platform/kernel/linux-rpi.git
6 years agousb: renesas_usbhs: rcar3: Use OTG mode for R-Car D3
Yoshihiro Shimoda [Fri, 21 Sep 2018 12:26:30 +0000 (21:26 +0900)]
usb: renesas_usbhs: rcar3: Use OTG mode for R-Car D3

Since R-Car D3 can use OTG mode, this patch changes the UGCTRL2
value to UGCTRL2_USB0SEL_OTG and UGCTRL2_VBUSSEL like other R-Car
Gen3 SoCs.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoRevert "usb: renesas_usbhs: set the mode by using extcon state for non-otg channel"
Yoshihiro Shimoda [Fri, 21 Sep 2018 12:26:29 +0000 (21:26 +0900)]
Revert "usb: renesas_usbhs: set the mode by using extcon state for non-otg channel"

This reverts commit cd14247d5c14b9b20bb3d3dfcaa899ca22c8dccc.

R-Car D3 can use OTG mode in fact. So, the commit doesn't need anymore.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoRevert "usb: renesas_usbhs: add extcon notifier to set mode for non-otg channel"
Yoshihiro Shimoda [Fri, 21 Sep 2018 12:26:28 +0000 (21:26 +0900)]
Revert "usb: renesas_usbhs: add extcon notifier to set mode for non-otg channel"

This reverts commit 8ada211d0383b72878582bd312b984a9eae62b30.

R-Car D3 can use OTG mode in fact. So, the commit doesn't need anymore.
In other words, like other R-Car Gen3 SoCs, R-Car D3 can change the mode
by using the phy-rcar-gen3-usb2 driver.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: core: added uevent for over-current
Jon Flatley [Thu, 20 Sep 2018 17:17:54 +0000 (10:17 -0700)]
usb: core: added uevent for over-current

After commit 1cbd53c8cd85 ("usb: core: introduce per-port over-current
counters") usb ports expose a sysfs value 'over_current_count'
to user space. This value on its own is not very useful as it requires
manual polling.

As a solution, fire a udev event from the usb hub device that specifies
the values 'OVER_CURRENT_PORT' and 'OVER_CURRENT_COUNT' that indicate
the path of the usb port where the over-current event occurred and the
value of 'over_current_count' in sysfs. Additionally, call
sysfs_notify() so the sysfs value supports poll().

Signed-off-by: Jon Flatley <jflat@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: typec: fusb302: Resolve fixed power role contract setup
Adam Thomson [Wed, 26 Sep 2018 15:23:52 +0000 (16:23 +0100)]
usb: typec: fusb302: Resolve fixed power role contract setup

When the controller is configured for a fixed power role (Source
only or Sink only), attach does not proceed within the TCPM state
machine as there is no CC event generated by this driver to update
the CC line status.

To rectify this, when CC is configured as Source or Sink we now
make use of the hardware's automatic fixed Source or Sink
toggling mechanism, which detects attaches in the same way as for
DRP toggling. In this way the result of toggling is handled in the
same way by the 'fusb302_handle_togdone()' function, and CC events
are generated as expected for TCPM allowing a contract to be
established.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: typec: fusb302: Correct spelling mistake for toggling state
Adam Thomson [Wed, 26 Sep 2018 15:23:51 +0000 (16:23 +0100)]
usb: typec: fusb302: Correct spelling mistake for toggling state

There's a typo in the enum name of the 'OFF' state for toggling
(TOGGLINE instead of TOGGLING). This commit resolves that trivial
spelling inconsistency.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoxhci: Avoid USB autosuspend when resuming USB2 ports.
Anshuman Gupta [Thu, 20 Sep 2018 16:13:40 +0000 (19:13 +0300)]
xhci: Avoid USB autosuspend when resuming USB2 ports.

When USB bus host controller root hub resumes from autosuspend,
it immediately tries to enter auto-suspend, but there can be a
scenario when root hub is resuming its usb2 ports, in that particular
case USB host controller auto suspend fails since it is busy
to resuming its usb2 ports.

This makes multiple failed cycles of auto-suspend until all usb2
ports of host controller root hub do not resume.

This patch uses USB core framework usb_hcd_start_port_resume,
usb_hcd_end_port_resume API's in order to  autoresume/autosuspend
root hub properly.

Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: xhci: tegra: Firmware header is little endian
Thierry Reding [Thu, 20 Sep 2018 16:13:39 +0000 (19:13 +0300)]
usb: xhci: tegra: Firmware header is little endian

The XUSB firmware header is in little endian byte order, so make the
fields __le32 and __le16 instead of u32 and u16 to avoid warnings from
sparse when the fields are used with the endian-aware __le32_to_cpu()
and __le16_to_cpu() accessors, respectively.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoxhci-pci: allow host runtime PM as default for Intel Alpine and Titan Ridge
Mathias Nyman [Thu, 20 Sep 2018 16:13:38 +0000 (19:13 +0300)]
xhci-pci: allow host runtime PM as default for Intel Alpine and Titan Ridge

The xhci controller on Alpine and Titan Ridge keeps the whole thunderbolt
awake if the host controller is not allowed tp sleep.
This is the case even if no USB devices are connected to the host.

Because of this bigger impact, allow runtime pm as default for these xhci
controllers in the driver.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoxhci: Use soft retry to recover faster from transaction errors
Mathias Nyman [Thu, 20 Sep 2018 16:13:37 +0000 (19:13 +0300)]
xhci: Use soft retry to recover faster from transaction errors

Use soft retry to recover from a USB Transaction Errors that are caused by
temporary error conditions. The USB device is not aware that the xHC
has halted the endpoint, and will be waiting for another retry

A Soft Retry perform additional retries and recover from an error which has
caused the xHC to halt an endpoint.

Soft retry has some limitations:
Soft Retry attempts shall not be performed on Isoch endpoints
Soft Retry attempts shall not be performed if the device is behind a TT in
a HS Hub

Software shall limit the number of unsuccessful Soft Retry attempts to
prevent an infinite loop.

For more details on Soft retry see xhci specs  4.6.8.1

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: host: xhci-plat: add platform TPL support
Peter Chen [Thu, 20 Sep 2018 16:13:36 +0000 (19:13 +0300)]
usb: host: xhci-plat: add platform TPL support

The TPL support is used to identify targeted devices during
EH2.0 and EH3.0 certification test, the user can add "tpl-support"
at dts to enable this feature.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: xhci-mtk: supports SSP without external USB3 gen2 hub
Chunfeng Yun [Thu, 20 Sep 2018 16:13:35 +0000 (19:13 +0300)]
usb: xhci-mtk: supports SSP without external USB3 gen2 hub

Supports SSP scheduling only for SSP device directly connected
to root hub but not through external USB3 gen2 hub which need
use a new scheduling way.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: xhci-mtk: supports bandwidth scheduling with multi-TT
Chunfeng Yun [Thu, 20 Sep 2018 16:13:34 +0000 (19:13 +0300)]
usb: xhci-mtk: supports bandwidth scheduling with multi-TT

Supports LowSpeed and FullSpeed INT/ISOC bandwidth scheduling
with USB multi-TT

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: xhci-mtk: improve bandwidth scheduling
Chunfeng Yun [Thu, 20 Sep 2018 16:13:33 +0000 (19:13 +0300)]
usb: xhci-mtk: improve bandwidth scheduling

