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usb: chipidea: udc: fix memory leak in _ep_nuke

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In hardware_enqueue code adds one extra td with dma_pool_alloc if
mReq->req.zero is true. When _ep_nuke will be called for that endpoint,
dma_pool_free will not be called to free that memory again. That patch
fixes this.

Cc: stable <stable@vger.kernel.org> # v3.5
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik 2013-04-04 13:13:47 +03:00 committed by Greg Kroah-Hartman
parent a9c174302b
commit 7ca2cd291f
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/chipidea/udc.c
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@ -540,6 +540,12 @@ __acquires(mEp->lock)
struct ci13xxx_req *mReq = \
list_entry(mEp->qh.queue.next,
struct ci13xxx_req, queue);
if (mReq->zptr) {
dma_pool_free(mEp->td_pool, mReq->zptr, mReq->zdma);
mReq->zptr = NULL;
}
list_del_init(&mReq->queue);
mReq->req.status = -ESHUTDOWN;