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1740 Commits (redonkable)

Author SHA1 Message Date
Peter Chen 6285bee2a8 MLK-17380-3 usb: move EH SINGLE_STEP_SET_FEATURE implement to core
Since other USB 2.0 host may need it, like USB2 for XHCI. We move
this design to HCD core.

Acked-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
2018-10-29 11:10:38 +08:00
Li Jun f26243265e MLK-9617-19 usb: otg: test: show warning message for unsupported otg test dev
According to "USB On-The-Go and Embedded Host Automated Compliance Plan Version
1.2", chapter 6.7.23, unknown Device Not Supporting HNP:'Unsupported Device';
chapter 6.7.24 unknown Device Supporting HNP: 'Device No Response'

Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit 3fb9b462769d44073078f3b29fe68e214896ea9e)
2018-10-29 11:10:38 +08:00
Li Jun a355897936 MLK-9617-13 usb: core: otg: do quick bus reset after clear connection change
This patch changes bus reset time for B host enumuration, from entering B host
to the time clear USB_PORT_FEAT_C_CONNECTION, a random time after B host detect
port change for A peripheral connection may not work.

Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit b87d3bb0672ebcfb29c7db8708c586b2d38558d1)
(cherry picked from commit f3ec1858d5293de28476996a59287b7adb8e9cd2)
2018-10-29 11:10:38 +08:00
Li Jun 531705ccbb MLK-9617-9 usb: core: hub: use a_set_b_hnp_en and b_hnp_en for otg fsm mode
Use a_set_b_hnp_en to identify if a host can succeed to set b_hnp_enable
for B device, use b_hnp_enable flag to identify if the connected OTG device
is HNP capable. So if the connected otg device is HNP capable but b_hnp_enable
is not set for A host, the host which support HNP polling should continue
enumeration to see if the B device can talk to it later by hnp polling.

Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit b715d0773eea212a25d6b8c5d94530e12935fdaf)
(cherry picked from commit 454369742ce4dec01d89c946a28c3069fc23bbea)
2018-10-29 11:10:38 +08:00
Li Jun ef73384c58 MLK-9617-6 usb: core: otg: do not break otg device enumeration
If a HNP capable device STALL b_hnp_enable set feature request, A device
as host should not break otg device enumeration, because this set feature
failure only indicates the B device does not want to be host role for the
moment, A device as host talk to it should be okay.

see charpter 6.2.2.2 of OTG and EH 2.0:
"If the a_hnp_support feature is set, but the b_hnp_enable feature is not set,
then it is likely that b_hnp_enable will be set later when the A-device is
finished using the bus."

Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit 51317577d16034ba151da8d502319f4befb91278)
(cherry picked from commit 3d5d5139b3aef654e8004a2ad9ce757af50aee57)
2018-10-29 11:10:38 +08:00
Li Jun 224768be9e MLK-9606-1 usb: otg: test: add otg test device into otg and EH TPL
This patch add otg test device with VID(0x1a0a) and PID(0x0200) into otg and
EH TPL.

Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <b47624@freescale.com>
(cherry picked from commit b88ee5e2cbf55aaed3b6c5dd0aff7f826f9e357d)
(cherry picked from commit 8c11515f82876e69aa14e1c31fcb5031cf4edfcc)
2018-10-29 11:10:38 +08:00
Li Jun 843feb1a19 MLK-9829 usb: core: print suggested message if failed to get device descriptor
This is required for USB OTG and EH compliance test 6.7.22(A-UUT “Device No
Response” for connection timeout). When the connected usb device(PET) does
not response to transactions, host will fail to get device descriptor.

Signed-off-by: Li Jun <jun.li@freescale.com>
(cherry picked from commit 86d0bd661ecbbdf97dd9a8ddbaf0d3811de7f39e)
(cherry picked from commit 858af83637291d2ececfc7b2b4b17e3a371b53f3)
2018-10-29 11:10:38 +08:00
Peter Chen 3826594f46 MLK-11340-40 usb: whitelist: update otg & eh's TPL for fsl i.mx
The default TPL is for USB OTG & EH compliance test, the supported
class is: mass storage, hub, and hid.

Besides, we add one match criterion that matching targeted device
through class at interface descriptor.

