linux-stable.git/drivers/usb/core, branch v4.3.4

usb: Use the USB_SS_MULT() macro to decode burst multiplier for log message

2016-01-23T04:55:43+00:00

commit 5377adb092664d336ac212499961cac5e8728794 upstream.

usb_parse_ss_endpoint_companion() now decodes the burst multiplier
correctly in order to check that it's <= 3, but still uses the wrong
expression if warning that it's > 3.

Fixes: ff30cbc8da42 ("usb: Use the USB_SS_MULT() macro to get the ...")
Signed-off-by: Ben Hutchings 
Signed-off-by: Greg Kroah-Hartman

usb: core : hub: Fix BOS 'NULL pointer' kernel panic

2016-01-23T04:55:43+00:00

commit 464ad8c43a9ead98c2b0eaed86bea727f2ad106e upstream.

When a USB 3.0 mass storage device is disconnected in transporting
state, storage device driver may handle it as a transport error and
reset the device by invoking usb_reset_and_verify_device()
and following could happen:

in usb_reset_and_verify_device():
   udev->bos = NULL;

For U1/U2 enabled devices, driver will disable LPM, and in some
conditions:
   from usb_unlocked_disable_lpm()
    --> usb_disable_lpm()
    --> usb_enable_lpm()
        udev->bos->ss_cap->bU1devExitLat;

And it causes 'NULL pointer' and 'kernel panic':

[  157.976257] Unable to handle kernel NULL pointer dereference
at virtual address 00000010
...
[  158.026400] PC is at usb_enable_link_state+0x34/0x2e0
[  158.031442] LR is at usb_enable_lpm+0x98/0xac
...
[  158.137368] [] usb_enable_link_state+0x34/0x2e0
[  158.143451] [] usb_enable_lpm+0x94/0xac
[  158.148840] [] usb_disable_lpm+0xa8/0xb4
...
[  158.214954] Kernel panic - not syncing: Fatal exception

This commit moves 'udev->bos = NULL' behind usb_unlocked_disable_lpm()
to prevent from NULL pointer access.

Issue can be reproduced by following setup:
1) A SS pen drive behind a SS hub connected to the host.
2) Transporting data between the pen drive and the host.
3) Abruptly disconnect hub and pen drive from host.
4) With a chance it crashes.

Signed-off-by: Hans Yang 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: add quirk for devices with broken LPM

2016-01-23T04:55:42+00:00

commit ad87e03213b552a5c33d5e1e7a19a73768397010 upstream.

Some USB device / host controller combinations seem to have problems
with Link Power Management.  For example, Steinar found that his xHCI
controller wouldn't handle bandwidth calculations correctly for two
video cards simultaneously when LPM was enabled, even though the bus
had plenty of bandwidth available.

This patch introduces a new quirk flag for devices that should remain
disabled for LPM, and creates quirk entries for Steinar's devices.

Signed-off-by: Alan Stern 
Reported-by: Steinar H. Gunderson 
Signed-off-by: Greg Kroah-Hartman

usb: Add device quirk for Logitech PTZ cameras

2015-10-04T10:01:13+00:00

Add a device quirk for the Logitech PTZ Pro Camera and its sibling the
ConferenceCam CC3000e Camera.
This fixes the failed camera enumeration on some boot, particularly on
machines with fast CPU.

Tested by connecting a Logitech PTZ Pro Camera to a machine with a
Haswell Core i7-4600U CPU @ 2.10GHz, and doing thousands of reboot cycles
while recording the kernel logs and taking camera picture after each boot.
Before the patch, more than 7% of the boots show some enumeration transfer
failures and in a few of them, the kernel is giving up before actually
enumerating the webcam. After the patch, the enumeration has been correct
on every reboot.

Signed-off-by: Vincent Palatin 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

USB: Add reset-resume quirk for two Plantronics usb headphones.

2015-10-04T10:01:13+00:00

These two headphones need a reset-resume quirk to properly resume to
original volume level.

Signed-off-by: Yao-Wen Mao 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

usb: Use the USB_SS_MULT() macro to get the burst multiplier.

2015-09-22T05:48:53+00:00

Bits 1:0 of the bmAttributes are used for the burst multiplier.
The rest of the bits used to be reserved (zero), but USB3.1 takes bit 7
into use.

Use the existing USB_SS_MULT() macro instead to make sure the mult value
and hence max packet calculations are correct for USB3.1 devices.

Note that burst multiplier in bmAttributes is zero based and that
the USB_SS_MULT() macro adds one.

Cc: 
Signed-off-by: Mathias Nyman 
Signed-off-by: Greg Kroah-Hartman

Revert "usb: interface authorization: Introduces the default interface authorization"

2015-08-18T16:58:45+00:00

This reverts commit 1d958bef45030acfc5578263e9de3bb07032b8da as the
signed-off-by address is invalid.

Cc: Stefan Koch 
Signed-off-by: Greg Kroah-Hartman

Revert "usb: interface authorization: Control interface probing and claiming"

2015-08-18T16:58:26+00:00

This reverts commit de7718bd9c4d3db96991a98c2a0cb38258a04e47 as the
signed-off-by address is invalid.

Cc: Stefan Koch 
Signed-off-by: Greg Kroah-Hartman

Revert "usb: interface authorization: Introduces the USB interface authorization"

2015-08-18T16:58:04+00:00

This reverts commit ef0909c50fe63be3f9aa09bdf4db7efaa5919be9 as the
signed-off-by address is invalid.

Cc: Stefan Koch 
Signed-off-by: Greg Kroah-Hartman

Revert "usb: interface authorization: SysFS part of USB interface authorization"

2015-08-18T16:57:43+00:00

This reverts commit 187b3d75bbfba45a38b5d1d3656c0f11f6f6f2d0 as the
signed-off-by address is invalid.

Cc: Stefan Koch 
Signed-off-by: Greg Kroah-Hartman