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[1/5] usb: dwc3: ep0: Don't clear ep0 DWC3_EP_TRANSFER_STARTED

Message ID d3d618185fd614bb7426352a9fc1199641d3b5f5.1731545781.git.Thinh.Nguyen@synopsys.com
State New
Headers show
Series usb: dwc3: gadget: Misc fixes and cleanup | expand

Commit Message

Thinh Nguyen Nov. 14, 2024, 1:02 a.m. UTC 
The driver cannot issue the End Transfer command to the SETUP transfer.
Don't clear DWC3_EP_TRANSFER_STARTED flag to make sure that the driver
won't send Start Transfer command again, which can cause no-resource
error. For example this can occur if the host issues a reset to the
device.

Cc: stable@vger.kernel.org
Fixes: 76cb323f80ac ("usb: dwc3: ep0: clear all EP0 flags")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
 drivers/usb/dwc3/ep0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index f3d97ad5156e..666ac432f52d 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -232,7 +232,7 @@  void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
 	/* stall is always issued on EP0 */
 	dep = dwc->eps[0];
 	__dwc3_gadget_ep_set_halt(dep, 1, false);
-	dep->flags &= DWC3_EP_RESOURCE_ALLOCATED;
+	dep->flags &= DWC3_EP_RESOURCE_ALLOCATED | DWC3_EP_TRANSFER_STARTED;
 	dep->flags |= DWC3_EP_ENABLED;
 	dwc->delayed_status = false;