From: Anton Vorontsov Date: Thu, 25 Dec 2008 14:15:14 +0000 (+0300) Subject: USB: fsl_qe_udc: Fix stalled TX requests bug X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=af3ddbd76304f9f602c970f9b09a0c9d8cf8336c;p=openwrt%2Fstaging%2Fblogic.git USB: fsl_qe_udc: Fix stalled TX requests bug While disabling an endpoint the driver nuking any pending requests, thus completing them with -ESHUTDOWN status. But the driver doesn't clear the tx_req, which means that a next TX request (after ep_enable), might get stalled, since the driver won't queue the new reqests. This patch fixes a bug I'm observing with ethernet gadget while playing with ifconfig usb0 up/down (the up/down sequence disables and enables `in' and `out' endpoints). Signed-off-by: Anton Vorontsov Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c index 32f415ebd3df..d701bf4698d2 100644 --- a/drivers/usb/gadget/fsl_qe_udc.c +++ b/drivers/usb/gadget/fsl_qe_udc.c @@ -1622,6 +1622,7 @@ static int qe_ep_disable(struct usb_ep *_ep) nuke(ep, -ESHUTDOWN); ep->desc = NULL; ep->stopped = 1; + ep->tx_req = NULL; qe_ep_reset(udc, ep->epnum); spin_unlock_irqrestore(&udc->lock, flags);