Tested-by: Li Jun <b47624@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
(cherry picked from commit 483c071d989ceb36cacf76e1e3e779c67e5b8280)
2018-10-29 11:10:38 +08:00
Alan Stern 9691f745e1 USB: remove LPM management from usb_driver_claim_interface()
commit c183813fce upstream.

usb_driver_claim_interface() disables and re-enables Link Power
Management, but it shouldn't do either one, for the reasons listed
below.  This patch removes the two LPM-related function calls from the
routine.

The reason for disabling LPM in the analogous function
usb_probe_interface() is so that drivers won't have to deal with
unwanted LPM transitions in their probe routine.  But
usb_driver_claim_interface() doesn't call the driver's probe routine
(or any other callbacks), so that reason doesn't apply here.

Furthermore, no driver other than usbfs will ever call
usb_driver_claim_interface() unless it is already bound to another
interface in the same device, which means disabling LPM here would be
redundant.  usbfs doesn't interact with LPM at all.

Lastly, the error return from usb_unlocked_disable_lpm() isn't handled
properly; the code doesn't clean up its earlier actions before
returning.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Fixes: 8306095fd2 ("USB: Disable USB 3.0 LPM in critical sections.")
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-03 17:00:56 -07:00
Oliver Neukum ec6dc4b61c USB: usbdevfs: restore warning for nonsensical flags
commit 81e0403b26 upstream.

If we filter flags before they reach the core we need to generate our
own warnings.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Fixes: 0cb54a3e47 ("USB: debugging code shouldn't alter control flow")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-03 17:00:56 -07:00
Oliver Neukum 25a8d48251 USB: usbdevfs: sanitize flags more
commit 7a68d9fb85 upstream.

Requesting a ZERO_PACKET or not is sensible only for output.
In the input direction the device decides.
Likewise accepting short packets makes sense only for input.

This allows operation with panic_on_warn without opening up
a local DOS.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reported-by: syzbot+843efa30c8821bd69f53@syzkaller.appspotmail.com
Fixes: 0cb54a3e47 ("USB: debugging code shouldn't alter control flow")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-03 17:00:56 -07:00
Alan Stern 5b6717c6a3 USB: handle NULL config in usb_find_alt_setting()
commit c9a4cb204e upstream.

usb_find_alt_setting() takes a pointer to a struct usb_host_config as
an argument; it searches for an interface with specified interface and
alternate setting numbers in that config.  However, it crashes if the
usb_host_config pointer argument is NULL.

Since this is a general-purpose routine, available for use in many
places, we want to to be more robust.  This patch makes it return NULL
whenever the config argument is NULL.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: syzbot+19c3aaef85a89d451eac@syzkaller.appspotmail.com
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-03 17:00:55 -07:00
Alan Stern 4253abe6a3 USB: fix error handling in usb_driver_claim_interface()
commit bd729f9d67 upstream.

The syzbot fuzzing project found a use-after-free bug in the USB
core.  The bug was caused by usbfs not unbinding from an interface
when the USB device file was closed, which led another process to
attempt the unbind later on, after the private data structure had been
deallocated.

The reason usbfs did not unbind the interface at the appropriate time
was because it thought the interface had never been claimed in the
first place.  This was caused by the fact that
usb_driver_claim_interface() does not clean up properly when
device_bind_driver() returns an error.  Although the error code gets
passed back to the caller, the iface->dev.driver pointer remains set
and iface->condition remains equal to USB_INTERFACE_BOUND.

This patch adds proper error handling to usb_driver_claim_interface().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: syzbot+f84aa7209ccec829536f@syzkaller.appspotmail.com
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-03 17:00:55 -07:00
Maxence Duprès 6def1c1719 USB: add quirk for WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
commit 9b83a1c301 upstream.

WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
cause a -EPROTO error, a communication restart and loop again.

This issue has already been fixed for KS25.
https://lore.kernel.org/patchwork/patch/753077/

I just add device 201 for KS49 in quirks.c to get it works.

Signed-off-by: Laurent Roux <xpros64@hotmail.fr>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-26 08:38:07 +02:00
Mathias Nyman 760c41fceb usb: Avoid use-after-free by flushing endpoints early in usb_set_interface()
commit f9a5b4f58b upstream.