Mainly improve SuperSpeed ISOC bandwidth in last microframe,
and LowSpeed/FullSpeed IN INT/ISOC bandwidth in split and
idle microframes by introduing a bandwidth budget table;

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: xhci-mtk: fix ISOC error when interval is zero
Chunfeng Yun [Thu, 20 Sep 2018 16:13:32 +0000 (19:13 +0300)]
usb: xhci-mtk: fix ISOC error when interval is zero

If the interval equal zero, needn't round up to power of two
for the number of packets in each ESIT, so fix it.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: xhci-mtk: use maximum ESIT payload of endpiont context
Chunfeng Yun [Thu, 20 Sep 2018 16:13:31 +0000 (19:13 +0300)]
usb: xhci-mtk: use maximum ESIT payload of endpiont context

Make use of maximum ESIT payload of endpoint context to calculate
the number of packets to send in each ESIT

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: host: Replace empty define with do while
Corentin Labbe [Wed, 19 Sep 2018 19:48:53 +0000 (19:48 +0000)]
usb: host: Replace empty define with do while

It's dangerous to use empty code define.
Furthermore it lead to the following warning:
"suggest braces around empty body in an « else » statement"

So let's replace emptyness by "do {} while(0)"

Furthermore, as suggested by Joe Perches, rename the macro to INCR.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoUSB: STORAGE: ISD200 Fixed coding style issue "space required in for loop"
Jagdish Tirumala [Tue, 11 Sep 2018 16:35:00 +0000 (09:35 -0700)]
USB: STORAGE: ISD200 Fixed coding style issue "space required in for loop"

Fixed errors spaces required around the for loop '=' , ';' and '<'
in drivers/usb/storage/isd200.c

Signed-off-by: Jagdish Tirumala <t.jag587@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: typec: Group all TCPCI/TCPM code together
Heikki Krogerus [Thu, 20 Sep 2018 11:23:47 +0000 (14:23 +0300)]
usb: typec: Group all TCPCI/TCPM code together

Moving all the drivers that depend on the Port Controller
Manager under a new directory drivers/usb/typec/tcpm/ and
making Guenter Roeck the designated reviewer of that code.

Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: typec: fusb302: reorganizing the probe function a little
Heikki Krogerus [Thu, 20 Sep 2018 11:23:46 +0000 (14:23 +0300)]
usb: typec: fusb302: reorganizing the probe function a little

The debugfs needs to be initialized as the last step in
probe in this case. The struct dentry *rootdir can't be
pointing to anything unless driver probe really finishes
successfully.

It is also not necessary to clear the i2c clientdata if the
probe fails, so removing the extra label used for that.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoplatform: x86: intel_cht_int33fe: Remove the old connections for the muxes
Heikki Krogerus [Thu, 20 Sep 2018 11:23:45 +0000 (14:23 +0300)]
platform: x86: intel_cht_int33fe: Remove the old connections for the muxes

USB Type-C class driver now expects the muxes to be always
assigned to the ports and not controllers, so the
connections for the mux and fusb302 can be removed.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: typec: class: Don't use port parent for getting mux handles
Heikki Krogerus [Thu, 20 Sep 2018 11:23:44 +0000 (14:23 +0300)]
usb: typec: class: Don't use port parent for getting mux handles

It is not possible to use the parent of the port device when
requesting mux handles as the parent may be a multiport USB
Type-C or PD controller. The muxes must be assigned to the
ports, not the controllers.

This will also move the requesting of the muxes after the
port device is initialized.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoplatform: x86: intel_cht_int33fe: Add connections for the USB Type-C port
Heikki Krogerus [Thu, 20 Sep 2018 11:23:43 +0000 (14:23 +0300)]
platform: x86: intel_cht_int33fe: Add connections for the USB Type-C port

Assigning the mux to the USB Type-C port on top of fusb302.
That will prepare this driver for the change in the USB
Type-C class code, where the class driver will assume the
muxes to be always assigned to the ports and not the
controllers.

Once the USB Type-C class driver has been updated, the
connections between the mux and fusb302 can be dropped.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoplatform: x86: intel_cht_int33fe: Add connection for the DP alt mode
Heikki Krogerus [Thu, 20 Sep 2018 11:23:42 +0000 (14:23 +0300)]
platform: x86: intel_cht_int33fe: Add connection for the DP alt mode

Adding a connection for the DisplayPort alternate mode.
PI3USB30532 is used for muxing the port to DisplayPort on
CHT platforms. The connection allows the alternate mode
device to get handle to the mux, and therefore make it
possible to use the USB Type-C connector as DisplayPort.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoplatform: x86: intel_cht_int33fe: Register all connections at once
Heikki Krogerus [Thu, 20 Sep 2018 11:23:41 +0000 (14:23 +0300)]
platform: x86: intel_cht_int33fe: Register all connections at once

We can register all device connection descriptors with a
single call to device_connections_add().

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodrivers: base: Helpers for adding device connection descriptions
Heikki Krogerus [Thu, 20 Sep 2018 11:23:40 +0000 (14:23 +0300)]
drivers: base: Helpers for adding device connection descriptions

Introducing helpers for adding and removing multiple device
connection descriptions at once.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoplatform: x86: intel_cht_int33fe: Add dependency on muxes
Heikki Krogerus [Thu, 20 Sep 2018 11:23:39 +0000 (14:23 +0300)]
platform: x86: intel_cht_int33fe: Add dependency on muxes

The connections create clear dependency on the muxes.
fusb302 fails to probe unless we have the mux drivers
available.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: phy: mxs: fix spelling mistake "stardard" -> "standard"
Colin Ian King [Tue, 18 Sep 2018 06:54:11 +0000 (08:54 +0200)]
usb: phy: mxs: fix spelling mistake "stardard" -> "standard"

Trivial fix to spelling mistake in dev_dbg message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: host: fotg2: Fix potential NULL dereference
Linus Walleij [Tue, 18 Sep 2018 23:25:06 +0000 (16:25 -0700)]
usb: host: fotg2: Fix potential NULL dereference

There is code in the .remove() hook to handle the drvdata
being NULL, for good reasons: it is never set, so it will
always be NULL. As I moved code around, static checkers
start complaining.

Instead of this, make sure to always set it on successful
probe so we can always dereference it on the remove path.

Use the platform_device_[set|get]_drvdata() since this is
a platform device.

Fixes: ffa8a31b5b3b ("usb: host: fotg2: add silicon clock handling")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: renesas_usbhs: Add multiple clocks management
Yoshihiro Shimoda [Tue, 11 Sep 2018 08:47:05 +0000 (17:47 +0900)]
usb: renesas_usbhs: Add multiple clocks management

R-Car Gen3 needs to enable clocks of both host and peripheral.
Since [eo]hci-platform disables the reset(s) when the drivers are
removed, renesas_usbhs driver doesn't work correctly. To fix this
issue, this patch adds multiple clocks management on this
renesas_usbhs driver.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: usb: renesas_usbhs: add clock-names property
Yoshihiro Shimoda [Tue, 11 Sep 2018 08:47:04 +0000 (17:47 +0900)]
dt-bindings: usb: renesas_usbhs: add clock-names property

R-Car Gen3 needs to enable clocks of both host and peripheral.
Otherwise, other side device cannot work correctly. So, this patch
adds a property of clock-names for R-Car Gen3 as an optional.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: renesas_usbhs: Add reset_control
Yoshihiro Shimoda [Tue, 11 Sep 2018 08:47:03 +0000 (17:47 +0900)]
usb: renesas_usbhs: Add reset_control

