From: Felipe Balbi <balbi@ti.com>
Date: Wed, 18 Jan 2012 15:06:03 +0000 (+0200)
Subject: usb: dwc3: gadget: fix XferNotReady debug print
X-Git-Tag: v3.4-rc1~184^2~22^2~35^2~25
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40aa41fba348bc5bd19ff5bcf2b03d67bb01d1ce;p=thirdparty%2Fkernel%2Flinux.git

usb: dwc3: gadget: fix XferNotReady debug print

Only bit 3 of the event status bitfield is valid
and the others should not be considered.

Make sure SW matches documentation on that case
to avoid bogus debugging prints which would
confuse an engineer.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 9e57f8e9bf17f..f4878c4dec0fc 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -719,6 +719,11 @@ struct dwc3_event_depevt {
 	u32	endpoint_event:4;
 	u32	reserved11_10:2;
 	u32	status:4;
+
+/* Within XferNotReady */
+#define DEPEVT_STATUS_TRANSFER_ACTIVE	(1 << 3)
+
+/* Within XferComplete */
 #define DEPEVT_STATUS_BUSERR    (1 << 0)
 #define DEPEVT_STATUS_SHORT     (1 << 1)
 #define DEPEVT_STATUS_IOC       (1 << 2)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index e0e2337dad136..4b64dc0bfa274 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1657,7 +1657,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 			int ret;
 
 			dev_vdbg(dwc->dev, "%s: reason %s\n",
-					dep->name, event->status
+					dep->name, event->status &
+					DEPEVT_STATUS_TRANSFER_ACTIVE
 					? "Transfer Active"
 					: "Transfer Not Active");