diff options
authorThinh Nguyen <>2020-10-22 15:44:59 -0700
committerGreg Kroah-Hartman <>2020-11-10 12:37:33 +0100
commit290fcf3e0c0c825cf89101f4b2c0c2d9717f0ca8 (patch)
parent86875e1d6426ac1308c969abd1eb0eaf24ab40b4 (diff)
usb: dwc3: ep0: Fix delay status handling
commit fa27e2f6c5e674f3f1225f9ca7a7821faaf393bb upstream. If we want to send a control status on our own time (through delayed_status), make sure to handle a case where we may queue the delayed status before the host requesting for it (when XferNotReady is generated). Otherwise, the driver won't send anything because it's not EP0_STATUS_PHASE yet. To resolve this, regardless whether dwc->ep0state is EP0_STATUS_PHASE, make sure to clear the dwc->delayed_status flag if dwc3_ep0_send_delayed_status() is called. The control status can be sent when the host requests it later. Cc: <> Fixes: d97c78a1908e ("usb: dwc3: gadget: END_TRANSFER before CLEAR_STALL command") Signed-off-by: Thinh Nguyen <> Signed-off-by: Felipe Balbi <> Signed-off-by: Greg Kroah-Hartman <>
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 991cab9a7491..4de8e5f091cb 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -1058,10 +1058,11 @@ void dwc3_ep0_send_delayed_status(struct dwc3 *dwc)
unsigned int direction = !dwc->ep0_expect_in;
+ dwc->delayed_status = false;
if (dwc->ep0state != EP0_STATUS_PHASE)
- dwc->delayed_status = false;
__dwc3_ep0_do_control_status(dwc, dwc->eps[direction]);