R-Car Gen3 needs to deassert resets of both host and peripheral.
Since [eo]hci-platform is possible to assert the reset(s) when
the probing failed, renesas_usbhs driver doesn't work correctly
regardless of finished probing. To fix this issue, this patch adds
reset_control on this renesas_usbhs driver.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: usb: ohci: Add clocks description for R-Car Gen3
Yoshihiro Shimoda [Mon, 10 Sep 2018 11:15:48 +0000 (20:15 +0900)]
dt-bindings: usb: ohci: Add clocks description for R-Car Gen3

This patch adds detailed information of an optional property "clocks"
description for R-Car Gen3.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: usb: ehci: Add clocks description for R-Car Gen3
Yoshihiro Shimoda [Mon, 10 Sep 2018 11:15:47 +0000 (20:15 +0900)]
dt-bindings: usb: ehci: Add clocks description for R-Car Gen3

This patch adds detailed information of an optional property "clocks"
description for R-Car Gen3.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousbcore: Select UAC3 configuration for audio if present
Saranya Gopal [Wed, 12 Sep 2018 03:16:26 +0000 (08:46 +0530)]
usbcore: Select UAC3 configuration for audio if present

USB audio class 3.0 specification introduced many significant
changes like
 - new power domains, support for LPM/L1
 - new cluster descriptor
 - new high capability and class-specific string descriptors
 - BADD profiles
 - ... and many other things (check spec from link below:
http://www.usb.org/developers/docs/devclass_docs/USB_Audio_v3.0.zip)

Now that UAC3 is supported in linux, choose UAC3
configuration for audio if the device supports it.
Selecting this configuration will enable the system to
save power by leveraging the new power domains and LPM L1
capability and also support new codec types and data formats
for consumer audio applications.

Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
Reviewed-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: gadget: udc: renesas_usb3: Add r8a774a1 support
Fabrizio Castro [Fri, 24 Aug 2018 07:56:15 +0000 (08:56 +0100)]
usb: gadget: udc: renesas_usb3: Add r8a774a1 support

Document RZ/G2M (R8A774A1) SoC bindings.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: usb: renesas_usbhs: Add r8a774a1 support
Fabrizio Castro [Fri, 24 Aug 2018 07:56:14 +0000 (08:56 +0100)]
dt-bindings: usb: renesas_usbhs: Add r8a774a1 support

Document RZ/G2M (R8A774A1) SoC bindings.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: usb-xhci: Add r8a774a1 support
Fabrizio Castro [Fri, 24 Aug 2018 07:56:12 +0000 (08:56 +0100)]
dt-bindings: usb-xhci: Add r8a774a1 support

Document RZ/G2M (R8A774A1) SoC bindings.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: ehci-mv: add bindings
Lubomir Rintel [Wed, 22 Aug 2018 20:43:05 +0000 (22:43 +0200)]
dt-bindings: ehci-mv: add bindings

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoUSB: EHCI: ehci-mv: add DT support
Lubomir Rintel [Wed, 22 Aug 2018 20:43:04 +0000 (22:43 +0200)]
USB: EHCI: ehci-mv: add DT support

Add Device tree support.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoUSB: EHCI: ehci-mv: use phy-pxa-usb
Lubomir Rintel [Wed, 22 Aug 2018 20:43:01 +0000 (22:43 +0200)]
USB: EHCI: ehci-mv: use phy-pxa-usb

Use a proper PHY driver, instead of hooks to a board support package.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoUSB: EHCI: ehci-mv: remove private_init
Lubomir Rintel [Wed, 22 Aug 2018 20:43:00 +0000 (22:43 +0200)]
USB: EHCI: ehci-mv: remove private_init

It's unused.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoUSB: EHCI: make ehci-mv a separate driver
Lubomir Rintel [Wed, 22 Aug 2018 20:42:56 +0000 (22:42 +0200)]
USB: EHCI: make ehci-mv a separate driver

This is done do that it could be enabled alongside other platform EHCI
glue drivers on multiplatform kernels.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Remove sysfs group TermChar and auto_abort
Guido Kiener [Wed, 12 Sep 2018 08:51:12 +0000 (10:51 +0200)]
usb: usbtmc: Remove sysfs group TermChar and auto_abort

As all the properties of the usbtmc driver can now be
controlled on a per file descriptor basis by ioctl functions
the sysfs interface is of limited use.
We are not aware about applications that are using the sysfs
parameter TermChar, TermCharEnabled or auto_abort.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Fix split quoted string in debug message
Guido Kiener [Wed, 12 Sep 2018 08:51:11 +0000 (10:51 +0200)]
usb: usbtmc: Fix split quoted string in debug message

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Remove redundant macro USBTMC_SIZE_IOBUFFER
Guido Kiener [Wed, 12 Sep 2018 08:51:10 +0000 (10:51 +0200)]
usb: usbtmc: Remove redundant macro USBTMC_SIZE_IOBUFFER

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Remove redundant code
Guido Kiener [Wed, 12 Sep 2018 08:51:09 +0000 (10:51 +0200)]
usb: usbtmc: Remove redundant code

Remove redundant code and fix debug messages.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Update ioctl-number.txt
Guido Kiener [Wed, 12 Sep 2018 08:51:08 +0000 (10:51 +0200)]
usb: usbtmc: Update ioctl-number.txt

Reserve a suitable range of ioctl numbers for USBTMC driver.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl USBTMC_IOCTL_API_VERSION
Guido Kiener [Wed, 12 Sep 2018 08:51:07 +0000 (10:51 +0200)]
usb: usbtmc: Add ioctl USBTMC_IOCTL_API_VERSION

Add ioctl USBTMC_IOCTL_API_VERSION to get current API version
of usbtmc driver.

This is to allow an instrument library to determine whether
the driver API is compatible with the implementation.

The API may change in future versions. Therefore the macro
USBTMC_API_VERSION should be incremented when changing tmc.h
with new flags, ioctls or when changing a significant behavior
of the driver.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Replace USBTMC_TIMEOUT macros for control messages
Guido Kiener [Wed, 12 Sep 2018 08:51:06 +0000 (10:51 +0200)]
usb: usbtmc: Replace USBTMC_TIMEOUT macros for control messages

Use common timeout macro USB_CTRL_GET_TIMEOUT (=5s) for all
usb_control_msg() function calls.

The macro USBTMC_TIMEOUT should only be used as default value for
Bulk IN/OUT transfers.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Fix ioctl USBTMC_IOCTL_ABORT_BULK_OUT
Guido Kiener [Wed, 12 Sep 2018 08:51:05 +0000 (10:51 +0200)]
usb: usbtmc: Fix ioctl USBTMC_IOCTL_ABORT_BULK_OUT

Add parameter 'tag' to function usbtmc_ioctl_abort_bulk_out_tag()
for future versions.

Use USBTMC_BUFSIZE (4k) instead of USBTMC_SIZE_IOBUFFER (2k).
Using USBTMC_SIZE_IOBUFFER is deprecated.

Insert a sleep of 50 ms between subsequent
CHECK_ABORT_BULK_OUT_STATUS control requests to avoid stressing
the instrument with repeated requests.

Use common macro USB_CTRL_GET_TIMEOUT instead of USBTMC_TIMEOUT.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Fix ioctl USBTMC_IOCTL_ABORT_BULK_IN
Guido Kiener [Wed, 12 Sep 2018 08:51:04 +0000 (10:51 +0200)]
usb: usbtmc: Fix ioctl USBTMC_IOCTL_ABORT_BULK_IN

Add parameter 'tag' to function usbtmc_ioctl_abort_bulk_in_tag()
for future versions.

Remove calculation of max_size (=wMaxPacketSize) and wrong
condition (actual == max_size) in while loop. An abort operation
should always flush the complete Bulk-IN until a short packet is
received.

Return error code ENOMSG when transfer (specified by given tag)
is not in progress and device returns code
USBTMC_STATUS_TRANSFER_NOT_IN_PROGRESS.

Use USBTMC_BUFSIZE (4k) instead of USBTMC_SIZE_IOBUFFER (2k).
Using USBTMC_SIZE_IOBUFFER is deprecated.

Use common macro USB_CTRL_GET_TIMEOUT instead of USBTMC_TIMEOUT.

Check only bit 0 (field bmAbortBulkIn) of the
CHECK_ABORT_BULK_IN_STATUS response, since other bits are reserved
and can change in future versions.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Fix ioctl USBTMC_IOCTL_CLEAR
Guido Kiener [Wed, 12 Sep 2018 08:51:03 +0000 (10:51 +0200)]
usb: usbtmc: Fix ioctl USBTMC_IOCTL_CLEAR

Remove calculation of max_size (=wMaxPacketSize) and wrong
condition (actual == max_size) in while loop. A device clear
should always flush the complete Bulk-IN FIFO.

Insert a sleep of 50 ms between subsequent CHECK_CLEAR_STATUS
control requests to avoid stressing the instrument with
repeated requests.

Some instruments need time to cleanup internal I/O buffers.
Polling and nonbraked requests slow down the response time of
devices.

Use USBTMC_BUFSIZE (4k) instead of USBTMC_SIZE_IOBUFFER (2k).
Using USBTMC_SIZE_IOBUFFER is deprecated.

Check only bit 0 (field bmClear) of the CHECK_CLEAR_STATUS
response, since other bits are reserved and can change in
future versions.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Optimize usbtmc_read
Guido Kiener [Wed, 12 Sep 2018 08:51:02 +0000 (10:51 +0200)]
usb: usbtmc: Optimize usbtmc_read

Use new usbtmc_generic_read function to maximize bandwidth
during long data transfer. Also fix reading of zero length
packet (ZLP) or trailing short packet.
The maximum input transfer size is limited to INT_MAX (=2GB).
Also remove redundant return in send_request_dev_dep_msg_in().

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Optimize usbtmc_write
Guido Kiener [Wed, 12 Sep 2018 08:51:01 +0000 (10:51 +0200)]
usb: usbtmc: Optimize usbtmc_write

Use new usbtmc_generic_write function to maximize bandwidth
during long data transfer.
The maximum output transfer size is limited to INT_MAX (=2GB).

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl USBTMC_IOCTL_AUTO_ABORT
Guido Kiener [Wed, 12 Sep 2018 08:51:00 +0000 (10:51 +0200)]
usb: usbtmc: Add ioctl USBTMC_IOCTL_AUTO_ABORT

Add ioctl USBTMC_IOCTL_AUTO_ABORT to configure auto_abort for
each specific file handle.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: add ioctl USBTMC_IOCTL_MSG_IN_ATTR
Guido Kiener [Wed, 12 Sep 2018 08:50:59 +0000 (10:50 +0200)]
usb: usbtmc: add ioctl USBTMC_IOCTL_MSG_IN_ATTR

add ioctl USBTMC_IOCTL_MSG_IN_ATTR that returns the specific
bmTransferAttributes field of the last DEV_DEP_MSG_IN Bulk-IN
header. This header is received by the read() function. The
meaning of the (u8) bitmap bmTransferAttributes is:

Bit 0 = EOM flag is set when the last transfer of a USBTMC
message is received.

Bit 1 = is set when the last byte is a termchar (e.g. '\n').
Note that this bit is always zero when the device does not support
the termchar feature or when termchar detection is not enabled
(see ioctl USBTMC_IOCTL_CONFIG_TERMCHAR).

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl USBTMC488_IOCTL_WAIT_SRQ
Guido Kiener [Wed, 12 Sep 2018 08:50:58 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl USBTMC488_IOCTL_WAIT_SRQ

Wait until an SRQ (service request) is received on the interrupt pipe
or until the given period of time is expired. In contrast to the
poll() function this ioctl does not return when other (a)synchronous
I/O operations fail with EPOLLERR.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Fix suspend/resume
Guido Kiener [Wed, 12 Sep 2018 08:50:57 +0000 (10:50 +0200)]
usb: usbtmc: Fix suspend/resume

Submitted urbs are not allowed when system is suspended.
Thus the submitted urb waiting at interrupt pipe is killed
during suspend callback and submitted again when system resumes.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl USBTMC_IOCTL_CLEANUP_IO
Guido Kiener [Wed, 12 Sep 2018 08:50:56 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl USBTMC_IOCTL_CLEANUP_IO

The ioctl USBTMC_IOCTL_CLEANUP_IO kills all submitted urbs to OUT
and IN bulk, and clears all received data from IN bulk. Internal
transfer counters and error states are reset.

An application should use this ioctl after an asnychronous transfer
was canceled and/or error handling has finished.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl USBTMC_IOCTL_CANCEL_IO
Guido Kiener [Wed, 12 Sep 2018 08:50:55 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl USBTMC_IOCTL_CANCEL_IO

ioctl USBTMC_IOCTL_CANCEL_IO stops and kills all flying urbs of
last USBTMC_IOCTL_READ and USBTMC_IOCTL_WRITE function calls.
A subsequent call to USBTMC_IOCTL_READ or
USBTMC_IOCTL_WRITE_RESULT returns -ECANCELED with
information about current transferred data.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl for vendor specific read
Guido Kiener [Wed, 12 Sep 2018 08:50:54 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl for vendor specific read

The USBTMC_IOCTL_READ call provides for generic synchronous and
asynchronous reads on bulk IN to implement vendor specific library
routines.

Depending on transfer_size the function submits one or more urbs (up
to 16) each with a size of up to 4kB.

The flag USBTMC_FLAG_IGNORE_TRAILER can be used when the transmission
size is already known. Then the function does not truncate the
transfer_size to a multiple of 4 kB, but does reserve extra space
to receive the final short or zero length packet. Note that the
instrument is allowed to send up to wMaxPacketSize - 1 bytes at the
end of a message to avoid sending a zero length packet.

With flag USBTMC_FLAG_ASYNC the ioctl is non blocking. When no
received data is available, the read function submits as many urbs as
needed to receive transfer_size bytes. However the number of flying
urbs (=4kB) is limited to 16 even with subsequent calls of this ioctl.

Returns -EAGAIN when non blocking and no data is received.
Signals EPOLLIN | EPOLLRDNORM when asynchronous urbs are ready to
be read.

In non blocking mode the usbtmc_message.message pointer may be NULL
and the ioctl just submits urbs to initiate receiving data. However if
data is already available due to a previous non blocking call the ioctl
will return -EINVAL when the message pointer is NULL.

