diff mbox series

[v3,7/8] usb: dwc3: gadget: Skip waiting for CMDACT cleared during endxfer

Message ID 20220815213134.23783-8-quic_wcheng@quicinc.com (mailing list archive)
State Superseded
Headers show
Series Fix controller halt and endxfer timeout issues | expand

Commit Message

Wesley Cheng Aug. 15, 2022, 9:31 p.m. UTC
For endxfer commands that do not require an endpoint complete interrupt,
avoid having to wait for the command active bit to clear.  This allows for
EP0 events to continue to be handled, which allows for the controller to
complete it.  Otherwise, it is known that the endxfer command will fail if
there is a pending SETUP token that needs to be read.

Suggested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
---
 drivers/usb/dwc3/gadget.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index b2668a83cc29..5e8d3f02f99c 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -366,7 +366,9 @@  int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
 
 	dwc3_writel(dep->regs, DWC3_DEPCMD, cmd);
 
-	if (!(cmd & DWC3_DEPCMD_CMDACT)) {
+	if (!(cmd & DWC3_DEPCMD_CMDACT) ||
+		(DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_ENDTRANSFER &&
+		!(cmd & DWC3_DEPCMD_CMDIOC))) {
 		ret = 0;
 		goto skip_status;
 	}