From: lyz <lyz@rock-chips.com>
Date: Wed, 23 Oct 2013 07:50:05 +0000 (+0800)
Subject: usb: fix EP0 does not handle req->zero bug
X-Git-Tag: firefly_0821_release~6539
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=14032f9d90131ceb0f63a9f31b392848d80ba011;p=firefly-linux-kernel-4.4.55.git

usb: fix EP0 does not handle req->zero bug
---

diff --git a/drivers/usb/dwc_otg/dwc_otg_pcd.c b/drivers/usb/dwc_otg/dwc_otg_pcd.c
index 16222daa83b9..e116c65e0f7d 100755
--- a/drivers/usb/dwc_otg/dwc_otg_pcd.c
+++ b/drivers/usb/dwc_otg/dwc_otg_pcd.c
@@ -652,8 +652,10 @@ static int dwc_otg_pcd_ep_queue(struct usb_ep *_ep,
 				DWC_DEBUGPL(DBG_PCD, 
 								"%s ep0: EP0_IN_DATA_PHASE\n", 
 								__func__);
-			    if((_req->length % MAX_EP0_SIZE) == 0)
-			        ep->dwc_ep.sent_zlp = 1;
+			    if((_req->length % MAX_EP0_SIZE) == 0){
+			        if(_req->zero)
+			            ep->dwc_ep.sent_zlp = 1;
+			        }
 				break;
 
 			case EP0_OUT_DATA_PHASE: