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authorAnton Vorontsov <avorontsov@ru.mvista.com>2008-12-25 17:15:14 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-02-09 11:19:47 -0800
commitaf3ddbd76304f9f602c970f9b09a0c9d8cf8336c (patch)
treeffd737b63503469d328790577e5e27c657e327d2
parent82341b3690fce8f70998e3cfb79fbffff0eb7e6b (diff)
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 <avorontsov@ru.mvista.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/gadget/fsl_qe_udc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index 32f415ebd3d..d701bf4698d 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);