From: Peter Chen Date: Tue, 10 Sep 2013 07:34:39 +0000 (+0800) Subject: chipidea: udc: free pending TD at removal procedure X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4a29567b77bb87e8a488510f2d37c612e008d21b;p=linux-beck.git chipidea: udc: free pending TD at removal procedure There is a pending TD which is not freed after request finishes, we do this due to a controller bug. This TD needs to be freed when the driver is removed. It prints below error message when unload chipidea driver at current code: "ci_hdrc ci_hdrc.0: dma_pool_destroy ci_hw_td, b0001000 busy" It indicates the buffer at dma pool are still in use. This commit will free the pending TD at driver's removal procedure, it can fix the problem described above. Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 6b4c2f2eb946..4ef4edf2990f 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1600,6 +1600,8 @@ static void destroy_eps(struct ci_hdrc *ci) for (i = 0; i < ci->hw_ep_max; i++) { struct ci_hw_ep *hwep = &ci->ci_hw_ep[i]; + if (hwep->pending_td) + free_pending_td(hwep); dma_pool_free(ci->qh_pool, hwep->qh.ptr, hwep->qh.dma); } }