This ioctl does not support compatibility for 32 bit
applications running on 64 bit systems. However all other
convenient ioctls of the USBTMC driver can still be used in 32
bit applications as well. Note that 32 bit applications running
on 32 bit target systems are not affected by this limitation.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl USBTMC_IOCTL_WRITE_RESULT
Guido Kiener [Wed, 12 Sep 2018 08:50:53 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl USBTMC_IOCTL_WRITE_RESULT

ioctl USBTMC_IOCTL_WRITE_RESULT copies current out_transfer_size
to given __u32 pointer and returns current out_status of the last
(asnynchronous) USBTMC_IOCTL_WRITE call.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl for vendor specific write
Guido Kiener [Wed, 12 Sep 2018 08:50:52 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl for vendor specific write

The new ioctl USBTMC_IOCTL_WRITE sends a generic message to bulk OUT.
This ioctl is used for vendor specific or asynchronous I/O as well.

The message is split into chunks of 4k (page size).
Message size is aligned to 32 bit boundaries.

With flag USBTMC_FLAG_ASYNC the ioctl is non blocking.
With flag USBTMC_FLAG_APPEND additional urbs are queued and
out_status/out_transfer_size is not reset. EPOLLOUT | EPOLLWRNORM
is signaled when all submitted urbs are completed.

Flush flying urbs when file handle is closed or device is
suspended or reset.

This ioctl does not support compatibility for 32 bit
applications running on 64 bit systems. However all other
convenient ioctls of the USBTMC driver can still be used in 32
bit applications as well. Note that 32 bit applications running
on 32 bit target systems are not affected by this limitation.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: usbtmc: Add ioctl for generic requests on control
Guido Kiener [Wed, 12 Sep 2018 08:50:51 +0000 (10:50 +0200)]
usb: usbtmc: Add ioctl for generic requests on control

Add USBTMC_IOCTL_CTRL_REQUEST to send arbitrary requests on the
control pipe.  Used by specific applications of IVI Foundation,
Inc. to implement VISA API functions: viUsbControlIn/Out.

The maximum length of control request is set to 4k.

This ioctl does not support compatibility for 32 bit
applications running on 64 bit systems. However all other
convenient ioctls of the USBTMC driver can still be used in 32
bit applications as well. Note that 32 bit applications running
on 32 bit target systems are not affected by this limitation.

Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agousb: typec: fusb302: Populate tcpc fwnode for TCPM property handling
Adam Thomson [Tue, 21 Aug 2018 12:28:23 +0000 (13:28 +0100)]
usb: typec: fusb302: Populate tcpc fwnode for TCPM property handling

This update populates the tcpc handle's fwnode pointer with the
child usb-connector node, if it exists, so that TCPM can perform
generic property handling to define the ports capabilities.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: usb: fusb302: Use usb-connector bindings for configuration
Adam Thomson [Tue, 21 Aug 2018 12:28:22 +0000 (13:28 +0100)]
dt-bindings: usb: fusb302: Use usb-connector bindings for configuration

There are now generic usb-connector bindings which can be used
to define a port controllers configuration for USB-PD, so device
specific bindings are no longer necessary.

This update deprecates 'fcs,operating-sink-microwatt', and references
the 'usb-connector' bindings instead to achieve the required port
config.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agodt-bindings: connector: Add support for USB-PD PPS APDOs to bindings
Adam Thomson [Tue, 21 Aug 2018 12:28:21 +0000 (13:28 +0100)]
dt-bindings: connector: Add support for USB-PD PPS APDOs to bindings

Add support for PPS APDOs to connector bindings so a port controller
can specify support for PPS, as per existing FIXED/BATT/VAR PDOs.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoMerge 4.19-rc4 into usb-next
Greg Kroah-Hartman [Sun, 16 Sep 2018 20:44:14 +0000 (22:44 +0200)]
Merge 4.19-rc4 into usb-next

We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
6 years agoLinux 4.19-rc4
Linus Torvalds [Sun, 16 Sep 2018 18:52:37 +0000 (11:52 -0700)]
Linux 4.19-rc4

6 years agoCode of Conduct: Let's revamp it.
Greg Kroah-Hartman [Sat, 15 Sep 2018 18:26:44 +0000 (20:26 +0200)]
Code of Conduct: Let's revamp it.

The Code of Conflict is not achieving its implicit goal of fostering
civility and the spirit of 'be excellent to each other'.  Explicit
guidelines have demonstrated success in other projects and other areas
of the kernel.

Here is a Code of Conduct statement for the wider kernel.  It is based
on the Contributor Covenant as described at www.contributor-covenant.org

From this point forward, we should abide by these rules in order to help
make the kernel community a welcoming environment to participate in.

Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Olof Johansson <olof@lxom.net>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 18:02:46 +0000 (08:02 -1000)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingol Molnar:
 "Misc fixes:

   - EFI crash fix

   - Xen PV fixes

   - do not allow PTI on 2-level 32-bit kernels for now

   - documentation fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/APM: Fix build warning when PROC_FS is not enabled
  Revert "x86/mm/legacy: Populate the user page-table with user pgd's"
  x86/efi: Load fixmap GDT in efi_call_phys_epilog() before setting %cr3
  x86/xen: Disable CPU0 hotplug for Xen PV
  x86/EISA: Don't probe EISA bus for Xen PV guests
  x86/doc: Fix Documentation/x86/earlyprintk.txt

6 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 18:00:37 +0000 (08:00 -1000)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes: various scheduler metrics corner case fixes, a
  sched_features deadlock fix, and a topology fix for certain NUMA
  systems"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix kernel-doc notation warning
  sched/fair: Fix load_balance redo for !imbalance
  sched/fair: Fix scale_rt_capacity() for SMT
  sched/fair: Fix vruntime_normalized() for remote non-migration wakeup
  sched/pelt: Fix update_blocked_averages() for RT and DL classes
  sched/topology: Set correct NUMA topology type
  sched/debug: Fix potential deadlock when writing to sched_features

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 16:44:32 +0000 (06:44 -1000)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, but also breakpoint and x86 PMU driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  perf tools: Fix maps__find_symbol_by_name()
  tools headers uapi: Update tools's copy of linux/if_link.h
  tools headers uapi: Update tools's copy of linux/vhost.h
  tools headers uapi: Update tools's copies of kvm headers
  tools headers uapi: Update tools's copy of drm/drm.h
  tools headers uapi: Update tools's copy of asm-generic/unistd.h
  tools headers uapi: Update tools's copy of linux/perf_event.h
  perf/core: Force USER_DS when recording user stack data
  perf/UAPI: Clearly mark __PERF_SAMPLE_CALLCHAIN_EARLY as internal use
  perf/x86/intel: Add support/quirk for the MISPREDICT bit on Knights Landing CPUs
  perf annotate: Fix parsing aarch64 branch instructions after objdump update
  perf probe powerpc: Ignore SyS symbols irrespective of endianness
  perf event-parse: Use fixed size string for comms
  perf util: Fix bad memory access in trace info.
  perf tools: Streamline bpf examples and headers installation
  perf evsel: Fix potential null pointer dereference in perf_evsel__new_idx()
  perf arm64: Fix include path for asm-generic/unistd.h
  perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint
  perf/hw_breakpoint: Enable breakpoint in modify_user_hw_breakpoint
  perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0
  ...

