tree 6ba2a410b7d73054b39c6f832c7e2d91f7afaebb
parent 09185a5999c733ec37220ad4a0baa7598a2044d2
author Lu Baolu <baolu.lu@linux.intel.com> 1470883143 +0800
committer Lee Jones <lee.jones@linaro.org> 1475592482 +0100

mfd: rtsx_usb: Avoid setting ucr->current_sg.status

Member "status" of struct usb_sg_request is managed by usb core. A
spin lock is used to serialize the change of it. The driver could
check the value of req->status, but should avoid changing it without
the hold of the spinlock. Otherwise, it could cause race or error
in usb core.

This patch could be backported to stable kernels with version later
than v3.14.

Cc: stable@vger.kernel.org # 3.14+
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>