The steps taken by usb core to set a new interface is very different from
what is done on the xHC host side.

xHC hardware will do everything in one go. One command is used to set up
new endpoints, free old endpoints, check bandwidth, and run the new
endpoints.

All this is done by xHC when usb core asks the hcd to check for
available bandwidth. At this point usb core has not yet flushed the old
endpoints, which will cause use-after-free issues in xhci driver as
queued URBs are cancelled on a re-allocated endpoint.

To resolve this add a call to usb_disable_interface() which will flush
the endpoints before calling usb_hcd_alloc_bandwidth()

Additional checks in xhci driver will also be implemented to gracefully
handle stale URB cancel on freed and re-allocated endpoints

Cc: <stable@vger.kernel.org>
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-26 08:38:07 +02:00
Tim Anderson 0845f2a477 USB: Add quirk to support DJI CineSSD
commit f45681f9be upstream.

This device does not correctly handle the LPM operations.

Also, the device cannot handle ATA pass-through commands
and locks up when attempted while running in super speed.

This patch adds the equivalent quirk logic as found in uas.

Signed-off-by: Tim Anderson <tsa@biglakesoftware.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-26 08:38:07 +02:00
Mathias Nyman 4e237cfa57 usb: Don't die twice if PCI xhci host is not responding in resume
commit f3dc41c5d2 upstream.

usb_hc_died() should only be called once, and with the primary HCD
as parameter. It will mark both primary and secondary hcd's dead.

Remove the extra call to usb_cd_died with the shared hcd as parameter.

Fixes: ff9d78b36f ("USB: Set usb_hcd->state and flags for shared roothubs")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-26 08:38:06 +02:00
Dominik Bozek f17d397bfe usb: hub: Don't wait for connect state at resume for powered-off ports
[ Upstream commit 5d111f5190 ]

wait_for_connected() wait till a port change status to
USB_PORT_STAT_CONNECTION, but this is not possible if
the port is unpowered. The loop will only exit at timeout.

Such case take place if an over-current incident happen
while system is in S3. Then during resume wait_for_connected()
will wait 2s, which may be noticeable by the user.

Signed-off-by: Dominik Bozek <dominikx.bozek@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-03 07:50:40 +02:00
Bin Liu ac3f65c6b6 usb: core: handle hub C_PORT_OVER_CURRENT condition
commit 249a32b7ee upstream.

Based on USB2.0 Spec Section 11.12.5,

  "If a hub has per-port power switching and per-port current limiting,
  an over-current on one port may still cause the power on another port
  to fall below specific minimums. In this case, the affected port is
  placed in the Power-Off state and C_PORT_OVER_CURRENT is set for the
  port, but PORT_OVER_CURRENT is not set."

so let's check C_PORT_OVER_CURRENT too for over current condition.

Fixes: 08d1dec6f4 ("usb:hub set hub->change_bits when over-current happens")
Cc: <stable@vger.kernel.org>
Tested-by: Alessandro Antenucci <antenucci@korg.it>
Signed-off-by: Bin Liu <b-liu@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-28 07:55:44 +02:00
Nico Sneck 55f51e5b4c usb: quirks: add delay quirks for Corsair Strafe
commit bba57eddad upstream.

Corsair Strafe appears to suffer from the same issues
as the Corsair Strafe RGB.
Apply the same quirks (control message delay and init delay)
that the RGB version has to 1b1c:1b15.

With these quirks in place the keyboard works correctly upon
booting the system, and no longer requires reattaching the device.

Signed-off-by: Nico Sneck <snecknico@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-17 11:39:26 +02:00
Maxim Moseychuk 3c22218ed8 usb: do not reset if a low-speed or full-speed device timed out
commit 6e01827ed9 upstream.

Some low-speed and full-speed devices (for example, bluetooth)
do not have time to initialize. For them, ETIMEDOUT is a valid error.
We need to give them another try. Otherwise, they will
never be initialized correctly and in dmesg will be messages
"Bluetooth: hci0 command 0x1002 tx timeout" or similars.

Fixes: 264904ccc3 ("usb: retry reset if a device times out")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Maxim Moseychuk <franchesko.salias.hudro.pedros@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:24:47 +02:00
Alan Stern 0e548f5aba USB: Accept bulk endpoints with 1024-byte maxpacket
commit fb5ee84ea7 upstream.