6 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 16:39:09 +0000 (06:39 -1000)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "Misc fixes: liblockdep fixes and ww_mutex fixes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/ww_mutex: Fix spelling mistake "cylic" -> "cyclic"
  locking/lockdep: Delete unnecessary #include
  tools/lib/lockdep: Add dummy task_struct state member
  tools/lib/lockdep: Add empty nmi.h
  tools/lib/lockdep: Update Sasha Levin email to MSFT
  jump_label: Fix typo in warning message
  locking/mutex: Fix mutex debug call and ww_mutex documentation

6 years agox86/APM: Fix build warning when PROC_FS is not enabled
Randy Dunlap [Fri, 14 Sep 2018 22:10:29 +0000 (15:10 -0700)]
x86/APM: Fix build warning when PROC_FS is not enabled

Fix build warning in apm_32.c when CONFIG_PROC_FS is not enabled:

../arch/x86/kernel/apm_32.c:1643:12: warning: 'proc_apm_show' defined but not used [-Wunused-function]
 static int proc_apm_show(struct seq_file *m, void *v)

Fixes: 3f3942aca6da ("proc: introduce proc_create_single{,_data}")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jiri Kosina <jikos@kernel.org>
Link: https://lkml.kernel.org/r/be39ac12-44c2-4715-247f-4dcc3c525b8b@infradead.org
6 years agoMerge tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 15 Sep 2018 05:33:42 +0000 (19:33 -1000)]
Merge tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Fixes for four CIFS/SMB3 potential pointer overflow issues, one minor
  build fix, and a build warning cleanup"

* tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: read overflow in is_valid_oplock_break()
  cifs: integer overflow in in SMB2_ioctl()
  CIFS: fix wrapping bugs in num_entries()
  cifs: prevent integer overflow in nxt_dir_entry()
  fs/cifs: require sha512
  fs/cifs: suppress a string overflow warning

6 years agoMerge tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Sat, 15 Sep 2018 05:25:28 +0000 (19:25 -1000)]
Merge tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client bugfixes from Anna Schumaker:
 "These are a handful of fixes for problems that Trond found. Patch #1
  and #3 have the same name, a second issue was found after applying the
  first patch.

  Stable bugfixes:
   - v4.17+: Fix tracepoint Oops in initiate_file_draining()
   - v4.11+: Fix an infinite loop on I/O

  Other fixes:
   - Return errors if a waiting layoutget is killed
   - Don't open code clearing of delegation state"

* tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: Don't open code clearing of delegation state
  NFSv4.1 fix infinite loop on I/O.
  NFSv4: Fix a tracepoint Oops in initiate_file_draining()
  pNFS: Ensure we return the error if someone kills a waiting layoutget
  NFSv4: Fix a tracepoint Oops in initiate_file_draining()

6 years agoMerge tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Sat, 15 Sep 2018 03:31:02 +0000 (17:31 -1000)]
Merge tag 'trace-v4.19-rc3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "This fixes an issue with the build system caused by a change that
  modifies CC_FLAGS_FTRACE. The issue is that it breaks the dependencies
  and causes "make targz-pkg" to rebuild the entire world"

* tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/Makefile: Fix handling redefinition of CC_FLAGS_FTRACE

6 years agoMerge tag 'devicetree-fixes-for-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 Sep 2018 23:03:17 +0000 (13:03 -1000)]
Merge tag 'devicetree-fixes-for-4.19-2' of git://git./linux/kernel/git/robh/linux

Pull DeviceTree fix from Rob Herring:
 "One regression for a 20 year old PowerMac:

   - Fix a regression on systems having a DT without any phandles which
     happens on a PowerMac G3"

* tag 'devicetree-fixes-for-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: fix phandle cache creation for DTs with no phandles

6 years agoMerge tag 'for-linus-4.19c-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 Sep 2018 23:01:06 +0000 (13:01 -1000)]
Merge tag 'for-linus-4.19c-rc4-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "This contains some minor cleanups and fixes:

   - a new knob for controlling scrubbing of pages returned by the Xen
     balloon driver to the Xen hypervisor to address a boot performance
     issue seen in large guests booted pre-ballooned

   - a fix of a regression in the gntdev driver which made it impossible
     to use fully virtualized guests (HVM guests) with a 4.19 based dom0

   - a fix in Xen cpu hotplug functionality which could be triggered by
     wrong admin commands (setting number of active vcpus to 0)

  One further note: the patches have all been under test for several
  days in another branch. This branch has been rebased in order to avoid
  merge conflicts"

* tag 'for-linus-4.19c-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/gntdev: fix up blockable calls to mn_invl_range_start
  xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage
  xen: avoid crash in disable_hotplug_cpu
  xen/balloon: add runtime control for scrubbing ballooned out pages
  xen/manage: don't complain about an empty value in control/sysrq node

6 years agoMerge tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa
Linus Torvalds [Fri, 14 Sep 2018 22:56:42 +0000 (12:56 -1000)]
Merge tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa fixes and cleanups from Max Filippov:

 - don't allocate memory in platform_setup as the memory allocator is
   not initialized at that point yet;

 - remove unnecessary ifeq KBUILD_SRC from arch/xtensa/Makefile;

 - enable SG chaining in arch/xtensa/Kconfig.

* tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: enable SG chaining in Kconfig
  xtensa: remove unnecessary KBUILD_SRC ifeq conditional
  xtensa: ISS: don't allocate memory in platform_setup

6 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 14 Sep 2018 22:42:02 +0000 (12:42 -1000)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The trickle of arm64 fixes continues to come in.

  Nothing that's the end of the world, but we've got a fix for PCI IO
  port accesses, an accidental naked "asm goto" and a fix to the
  vmcoreinfo PT_NOTE merged this time around which we'd like to get
  sorted before it becomes ABI.

   - Fix ioport_map() mapping the wrong physical address for some I/O
     BARs

   - Remove direct use of "asm goto", since some compilers don't like
     that

   - Ensure kimage_voffset is always present in vmcoreinfo PT_NOTE"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  asm-generic: io: Fix ioport_map() for !CONFIG_GENERIC_IOMAP && CONFIG_INDIRECT_PIO
  arm64: kernel: arch_crash_save_vmcoreinfo() should depend on CONFIG_CRASH_CORE
  arm64: jump_label.h: use asm_volatile_goto macro instead of "asm goto"

6 years agoNFS: Don't open code clearing of delegation state
Trond Myklebust [Wed, 5 Sep 2018 18:07:15 +0000 (14:07 -0400)]
NFS: Don't open code clearing of delegation state

Add a helper for the case when the nfs4 open state has been set to use
a delegation stateid, and we want to revert to using the open stateid.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
6 years agoNFSv4.1 fix infinite loop on I/O.
Trond Myklebust [Wed, 5 Sep 2018 18:07:14 +0000 (14:07 -0400)]
NFSv4.1 fix infinite loop on I/O.

The previous fix broke recovery of delegated stateids because it assumes
that if we did not mark the delegation as suspect, then the delegation has
effectively been revoked, and so it removes that delegation irrespectively
of whether or not it is valid and still in use. While this is "mostly
harmless" for ordinary I/O, we've seen pNFS fail with LAYOUTGET spinning
in an infinite loop while complaining that we're using an invalid stateid
(in this case the all-zero stateid).

What we rather want to do here is ensure that the delegation is always
correctly marked as needing testing when that is the case. So we want
to close the loophole offered by nfs4_schedule_stateid_recovery(),
which marks the state as needing to be reclaimed, but not the
delegation that may be backing it.

