From: Wesley Cheng Date: Thu, 1 Sep 2022 19:36:24 +0000 (-0700) Subject: usb: dwc3: gadget: Skip waiting for CMDACT cleared during endxfer X-Git-Tag: v6.6.17~6449^2~74 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b353eb6dc285a0775a447f53e5b2a50bf3f9684f;p=platform%2Fkernel%2Flinux-rpi.git usb: dwc3: gadget: Skip waiting for CMDACT cleared during endxfer 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 Reviewed-by: Thinh Nguyen Signed-off-by: Wesley Cheng Link: https://lore.kernel.org/r/20220901193625.8727-5-quic_wcheng@quicinc.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2faa3d4..0149c91 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; }