Some non-compliant high-speed USB devices have bulk endpoints with a
1024-byte maxpacket size.  Although such endpoints don't work with
xHCI host controllers, they do work with EHCI controllers.  We used to
accept these invalid sizes (with a warning), but we no longer do
because of an unintentional change introduced by commit aed9d65ac3
("USB: validate wMaxPacketValue entries in endpoint descriptors").

This patch restores the old behavior, so that people with these
peculiar devices can use them without patching their kernels by hand.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Suggested-by: Elvinas <elvinas@veikia.lt>
Fixes: aed9d65ac3 ("USB: validate wMaxPacketValue entries in endpoint descriptors")
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-09 09:51:55 +02:00
Ravi Chandra Sadineni e6d2055ba3 USB: Increment wakeup count on remote wakeup.
commit 83a62c51ba upstream.

On chromebooks we depend on wakeup count to identify the wakeup source.
But currently USB devices do not increment the wakeup count when they
trigger the remote wake. This patch addresses the same.

Resume condition is reported differently on USB 2.0 and USB 3.0 devices.

On USB 2.0 devices, a wake capable device, if wake enabled, drives
resume signal to indicate a remote wake (USB 2.0 spec section 7.1.7.7).
The upstream facing port then sets C_PORT_SUSPEND bit and reports a
port change event (USB 2.0 spec section 11.24.2.7.2.3). Thus if a port
has resumed before driving the resume signal from the host and
C_PORT_SUSPEND is set, then the device attached to the given port might
be the reason for the last system wakeup. Increment the wakeup count for
the same.

On USB 3.0 devices, a function may signal that it wants to exit from device
suspend by sending a Function Wake Device Notification to the host (USB3.0
spec section 8.5.6.4) Thus on receiving the Function Wake, increment the
wakeup count.

Signed-off-by: Ravi Chandra Sadineni <ravisadineni@chromium.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-01 12:58:11 -07:00
Kamil Lulko c59dc4d135 usb: core: Add quirk for HP v222w 16GB Mini
commit 3180dabe08 upstream.

Add DELAY_INIT quirk to fix the following problem with HP
v222w 16GB Mini:

usb 1-3: unable to read config index 0 descriptor/start: -110
usb 1-3: can't read configurations, error -110
usb 1-3: can't set config #1, error -110

Signed-off-by: Kamil Lulko <kamilx.lulko@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-01 12:58:10 -07:00
Zhengjun Xing f7f9187a11 USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw
commit 64627388b5 upstream.

USB3 hubs don't support global suspend.

USB3 specification 10.10, Enhanced SuperSpeed hubs only support selective
suspend and resume, they do not support global suspend/resume where the
hub downstream facing ports states are not affected.

When system enters hibernation it first enters freeze process where only
the root hub enters suspend, usb_port_suspend() is not called for other
devices, and suspend status flags are not set for them. Other devices are
expected to suspend globally. Some external USB3 hubs will suspend the
downstream facing port at global suspend. These devices won't be resumed
at thaw as the suspend status flag is not set.

A USB3 removable hard disk connected through a USB3 hub that won't resume
at thaw will fail to synchronize SCSI cache, return “cmd cmplt err -71”
error, and needs a 60 seconds timeout which causing system hang for 60s
before the USB host reset the port for the USB3 removable hard disk to
recover.

Fix this by always calling usb_port_suspend() during freeze for USB3
devices.

Signed-off-by: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-24 09:36:25 +02:00
Johan Hovold 872181a79b USB: ledtrig-usbport: fix of-node leak
[ Upstream commit 03310a1548 ]

This code looks up a USB device node from a given parent USB device but
never dropped its reference to the returned node.

As only the address of the node is used for a later matching, the
reference can be dropped immediately.

Note that this trigger implementation confuses the description of the
USB device connected to a port with the port itself (which does not have
a device-tree representation).

Fixes: 4f04c210d0 ("usb: core: read USB ports from DT in the usbport LED trigger driver")
Cc: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-19 08:42:48 +01:00
Danilo Krummrich 42b8dfefbb usb: quirks: add control message delay for 1b1c:1b20
commit cb88a05887 upstream.

