tree 563b7b4f7b76863dece546668b9b3319ff9abe51
parent 0414855fdc4a40da05221fc6062cccbc0c30f169
author Julius Werner <jwerner@chromium.org> 1393959159 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1394221611 -0800

usb: Add device quirk for Logitech HD Pro Webcams C920 and C930e

We've encountered a rare issue when enumerating two Logitech webcams
after a reboot that doesn't power cycle the USB ports. They are spewing
random data (possibly some leftover UVC buffers) on the second
(full-sized) Get Configuration request of the enumeration phase. Since
the data is random this can potentially cause all kinds of odd behavior,
and since it occasionally happens multiple times (after the kernel
issues another reset due to the garbled configuration descriptor), it is
not always recoverable. Set the USB_DELAY_INIT quirk that seems to work
around the issue.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>