Fixes: 0e3d3e5df07dc ("NFSv4.1 fix infinite loop on IO BAD_STATEID error")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
6 years agoNFSv4: Fix a tracepoint Oops in initiate_file_draining()
Trond Myklebust [Wed, 5 Sep 2018 18:07:13 +0000 (14:07 -0400)]
NFSv4: Fix a tracepoint Oops in initiate_file_draining()

Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to
change the test in the tracepoint.

Fixes: ce5624f7e6675 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
6 years agopNFS: Ensure we return the error if someone kills a waiting layoutget
Trond Myklebust [Wed, 5 Sep 2018 18:07:12 +0000 (14:07 -0400)]
pNFS: Ensure we return the error if someone kills a waiting layoutget

If someone interrupts a wait on one or more outstanding layoutgets in
pnfs_update_layout() then return the ERESTARTSYS/EINTR error.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
6 years agoNFSv4: Fix a tracepoint Oops in initiate_file_draining()
Trond Myklebust [Thu, 23 Aug 2018 15:02:49 +0000 (11:02 -0400)]
NFSv4: Fix a tracepoint Oops in initiate_file_draining()

Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to
change the test in the tracepoint.

Fixes: ce5624f7e6675 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
6 years agoMerge tag 'dmaengine-fix-4.19-rc4' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 14 Sep 2018 16:08:40 +0000 (06:08 -1000)]
Merge tag 'dmaengine-fix-4.19-rc4' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fix from Vinod Koul:
 "Fix the mic_x100_dma driver to use devm_kzalloc for driver memory, so
  that it is freed properly when it unregisters from dmaengine using
  managed API"

* tag 'dmaengine-fix-4.19-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: mic_x100_dma: use devm_kzalloc to fix an issue

6 years agoMerge tag 'usb-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 14 Sep 2018 15:59:48 +0000 (05:59 -1000)]
Merge tag 'usb-4.19-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of small USB driver fixes for -rc4.

  The usual suspects of gadget, xhci, and dwc2/3 are in here, along with
  some reverts of reported problem changes, and a number of build
  documentation warning fixes. Full details are in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (28 commits)
  Revert "cdc-acm: implement put_char() and flush_chars()"
  usb: Change usb_of_get_companion_dev() place to usb/common
  usb: xhci: fix interrupt transfer error happened on MTK platforms
  usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()
  usb: misc: uss720: Fix two sleep-in-atomic-context bugs
  usb: host: u132-hcd: Fix a sleep-in-atomic-context bug in u132_get_frame()
  usb: Avoid use-after-free by flushing endpoints early in usb_set_interface()
  linux/mod_devicetable.h: fix kernel-doc missing notation for typec_device_id
  usb/typec: fix kernel-doc notation warning for typec_match_altmode
  usb: Don't die twice if PCI xhci host is not responding in resume
  usb: mtu3: fix error of xhci port id when enable U3 dual role
  usb: uas: add support for more quirk flags
  USB: Add quirk to support DJI CineSSD
  usb: typec: fix kernel-doc parameter warning
  usb/dwc3/gadget: fix kernel-doc parameter warning
  USB: yurex: Check for truncation in yurex_read()
  USB: yurex: Fix buffer over-read in yurex_write()
  usb: host: xhci-plat: Iterate over parent nodes for finding quirks
  xhci: Fix use after free for URB cancellation on a reallocated endpoint
  USB: add quirk for WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
  ...

6 years agoMerge tag 'tty-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Fri, 14 Sep 2018 15:58:12 +0000 (05:58 -1000)]
Merge tag 'tty-4.19-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty fixes from Greg KH:
 "Here are three small HVC tty driver fixes to resolve a reported
  regression from 4.19-rc1.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: hvc: hvc_write() fix break condition
  tty: hvc: hvc_poll() fix read loop batching
  tty: hvc: hvc_poll() fix read loop hang

6 years agoMerge tag 'staging-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 14 Sep 2018 15:43:43 +0000 (05:43 -1000)]
Merge tag 'staging-4.19-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging/IIO driver fixes from Greg KH:
 "Here are a few small staging and iio driver fixes for -rc4.

  Nothing major, just a few small bugfixes for some reported issues, and
  a MAINTAINERS file update for the fbtft drivers.

  We also re-enable the building of the erofs filesystem as the XArray
  patches that were causing it to break never got merged in the -rc1
  cycle, so there's no reason it can't be turned back on for now. The
  problem that was previously there is now being handled in the Xarray
  tree at the moment, so it will not hit us again in the future.

  All of these patches have been in linux-next with no reported issues"

* tag 'staging-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: vboxvideo: Change address of scanout buffer on page-flip
  staging: vboxvideo: Fix IRQs no longer working
  staging: gasket: TODO: re-implement using UIO
  staging/fbtft: Update TODO and mailing lists
  staging: erofs: rename superblock flags (MS_xyz -> SB_xyz)
  iio: imu: st_lsm6dsx: take into account ts samples in wm configuration
  Revert "iio: temperature: maxim_thermocouple: add MAX31856 part"
  Revert "staging: erofs: disable compiling temporarile"
  MAINTAINERS: Switch a maintainer for drivers/staging/gasket
  staging: wilc1000: revert "fix TODO to compile spi and sdio components in single module"

6 years agoMerge tag 'char-misc-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Fri, 14 Sep 2018 15:40:13 +0000 (05:40 -1000)]
Merge tag 'char-misc-4.19-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are a small handful of char/misc driver fixes for 4.19-rc4.

  All of them are simple, resolving reported problems in a few drivers.
  Full details are in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  firmware: Fix security issue with request_firmware_into_buf()
  vmbus: don't return values for uninitalized channels
  fpga: dfl: fme: fix return value check in in pr_mgmt_init()
  misc: hmc6352: fix potential Spectre v1
  Tools: hv: Fix a bug in the key delete code
  misc: ibmvsm: Fix wrong assignment of return code
  android: binder: fix the race mmap and alloc_new_buf_locked
  mei: bus: need to unlink client before freeing
  mei: bus: fix hw module get/put balance
  mei: fix use-after-free in mei_cl_write
  mei: ignore not found client in the enumeration

6 years agoRevert "x86/mm/legacy: Populate the user page-table with user pgd's"
Joerg Roedel [Fri, 14 Sep 2018 10:59:14 +0000 (12:59 +0200)]
Revert "x86/mm/legacy: Populate the user page-table with user pgd's"

This reverts commit 1f40a46cf47c12d93a5ad9dccd82bd36ff8f956a.

It turned out that this patch is not sufficient to enable PTI on 32 bit
systems with legacy 2-level page-tables. In this paging mode the huge-page
PTEs are in the top-level page-table directory, where also the mirroring to
the user-space page-table happens. So every huge PTE exits twice, in the
kernel and in the user page-table.

That means that accessed/dirty bits need to be fetched from two PTEs in
this mode to be safe, but this is not trivial to implement because it needs
changes to generic code just for the sake of enabling PTI with 32-bit
legacy paging. As all systems that need PTI should support PAE anyway,
remove support for PTI when 32-bit legacy paging is used.

Fixes: 7757d607c6b3 ('x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32')
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: hpa@zytor.com
Cc: linux-mm@kvack.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Link: https://lkml.kernel.org/r/1536922754-31379-1-git-send-email-joro@8bytes.org
6 years agoxen/gntdev: fix up blockable calls to mn_invl_range_start
Michal Hocko [Tue, 4 Sep 2018 23:21:39 +0000 (09:21 +1000)]
xen/gntdev: fix up blockable calls to mn_invl_range_start

Patch series "mmu_notifiers follow ups".