Corsair Strafe RGB keyboard does not respond to usb control messages
sometimes and hence generates timeouts.

Commit de3af5bf25 ("usb: quirks: add delay init quirk for Corsair
Strafe RGB keyboard") tried to fix those timeouts by adding
USB_QUIRK_DELAY_INIT.

Unfortunately, even with this quirk timeouts of usb_control_msg()
can still be seen, but with a lower frequency (approx. 1 out of 15):

[   29.103520] usb 1-8: string descriptor 0 read error: -110
[   34.363097] usb 1-8: can't set config #1, error -110

Adding further delays to different locations where usb control
messages are issued just moves the timeouts to other locations,
e.g.:

[   35.400533] usbhid 1-8:1.0: can't add hid device: -110
[   35.401014] usbhid: probe of 1-8:1.0 failed with error -110

The only way to reliably avoid those issues is having a pause after
each usb control message. In approx. 200 boot cycles no more timeouts
were seen.

Addionaly, keep USB_QUIRK_DELAY_INIT as it turned out to be necessary
to have the delay in hub_port_connect() after hub_port_init().

The overall boot time seems not to be influenced by these additional
delays, even on fast machines and lightweight distributions.

Fixes: de3af5bf25 ("usb: quirks: add delay init quirk for Corsair Strafe RGB keyboard")
Cc: stable@vger.kernel.org
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-19 08:42:46 +01:00
Jack Stocker f74ddc2e61 Add delay-init quirk for Corsair K70 RGB keyboards
commit 7a1646d922 upstream.

Following on from this patch: https://lkml.org/lkml/2017/11/3/516,
Corsair K70 RGB keyboards also require the DELAY_INIT quirk to
start correctly at boot.

Device ids found here:
usb 3-3: New USB device found, idVendor=1b1c, idProduct=1b13
usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-3: Product: Corsair K70 RGB Gaming Keyboard

Signed-off-by: Jack Stocker <jackstocker.93@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-28 10:19:42 +01:00
Takashi Iwai ebf7d035c3 usb: core: Add a helper function to check the validity of EP type in URB
commit e901b98738 upstream.

This patch adds a new helper function to perform a sanity check of the
given URB to see whether it contains a valid endpoint.  It's a light-
weight version of what usb_submit_urb() does, but without the kernel
warning followed by the stack trace, just returns an error code.

Especially for a driver that doesn't parse the descriptor but fills
the URB with the fixed endpoint (e.g. some quirks for non-compliant
devices), this kind of check is preferable at the probe phase before
actually submitting the urb.

Tested-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:07:45 +01:00
Mathias Nyman c7c4e00a66 USB: Fix off by one in type-specific length check of BOS SSP capability
commit 07b9f12864 upstream.

USB 3.1 devices are not detected as 3.1 capable since 4.15-rc3 due to a
off by one in commit 81cf4a4536 ("USB: core: Add type-specific length
check of BOS descriptors")

It uses USB_DT_USB_SSP_CAP_SIZE() to get SSP capability size which takes
the zero based SSAC as argument, not the actual count of sublink speed
attributes.

USB3 spec 9.6.2.5 says "The number of Sublink Speed Attributes = SSAC + 1."

The type-specific length check patch was added to stable and needs to be
fixed there as well

Fixes: 81cf4a4536 ("USB: core: Add type-specific length check of BOS descriptors")
CC: Masakazu Mokuno <masakazu.mokuno@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-02 20:31:15 +01:00
Oliver Neukum e2f33e5983 usb: add RESET_RESUME for ELSA MicroLink 56K
commit b9096d9f15 upstream.

This modem needs this quirk to operate. It produces timeouts when
resumed without reset.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-02 20:31:15 +01:00
Dmitry Fleytman Dmitry Fleytman b9d02d3c58 usb: Add device quirk for Logitech HD Pro Webcam C925e
commit 7f038d256c upstream.

Commit e0429362ab
("usb: Add device quirk for Logitech HD Pro Webcams C920 and C930e")
introduced quirk to workaround an issue with some Logitech webcams.

There is one more model that has the same issue - C925e, so applying
the same quirk as well.

See aforementioned commit message for detailed explanation of the problem.

