linux-kernel - [ 059/167] [PATCH] usb: dwc3: ep0: increment "actual" on bounced ep0 case

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Date:	Wed, 09 May 2012 06:51:28 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [ 059/167] [PATCH] usb: dwc3: ep0: increment "actual" on bounced ep0 case

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Felipe Balbi <balbi@...com>

commit cd423dd3634a5232a3019eb372b144619a61cd16 upstream.

due to a HW limitation we have a bounce buffer for ep0
out transfers which are not aligned with MaxPacketSize.

On such case we were not increment r->actual as we should.

This patch fixes that mistake.

Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/dwc3/ep0.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -583,9 +583,10 @@ static void dwc3_ep0_complete_data(struc
 		dwc->ep0_bounced = false;
 	} else {
 		transferred = ur->length - trb.length;
-		ur->actual += transferred;
 	}
 
+	ur->actual += transferred;
+
 	if ((epnum & 1) && ur->actual < ur->length) {
 		/* for some reason we did not get everything out */
 


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