USB: core: add device-qualifier quirk

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commit 2a159389bf upstream.

Add new quirk for devices that cannot handle requests for the
device_qualifier descriptor.

A USB-2.0 compliant device must respond to requests for the
device_qualifier descriptor (even if it's with a request error), but at
least one device is known to misbehave after such a request.

Suggested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ luis: prereq for the following Elan touchscreen patches ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Johan Hovold 2014-08-25 17:51:26 +02:00 • committed by Luis Henriques

parent 785c933887

commit 41097a3820

2 changed files with 6 additions and 0 deletions

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3

drivers/usb/core/hub.c

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3

include/linux/usb/quirks.h

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