinelle warnings
  x86: kvm: avoid constant-conversion warning
  x86: kvm: avoid -Wsometimes-uninitized warning
  KVM: x86: expose AVX512_BF16 feature to guest
  KVM: selftests: enable pgste option for the linker on s390
  KVM: selftests: Move kvm_create_max_vcpus test to generic code
  ...

5 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 20 Jul 2019 17:04:58 +0000 (10:04 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is the final round of mostly small fixes in our initial submit.

  It's mostly minor fixes and driver updates. The only change of note is
  adding a virt_boundary_mask to the SCSI host and host template to
  parametrise this for NVMe devices instead of having them do a call in
  slave_alloc. It's a fairly straightforward conversion except in the
  two NVMe handling drivers that didn't set it who now have a virtual
  infinity parameter added"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
  scsi: megaraid_sas: set an unlimited max_segment_size
  scsi: mpt3sas: set an unlimited max_segment_size for SAS 3.0 HBAs
  scsi: IB/srp: set virt_boundary_mask in the scsi host
  scsi: IB/iser: set virt_boundary_mask in the scsi host
  scsi: storvsc: set virt_boundary_mask in the scsi host template
  scsi: ufshcd: set max_segment_size in the scsi host template
  scsi: core: take the DMA max mapping size into account
  scsi: core: add a host / host template field for the virt boundary
  scsi: core: Fix race on creating sense cache
  scsi: sd_zbc: Fix compilation warning
  scsi: libfc: fix null pointer dereference on a null lport
  scsi: zfcp: fix GCC compiler warning emitted with -Wmaybe-uninitialized
  scsi: zfcp: fix request object use-after-free in send path causing wrong traces
  scsi: zfcp: fix request object use-after-free in send path causing seqno errors
  scsi: megaraid_sas: Update driver version to 07.710.50.00
  scsi: megaraid_sas: Add module parameter for FW Async event logging
  scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers
  scsi: megaraid_sas: Fix calculation of target ID
  scsi: lpfc: reduce stack size with CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE
  scsi: devinfo: BLIST_TRY_VPD_PAGES for SanDisk Cruzer Blade
  ...

5 years agoMerge tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 20 Jul 2019 16:34:55 +0000 (09:34 -0700)]
Merge tag 'kbuild-v5.3-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - match the directory structure of the linux-libc-dev package to that
   of Debian-based distributions

 - fix incorrect include/config/auto.conf generation when Kconfig
   creates it along with the .config file

 - remove misleading $(AS) from documents

 - clean up precious tag files by distclean instead of mrproper

 - add a new coccinelle patch for devm_platform_ioremap_resource
   migration

 - refactor module-related scripts to read modules.order instead of
   $(MODVERDIR)/*.mod files to get the list of created modules

 - remove MODVERDIR

 - update list of header compile-test

 - add -fcf-protection=none flag to avoid conflict with the retpoline
   flags when CONFIG_RETPOLINE=y

 - misc cleanups

* tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  kbuild: add -fcf-protection=none when using retpoline flags
  kbuild: update compile-test header list for v5.3-rc1
  kbuild: split out *.mod out of {single,multi}-used-m rules
  kbuild: remove 'prepare1' target
  kbuild: remove the first line of *.mod files
  kbuild: create *.mod with full directory path and remove MODVERDIR
  kbuild: export_report: read modules.order instead of .tmp_versions/*.mod
  kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod
  kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod
  kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod
  scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver
  kbuild: remove duplication from modules.order in sub-directories
  kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}
  kbuild: do not create empty modules.order in the prepare stage
  coccinelle: api: add devm_platform_ioremap_resource script
  kbuild: compile-test headers listed in header-test-m as well
  kbuild: remove unused hostcc-option
  kbuild: remove tag files by distclean instead of mrproper
  kbuild: add --hash-style= and --build-id unconditionally
  kbuild: get rid of misleading $(AS) from documents
  ...

5 years agoMerge branch 'work.dcache2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 20 Jul 2019 16:15:51 +0000 (09:15 -0700)]
Merge branch 'work.dcache2' of git://git./linux/kernel/git/viro/vfs

Pull dcache and mountpoint updates from Al Viro:
 "Saner handling of refcounts to mountpoints.

  Transfer the counting reference from struct mount ->mnt_mountpoint
  over to struct mountpoint ->m_dentry. That allows us to get rid of the
  convoluted games with ordering of mount shutdowns.

  The cost is in teaching shrink_dcache_{parent,for_umount} to cope with
  mixed-filesystem shrink lists, which we'll also need for the Slab
  Movable Objects patchset"

* 'work.dcache2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  switch the remnants of releasing the mountpoint away from fs_pin
  get rid of detach_mnt()
  make struct mountpoint bear the dentry reference to mountpoint, not struct mount
  Teach shrink_dcache_parent() to cope with mixed-filesystem shrink lists
  fs/namespace.c: shift put_mountpoint() to callers of unhash_mnt()
  __detach_mounts(): lookup_mountpoint() can't return ERR_PTR() anymore
  nfs: dget_parent() never returns NULL
  ceph: don't open-code the check for dead lockref

5 years agox86/entry/64: Prevent clobbering of saved CR2 value
Thomas Gleixner [Sat, 20 Jul 2019 08:56:41 +0000 (10:56 +0200)]
x86/entry/64: Prevent clobbering of saved CR2 value

The recent fix for CR2 corruption introduced a new way to reliably corrupt
the saved CR2 value.