Signed-off-by: Dmitry Fleytman <dmitry.fleytman@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-02 20:31:14 +01:00
Alan Stern 4c5ae6a301 USB: core: prevent malicious bNumInterfaces overflow
commit 48a4ff1c7b upstream.

A malicious USB device with crafted descriptors can cause the kernel
to access unallocated memory by setting the bNumInterfaces value too
high in a configuration descriptor.  Although the value is adjusted
during parsing, this adjustment is skipped in one of the error return
paths.

This patch prevents the problem by setting bNumInterfaces to 0
initially.  The existing code already sets it to the proper value
after parsing is complete.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-20 10:10:18 +01:00
Oliver Neukum 15f12be986 USB: usbfs: Filter flags passed in from user space
commit 446f666da9 upstream.

USBDEVFS_URB_ISO_ASAP must be accepted only for ISO endpoints.
Improve sanity checking.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-10 13:40:44 +01:00
Masakazu Mokuno 903b2d14d0 USB: core: Add type-specific length check of BOS descriptors
commit 81cf4a4536 upstream.

As most of BOS descriptors are longer in length than their header
'struct usb_dev_cap_header', comparing solely with it is not sufficient
to avoid out-of-bounds access to BOS descriptors.

This patch adds descriptor type specific length check in
usb_get_bos_descriptor() to fix the issue.

Signed-off-by: Masakazu Mokuno <masakazu.mokuno@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-10 13:40:44 +01:00
Mike Looijmans 755532dd5f usb: hub: Cycle HUB power when initialization fails
commit 973593a960 upstream.

Sometimes the USB device gets confused about the state of the initialization and
the connection fails. In particular, the device thinks that it's already set up
and running while the host thinks the device still needs to be configured. To
work around this issue, power-cycle the hub's output to issue a sort of "reset"
to the device. This makes the device restart its state machine and then the
initialization succeeds.

This fixes problems where the kernel reports a list of errors like this:

usb 1-1.3: device not accepting address 19, error -71

The end result is a non-functioning device. After this patch, the sequence
becomes like this:

usb 1-1.3: new high-speed USB device number 18 using ci_hdrc
usb 1-1.3: device not accepting address 18, error -71
usb 1-1.3: new high-speed USB device number 19 using ci_hdrc
usb 1-1.3: device not accepting address 19, error -71
usb 1-1-port3: attempt power cycle
usb 1-1.3: new high-speed USB device number 21 using ci_hdrc
usb-storage 1-1.3:1.2: USB Mass Storage device detected

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-10 13:40:44 +01:00
Kai-Heng Feng 502ae7582a usb: quirks: Add no-lpm quirk for KY-688 USB 3.1 Type-C Hub
commit e43a12f179 upstream.

KY-688 USB 3.1 Type-C Hub internally uses a Genesys Logic hub to connect
to Realtek r8153.

Similar to commit ("7496cfe5431f2 usb: quirks: Add no-lpm quirk for Moshi
USB to Ethernet Adapter"), no-lpm can make r8153 ethernet work.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-10 13:40:37 +01:00
Bernhard Rosenkraenzer 1e7577588c USB: Add delay-init quirk for Corsair K70 LUX keyboards
commit a0fea6027f upstream.

Without this patch, K70 LUX keyboards don't work, saying
usb 3-3: unable to read config index 0 descriptor/all
usb 3-3: can't read configurations, error -110
usb usb3-port3: unable to enumerate USB device

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-21 09:49:21 +01:00
Alan Stern 95b0ab9e53 USB: usbfs: compute urb->actual_length for isochronous
commit 2ef47001b3 upstream.

The USB kerneldoc says that the actual_length field "is read in
non-iso completion functions", but the usbfs driver uses it for all
URB types in processcompl().  Since not all of the host controller
drivers set actual_length for isochronous URBs, programs using usbfs
with some host controllers don't work properly.  For example, Minas
reports that a USB camera controlled by libusb doesn't work properly
with a dwc2 controller.

It doesn't seem worthwhile to change the HCDs and the documentation,
since the in-kernel USB class drivers evidently don't rely on
actual_length for isochronous transfers.  The easiest solution is for
usbfs to calculate the actual_length value for itself, by adding up
the lengths of the individual packets in an isochronous transfer.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Reported-and-tested-by: wlf <wulf@rock-chips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-21 09:49:21 +01:00
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Mathias Nyman 1ac7db6333 usb: hub: Allow reset retry for USB2 devices on connect bounce
If the connect status change is set during reset signaling, but
the status remains connected just retry port reset.

