diff mbox series

[v6,3/5] usb: dwc3: Increase DWC3 controller halt timeout

Message ID 20220901184314.30481-4-quic_wcheng@quicinc.com
State New
Headers show
Series [v6,1/5] usb: dwc3: Avoid unmapping USB requests if endxfer is not complete | expand

Commit Message

Wesley Cheng Sept. 1, 2022, 6:43 p.m. UTC 
Since EP0 transactions need to be completed before the controller halt
sequence is finished, this may take some time depending on the host and the
enabled functions.  Increase the controller halt timeout, so that we give
the controller sufficient time to handle EP0 transfers.

Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
---
 drivers/usb/dwc3/gadget.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 08281c4f47e6..c9310645701d 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2444,7 +2444,7 @@  static void __dwc3_gadget_set_speed(struct dwc3 *dwc)
 static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
 {
 	u32			reg;
-	u32			timeout = 500;
+	u32			timeout = 2000;
 
 	if (pm_runtime_suspended(dwc->dev))
 		return 0;
@@ -2477,6 +2477,7 @@  static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
 	dwc3_gadget_dctl_write_safe(dwc, reg);
 
 	do {
+		usleep_range(1000, 2000);
 		reg = dwc3_readl(dwc->regs, DWC3_DSTS);
 		reg &= DWC3_DSTS_DEVCTRLHLT;
 	} while (--timeout && !(!is_on ^ !reg));