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usb: dwc2: gadget: ignore stall check for ep0 

dwc2_hsotg_start_req starts a request only if endpoint is not stalled.
Ignore this check for ep0 as core will clear DOEPCTL0.Stall after
sending stall handshake. Prepare instead for receiving next setup
packet.

Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mian Yousaf Kaukab 2015-09-29 12:08:22 +02:00 committed by Felipe Balbi
parent 86de489536
commit b2d4c54e51
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc2/gadget.c
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@ -556,7 +556,7 @@ static void dwc2_hsotg_start_req(struct dwc2_hsotg *hsotg,
/* If endpoint is stalled, we will restart request later */
ctrl = dwc2_readl(hsotg->regs + epctrl_reg);
if (ctrl & DXEPCTL_STALL) {
if (index && ctrl & DXEPCTL_STALL) {
dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index);
return;
}