This solves an issue with connecting a 90W HP Thunderbolt 3 dock
with a Lenovo Carbon x1 (5th generation) which causes a 30min loop
of a high speed device being re-discovererd before usb ports starts
working.

[...]
[ 389.023845] usb 3-1: new high-speed USB device number 55 using xhci_hcd
[ 389.491841] usb 3-1: new high-speed USB device number 56 using xhci_hcd
[ 389.959928] usb 3-1: new high-speed USB device number 57 using xhci_hcd
[...]

This is caused by a high speed device that doesn't successfully go to the
enabled state after the second port reset. Instead the connection bounces
(connected, with connect status change), bailing out completely from
enumeration just to restart from scratch.

Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1716332

Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-19 09:49:11 +02:00
Alan Stern 1c0edc3633 USB: core: fix out-of-bounds access bug in usb_get_bos_descriptor()
Andrey used the syzkaller fuzzer to find an out-of-bounds memory
access in usb_get_bos_descriptor().  The code wasn't checking that the
next usb_dev_cap_header structure could fit into the remaining buffer
space.

This patch fixes the error and also reduces the bNumDeviceCaps field
in the header to match the actual number of capabilities found, in
cases where there are fewer than expected.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-18 19:11:52 +02:00
Felipe Balbi 2811501e6d usb: quirks: add quirk for WORLDE MINI MIDI keyboard
This keyboard doesn't implement Get String descriptors properly even
though string indexes are valid. What happens is that when requesting
for the String descriptor, the device disconnects and
reconnects. Without this quirk, this loop will continue forever.

Cc: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Владимир Мартьянов <vilgeforce@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-17 12:25:41 +02:00
Hans de Goede 845d584f41 USB: devio: Revert "USB: devio: Don't corrupt user memory"
Taking the uurb->buffer_length userspace passes in as a maximum for the
actual urbs transfer_buffer_length causes 2 serious issues:

1) It breaks isochronous support for all userspace apps using libusb,
   as existing libusb versions pass in 0 for uurb->buffer_length,
   relying on the kernel using the lenghts of the usbdevfs_iso_packet_desc
   descriptors passed in added together as buffer length.

   This for example causes redirection of USB audio and Webcam's into
   virtual machines using qemu-kvm to no longer work. This is a userspace
   ABI break and as such must be reverted.

   Note that the original commit does not protect other users / the
   kernels memory, it only stops the userspace process making the call
   from shooting itself in the foot.

2) It may cause the kernel to program host controllers to DMA over random
   memory. Just as the devio code used to only look at the iso_packet_desc
   lenghts, the host drivers do the same, relying on the submitter of the
   urbs to make sure the entire buffer is large enough and not checking
   transfer_buffer_length.

   But the "USB: devio: Don't corrupt user memory" commit now takes the
   userspace provided uurb->buffer_length for the buffer-size while copying
   over the user-provided iso_packet_desc lengths 1:1, allowing the user
   to specify a small buffer size while programming the host controller to
   dma a lot more data.

   (Atleast the ohci, uhci, xhci and fhci drivers do not check
    transfer_buffer_length for isoc transfers.)

This reverts commit fa1ed74eb1 ("USB: devio: Don't corrupt user memory")
fixing both these issues.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-17 10:53:20 +02:00
Dan Carpenter fa1ed74eb1 USB: devio: Don't corrupt user memory
The user buffer has "uurb->buffer_length" bytes.  If the kernel has more
information than that, we should truncate it instead of writing past
the end of the user's buffer.  I added a WARN_ONCE() to help the user
debug the issue.

Reported-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-25 10:57:13 +02:00
Dan Carpenter 57999d1107 USB: devio: Prevent integer overflow in proc_do_submiturb()
There used to be an integer overflow check in proc_do_submiturb() but
we removed it.  It turns out that it's still required.  The
uurb->buffer_length variable is a signed integer and it's controlled by
the user.  It can lead to an integer overflow when we do:

	num_sgs = DIV_ROUND_UP(uurb->buffer_length, USB_SG_SIZE);

If we strip away the macro then that line looks like this:

	num_sgs = (uurb->buffer_length + USB_SG_SIZE - 1) / USB_SG_SIZE;
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
It's the first addition which can overflow.

