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usb: cdc-wdm: make reset work with blocking IO
authorBjørn Mork <bjorn@mork.no>
Fri, 10 Feb 2012 08:44:08 +0000 (09:44 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 10 Feb 2012 19:28:18 +0000 (11:28 -0800)
Add a flag to tell wdm_read/wdm_write that a reset is in progress,
and wake any blocking read/write before taking the mutexes.  This
allows the device to reset without waiting for blocking IO to
finish.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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