tree ef381103150250af31d40742f9ac1481ed615b97
parent 224f6e4036f2c1c20eb8dd12906d5a9583a6224b
author Lu Baolu <baolu.lu@linux.intel.com> 1470882674 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1470933111 +0200

usb: misc: usbtest: add fix for driver hang

In sg_timeout(), req->status is set to "-ETIMEDOUT" before calling
into usb_sg_cancel(). usb_sg_cancel() will do nothing and return
directly if req->status has been set to a non-zero value. This will
cause driver hang whenever transfer time out is triggered.

This patch fixes this issue. It could be backported to stable kernel
with version later than v3.15.

Cc: stable@vger.kernel.org # 3.15+
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>