From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Mon, 26 Mar 2018 10:26:00 +0000 (+0300)
Subject: usb: dwc3: gadget: XferNotReady is Isoc-only
X-Git-Tag: v4.19~894^2~81^2~59
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=38408464aa7646e4d7b345a70951f968af35af0a;p=platform%2Fkernel%2Flinux-rpi.git

usb: dwc3: gadget: XferNotReady is Isoc-only

We don't use XferNotReady for anything other than Default Control
Pipe, which is handled in ep0.c, and Isochronous endpoints. Let's make
that clear in the code.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 36fabde..22c0822 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2533,11 +2533,13 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 		dwc3_endpoint_transfer_complete(dwc, dep, event);
 		break;
 	case DWC3_DEPEVT_XFERNOTREADY:
-		if (usb_endpoint_xfer_isoc(dep->endpoint.desc))
-			dwc3_gadget_start_isoc(dwc, dep, event);
-		else
-			__dwc3_gadget_kick_transfer(dep);
+		if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
+			dev_err(dwc->dev, "XferNotReady for non-Isoc %s\n",
+					dep->name);
+			return;
+		}
 
+		dwc3_gadget_start_isoc(dwc, dep, event);
 		break;
 	case DWC3_DEPEVT_STREAMEVT:
 		if (!usb_endpoint_xfer_bulk(dep->endpoint.desc)) {