From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 14 Apr 2006 20:42:03 +0000 (-0400)
Subject: [PATCH] USB: net2280: send 0-length packets for ep0
X-Git-Tag: v2.6.17-rc4~137^2~6
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=317e83b842ba39776054219ae29844127876416a;p=linux-2.6

[PATCH] USB: net2280: send 0-length packets for ep0

This patch (as669) fixes a bug in the net2280 driver.  Now it will
properly send zero-length packets on ep0 until the control status stage
occurs.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 2d5cededcb..c842b194cf 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -2280,9 +2280,7 @@ static void handle_ep_small (struct net2280_ep *ep)
 		/* if we wrote it all, we're usually done */
 		if (req->req.actual == req->req.length) {
 			if (ep->num == 0) {
-				/* wait for control status */
-				if (mode != 2)
-					req = NULL;
+				/* send zlps until the status stage */
 			} else if (!req->req.zero || len != ep->ep.maxpacket)
 				mode = 2;
 		}