Tetsuo has noticed some fallouts from 93065ac753e4 ("mm, oom: distinguish
blockable mode for mmu notifiers").  One of them has been fixed and picked
up by AMD/DRM maintainer [1].  XEN issue is fixed by patch 1.  I have also
clarified expectations about blockable semantic of invalidate_range_end.
Finally the last patch removes MMU_INVALIDATE_DOES_NOT_BLOCK which is no
longer used nor needed.

[1] http://lkml.kernel.org/r/20180824135257.GU29735@dhcp22.suse.cz

This patch (of 3):

93065ac753e4 ("mm, oom: distinguish blockable mode for mmu notifiers") has
introduced blockable parameter to all mmu_notifiers and the notifier has
to back off when called in !blockable case and it could block down the
road.

The above commit implemented that for mn_invl_range_start but both
in_range checks are done unconditionally regardless of the blockable mode
and as such they would fail all the time for regular calls.  Fix this by
checking blockable parameter as well.

Once we are there we can remove the stale TODO.  The lock has to be
sleepable because we wait for completion down in gnttab_unmap_refs_sync.

Link: http://lkml.kernel.org/r/20180827112623.8992-2-mhocko@kernel.org
Fixes: 93065ac753e4 ("mm, oom: distinguish blockable mode for mmu notifiers")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
6 years agoxen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage
Josh Abraham [Thu, 13 Sep 2018 01:13:54 +0000 (15:13 -1000)]
xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage

This patch removes duplicate macro useage in events_base.c.

It also fixes gcc warning:
variable ‘col’ set but not used [-Wunused-but-set-variable]

Signed-off-by: Joshua Abraham <j.abraham1776@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
6 years agoxen: avoid crash in disable_hotplug_cpu
Olaf Hering [Fri, 7 Sep 2018 14:31:35 +0000 (16:31 +0200)]
xen: avoid crash in disable_hotplug_cpu

The command 'xl vcpu-set 0 0', issued in dom0, will crash dom0:

BUG: unable to handle kernel NULL pointer dereference at 00000000000002d8
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 7 PID: 65 Comm: xenwatch Not tainted 4.19.0-rc2-1.ga9462db-default #1 openSUSE Tumbleweed (unreleased)
Hardware name: Intel Corporation S5520UR/S5520UR, BIOS S5500.86B.01.00.0050.050620101605 05/06/2010
RIP: e030:device_offline+0x9/0xb0
Code: 77 24 00 e9 ce fe ff ff 48 8b 13 e9 68 ff ff ff 48 8b 13 e9 29 ff ff ff 48 8b 13 e9 ea fe ff ff 90 66 66 66 66 90 41 54 55 53 <f6> 87 d8 02 00 00 01 0f 85 88 00 00 00 48 c7 c2 20 09 60 81 31 f6
RSP: e02b:ffffc90040f27e80 EFLAGS: 00010203
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8801f3800000 RSI: ffffc90040f27e70 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff820e47b3 R09: 0000000000000000
R10: 0000000000007ff0 R11: 0000000000000000 R12: ffffffff822e6d30
R13: dead000000000200 R14: dead000000000100 R15: ffffffff8158b4e0
FS:  00007ffa595158c0(0000) GS:ffff8801f39c0000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000002d8 CR3: 00000001d9602000 CR4: 0000000000002660
Call Trace:
 handle_vcpu_hotplug_event+0xb5/0xc0
 xenwatch_thread+0x80/0x140
 ? wait_woken+0x80/0x80
 kthread+0x112/0x130
 ? kthread_create_worker_on_cpu+0x40/0x40
 ret_from_fork+0x3a/0x50

This happens because handle_vcpu_hotplug_event is called twice. In the
first iteration cpu_present is still true, in the second iteration
cpu_present is false which causes get_cpu_device to return NULL.
In case of cpu#0, cpu_online is apparently always true.

Fix this crash by checking if the cpu can be hotplugged, which is false
for a cpu that was just removed.

Also check if the cpu was actually offlined by device_remove, otherwise
leave the cpu_present state as it is.

Rearrange to code to do all work with device_hotplug_lock held.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
6 years agoxen/balloon: add runtime control for scrubbing ballooned out pages
Marek Marczykowski-Górecki [Fri, 7 Sep 2018 16:49:08 +0000 (18:49 +0200)]
xen/balloon: add runtime control for scrubbing ballooned out pages

Scrubbing pages on initial balloon down can take some time, especially
in nested virtualization case (nested EPT is slow). When HVM/PVH guest is
started with memory= significantly lower than maxmem=, all the extra
pages will be scrubbed before returning to Xen. But since most of them
weren't used at all at that point, Xen needs to populate them first
(from populate-on-demand pool). In nested virt case (Xen inside KVM)
this slows down the guest boot by 15-30s with just 1.5GB needed to be
returned to Xen.

Add runtime parameter to enable/disable it, to allow initially disabling
scrubbing, then enable it back during boot (for example in initramfs).
Such usage relies on assumption that a) most pages ballooned out during
initial boot weren't used at all, and b) even if they were, very few
secrets are in the guest at that time (before any serious userspace
kicks in).
Convert CONFIG_XEN_SCRUB_PAGES to CONFIG_XEN_SCRUB_PAGES_DEFAULT (also
enabled by default), controlling default value for the new runtime
switch.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
6 years agoxen/manage: don't complain about an empty value in control/sysrq node
Vitaly Kuznetsov [Thu, 6 Sep 2018 11:26:08 +0000 (13:26 +0200)]
xen/manage: don't complain about an empty value in control/sysrq node

When guest receives a sysrq request from the host it acknowledges it by
writing '\0' to control/sysrq xenstore node. This, however, make xenstore
watch fire again but xenbus_scanf() fails to parse empty value with "%c"
format string:

 sysrq: SysRq : Emergency Sync
 Emergency Sync complete
 xen:manage: Error -34 reading sysrq code in control/sysrq

Ignore -ERANGE the same way we already ignore -ENOENT, empty value in
control/sysrq is totally legal.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
6 years agoasm-generic: io: Fix ioport_map() for !CONFIG_GENERIC_IOMAP && CONFIG_INDIRECT_PIO
Andrew Murray [Thu, 13 Sep 2018 12:48:27 +0000 (13:48 +0100)]
asm-generic: io: Fix ioport_map() for !CONFIG_GENERIC_IOMAP && CONFIG_INDIRECT_PIO

The !CONFIG_GENERIC_IOMAP version of ioport_map uses MMIO_UPPER_LIMIT to
prevent users from making I/O accesses outside the expected I/O range -
however it erroneously treats MMIO_UPPER_LIMIT as a mask which is
contradictory to its other users.

The introduction of CONFIG_INDIRECT_PIO, which subtracts an arbitrary
amount from IO_SPACE_LIMIT to form MMIO_UPPER_LIMIT, results in ioport_map
mangling the given port rather than capping it.

We address this by aligning more closely with the CONFIG_GENERIC_IOMAP
implementation of ioport_map by using the comparison operator and
returning NULL where the port exceeds MMIO_UPPER_LIMIT. Though note that
we preserve the existing behavior of masking with IO_SPACE_LIMIT such that
we don't break existing buggy drivers that somehow rely on this masking.

Fixes: 5745392e0c2b ("PCI: Apply the new generic I/O management on PCI IO hosts")
Reported-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>