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

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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>

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Lu Baolu 2016-08-11 10:39:03 +08:00 • committed by Lee Jones

parent 09185a5999

commit 8dcc5ff8fc

1 changed files with 5 additions and 5 deletions

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drivers/mfd/rtsx_usb.c

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