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authorThinh Nguyen <Thinh.Nguyen@synopsys.com>2020-05-05 19:46:33 -0700
committerFelipe Balbi <balbi@kernel.org>2020-05-25 11:09:41 +0300
commitb6842d4938c3101cb54dc262a6a89a5445f8fba8 (patch)
tree427ae5a80b02a64258c82f5b8144627c66655f6b /drivers
parent27b31b91b04bf7b76103d222bd2cbe37c9e59ed0 (diff)
downloadlinux-b6842d4938c3101cb54dc262a6a89a5445f8fba8.tar.bz2
usb: dwc3: gadget: Check for in-progress END_TRANSFER
While handling TRBs completion, if a END_TRANSFER command isn't completed, don't kick new transfer or issue END_TRANSFER command. Signed-off-by: Thinh Nguyen <thinhn@synopsys.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/dwc3/gadget.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 865e6fbb7360..3bb6f847a865 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2675,11 +2675,15 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
dwc3_gadget_ep_cleanup_completed_requests(dep, event, status);
+ if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)
+ goto out;
+
if (stop)
dwc3_stop_active_transfer(dep, true, true);
else if (dwc3_gadget_ep_should_continue(dep))
__dwc3_gadget_kick_transfer(dep);
+out:
/*
* WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
* See dwc3_gadget_linksts_change_interrupt() for 1st half.