From 037d3656adbd7e8cb848f01cf5dec423ed76bbe7 Mon Sep 17 00:00:00 2001
From: Maxim Osipov <maxim.osipov@gmail.com>
Date: Sat, 21 Aug 2010 14:54:06 +0400
Subject: [PATCH] USB: Fix kernel oops with g_ether and Windows
Please find attached patch for
https://bugzilla.kernel.org/show_bug.cgi?id=16023 problem.
Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/gadget/rndis.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index ee337f72c6447..972d5ddd1e180 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -293,9 +293,13 @@ 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;