Fixes: 1129d270cb ("USB: Increase usbfs transfer limit")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-25 10:57:13 +02:00
Greg Kroah-Hartman 2e1c42391f USB: core: harden cdc_parse_cdc_header
Andrey Konovalov reported a possible out-of-bounds problem for the
cdc_parse_cdc_header function.  He writes:
	It looks like cdc_parse_cdc_header() doesn't validate buflen
	before accessing buffer[1], buffer[2] and so on. The only check
	present is while (buflen > 0).

So fix this issue up by properly validating the buffer length matches
what the descriptor says it is.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-21 17:01:38 +02:00
Greg Kroah-Hartman bd7a3fe770 USB: fix out-of-bounds in usb_set_configuration
Andrey Konovalov reported a possible out-of-bounds problem for a USB interface
association descriptor.  He writes:
	It seems there's no proper size check of a USB_DT_INTERFACE_ASSOCIATION
	descriptor. It's only checked that the size is >= 2 in
	usb_parse_configuration(), so find_iad() might do out-of-bounds access
	to intf_assoc->bInterfaceCount.

And he's right, we don't check for crazy descriptors of this type very well, so
resolve this problem.  Yet another issue found by syzkaller...

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-19 17:27:16 +02:00
Dmitry Fleytman b2a542bbb3 usb: Increase quirk delay for USB devices
Commit e0429362ab
("usb: Add device quirk for Logitech HD Pro Webcams C920 and C930e")
introduced quirk to workaround an issue with some Logitech webcams.

The workaround is introducing delay for some USB operations.

According to our testing, delay introduced by original commit
is not long enough and in rare cases we still see issues described
by the aforementioned commit.

This patch increases delays introduced by original commit.
Having this patch applied we do not see those problems anymore.

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-18 11:28:23 +02:00
Christian Lamparter aa75936544 usb: core: usbport: fix "BUG: key not in .data" when lockdep is enabled
This patch fixes a splat that happens if CONFIG_DEBUG_LOCK_ALLOC
is enabled and the ledtrig_usbport is loaded. (on a device that
has some usb ports).

[   60.695479] BUG: key c53f8420 not in .data!
[   60.695521] ------------[ cut here ]------------
[   60.698542] WARNING: CPU: 1 PID: 854 at kernel/locking/lockdep.c:3134 __kernfs_create_file+0x5c/0xc0
[   60.703355] DEBUG_LOCKS_WARN_ON(1)
[   60.712534] Modules linked in:
[   60.944078] CPU: 1 PID: 854 Comm: S96led Not tainted 4.9.44 #0
[   60.944329] Hardware name: Generic DT based system
[   60.950106] [<c021585c>] (unwind_backtrace) from [<c0212150>] (show_stack+0x10/0x14)
[   60.954878] [<c0212150>] (show_stack) from [<c03a2bc4>] (dump_stack+0x7c/0x9c)
[   60.962772] [<c03a2bc4>] (dump_stack) from [<c021db34>] (__warn+0xbc/0xec)
[   60.969799] [<c021db34>] (__warn) from [<c021db98>] (warn_slowpath_fmt+0x34/0x44)
[   60.976656] [<c021db98>] (warn_slowpath_fmt)
[   60.984210] [<c0320688>] (__kernfs_create_file)
[   60.992712] [<c0320ef0>] (sysfs_add_file_mode_ns)
[   61.002090] [<c0321044>] (sysfs_add_file) from
[   61.010619] [<c0321094>] (sysfs_add_file_to_group)
[   61.019263] [<bf24a47c>] (usbport_trig_add_usb_dev_ports [ledtrig_usbport])
[   61.031002] [<c0430414>] (bus_for_each_dev)
[   61.042106] [<c0497dc4>] (usb_for_each_dev)
[   61.050375] [<bf24a2ac>] (usbport_trig_activate [ledtrig_usbport])
[   61.060685] [<c04e1708>] (led_trigger_set) from [<c04e1834>]
[...]

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-29 08:27:25 +02:00