[PATCH] USB: Fix kernel oops with g_ether and Windows

[Maxim Osipov]

Hello,

Please find attached patch for
https://bugzilla.kernel.org/show_bug.cgi?id=16023 problem.

Kind regards,
Maxim
From 43568dec4f387da4562d5bc81557c642a468b685 Mon Sep 17 00:00:00 2001
From: Maxim Osipov <maxim.osipov@xxxxxxxxx>
Date: Thu, 19 Aug 2010 07:25:28 +0400
Subject: [PATCH] USB: Fix kernel oops with g_ether and Windows

Signed-off-by: Maxim Osipov <maxim.osipov@xxxxxxxxx>
---
 drivers/usb/gadget/rndis.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index 5c0d06c..1043da1 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -292,9 +292,13 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
 	/* mandatory */
 	case OID_GEN_VENDOR_DESCRIPTION:
 		pr_debug("%s: OID_GEN_VENDOR_DESCRIPTION\n", __func__);
-		length = strlen (rndis_per_dev_params [configNr].vendorDescr);
-		memcpy (outbuf,
-			rndis_per_dev_params [configNr].vendorDescr, length);
+		if ( rndis_per_dev_params [configNr].vendorDescr ) {
+			length = strlen (rndis_per_dev_params [configNr].vendorDescr);
+			memcpy (outbuf,
+				rndis_per_dev_params [configNr].vendorDescr, length);
+		} else {
+			outbuf[0] = 0;
+		}
 		retval = 0;
 		break;
 
-- 
1.7.1