From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Date: Sun, 16 Dec 2007 14:46:57 +0000 (+0200)
Subject: UBI: bugfix: dont oops with NULL module parameter
X-Git-Tag: v2.6.25-rc1~296^2~62
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=77c722dde9975361051c5530475f8f92ed67a506;p=karo-tx-linux.git

UBI: bugfix: dont oops with NULL module parameter

E.g., it oopsed in case of: modprobe ubi mtd = 0

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
---

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 9b94427be145..b85ca186afc6 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -845,6 +845,9 @@ static int __init ubi_mtd_param_parse(const char *val, struct kernel_param *kp)
 	char *pbuf = &buf[0];
 	char *tokens[3] = {NULL, NULL, NULL};
 
+	if (!val)
+		return -EINVAL;
+
 	if (mtd_devs == UBI_MAX_DEVICES) {
 		printk("UBI error: too many parameters, max. is %d\n",
 		       UBI_MAX_DEVICES);