| From | Greg Kroah-Hartman <> | Subject | [ 026/104] usb: chipidea: udc: fix memory leak in _ep_nuke | Date | Mon, 6 May 2013 16:11:45 -0700 |
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3.8-stable review patch. If anyone has any objections, please let me know.
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From: Michael Grzeschik <m.grzeschik@pengutronix.de>
commit 7ca2cd291fd84ae499390f227a255ccba2780a81 upstream.
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.
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>
--- drivers/usb/chipidea/udc.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -563,6 +563,12 @@ __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;
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