CR2 is saved early in the entry code in RDX, which is the third argument to
the fault handling functions. But it missed that between saving and
invoking the fault handler enter_from_user_mode() can be called. RDX is a
caller saved register so the invoked function can freely clobber it with
the obvious consequences.

The TRACE_IRQS_OFF call is safe as it calls through the thunk which
preserves RDX, but TRACE_IRQS_OFF_DEBUG is not because it also calls into
C-code outside of the thunk.

Store CR2 in R12 instead which is a callee saved register and move R12 to
RDX just before calling the fault handler.

Fixes: a0d14b8909de ("x86/mm, tracing: Fix CR2 corruption")
Reported-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1907201020540.1782@nanos.tec.linutronix.de
5 years agosmp: Warn on function calls from softirq context
Peter Zijlstra [Thu, 18 Jul 2019 09:20:09 +0000 (11:20 +0200)]
smp: Warn on function calls from softirq context

It's clearly documented that smp function calls cannot be invoked from
softirq handling context. Unfortunately nothing enforces that or emits a
warning.

A single function call can be invoked from softirq context only via
smp_call_function_single_async().

The only legit context is task context, so add a warning to that effect.

Reported-by: luferry <luferry@163.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190718160601.GP3402@hirez.programming.kicks-ass.net
5 years agoKVM: x86: Add fixed counters to PMU filter
Eric Hankland [Thu, 18 Jul 2019 18:38:18 +0000 (11:38 -0700)]
KVM: x86: Add fixed counters to PMU filter

Updates KVM_CAP_PMU_EVENT_FILTER so it can also whitelist or blacklist
fixed counters.

Signed-off-by: Eric Hankland <ehankland@google.com>
[No need to check padding fields for zero. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: nVMX: do not use dangling shadow VMCS after guest reset
Paolo Bonzini [Fri, 19 Jul 2019 16:41:10 +0000 (18:41 +0200)]
KVM: nVMX: do not use dangling shadow VMCS after guest reset

If a KVM guest is reset while running a nested guest, free_nested will
disable the shadow VMCS execution control in the vmcs01.  However,
on the next KVM_RUN vmx_vcpu_run would nevertheless try to sync
the VMCS12 to the shadow VMCS which has since been freed.

This causes a vmptrld of a NULL pointer on my machime, but Jan reports
the host to hang altogether.  Let's see how much this trivial patch fixes.

Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Liran Alon <liran.alon@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: VMX: dump VMCS on failed entry
Paolo Bonzini [Fri, 19 Jul 2019 16:15:08 +0000 (18:15 +0200)]
KVM: VMX: dump VMCS on failed entry

This is useful for debugging, and is ratelimited nowadays.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
Like Xu [Thu, 18 Jul 2019 05:35:14 +0000 (13:35 +0800)]
KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed

If a perf_event creation fails due to any reason of the host perf
subsystem, it has no chance to log the corresponding event for guest
which may cause abnormal sampling data in guest result. In debug mode,
this message helps to understand the state of vPMC and we may not
limit the number of occurrences but not in a spamming style.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Like Xu <like.xu@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup
Wanpeng Li [Thu, 18 Jul 2019 11:39:07 +0000 (19:39 +0800)]
KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup

Use kvm_vcpu_wake_up() in kvm_s390_vcpu_wakeup().

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: Boost vCPUs that are delivering interrupts
Wanpeng Li [Thu, 18 Jul 2019 11:39:06 +0000 (19:39 +0800)]
KVM: Boost vCPUs that are delivering interrupts

Inspired by commit 9cac38dd5d (KVM/s390: Set preempted flag during
vcpu wakeup and interrupt delivery), we want to also boost not just
lock holders but also vCPUs that are delivering interrupts. Most
smp_call_function_many calls are synchronous, so the IPI target vCPUs
are also good yield candidates.  This patch introduces vcpu->ready to
boost vCPUs during wakeup and interrupt delivery time; unlike s390 we do
not reuse vcpu->preempted so that voluntarily preempted vCPUs are taken
into account by kvm_vcpu_on_spin, but vmx_vcpu_pi_put is not affected
(VT-d PI handles voluntary preemption separately, in pi_pre_block).

Testing on 80 HT 2 socket Xeon Skylake server, with 80 vCPUs VM 80GB RAM:
ebizzy -M

            vanilla     boosting    improved
1VM          21443       23520         9%
2VM           2800        8000       180%
3VM           1800        3100        72%

Testing on my Haswell desktop 8 HT, with 8 vCPUs VM 8GB RAM, two VMs,
one running ebizzy -M, the other running 'stress --cpu 2':

w/ boosting + w/o pv sched yield(vanilla)

            vanilla     boosting   improved
              1570         4000      155%

w/ boosting + w/ pv sched yield(vanilla)

            vanilla     boosting   improved
              1844         5157      179%

w/o boosting, perf top in VM:

 72.33%  [kernel]       [k] smp_call_function_many
  4.22%  [kernel]       [k] call_function_i
  3.71%  [kernel]       [k] async_page_fault

w/ boosting, perf top in VM:

 38.43%  [kernel]       [k] smp_call_function_many
  6.31%  [kernel]       [k] async_page_fault
  6.13%  libc-2.23.so   [.] __memcpy_avx_unaligned
  4.88%  [kernel]       [k] call_function_interrupt

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 years agoKVM: selftests: Remove superfluous define from vmx.c
Thomas Huth [Thu, 18 Jul 2019 11:55:27 +0000 (13:55 +0200)]
KVM: selftests: Remove superfluous define from vmx.c

The code in vmx.c does not use "program_invocation_name", so there
is no need to "#define _GNU_SOURCE" here.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>