From: Dan Carpenter <error27@gmail.com>
Date: Fri, 7 May 2010 08:59:06 +0000 (+0200)
Subject: logfs: handle errors from get_mtd_device()
X-Git-Tag: v2.6.35-rc1~530^2~1
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ccf31c10f125ab5233c8517f91d4b3bd0bd60936;p=pandora-kernel.git

logfs: handle errors from get_mtd_device()

The get_mtd_device() function returns error pointers on failure and if we
don't handle it, it leads to a crash.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Joern Engel <joern@logfs.org>
---

diff --git a/fs/logfs/dev_mtd.c b/fs/logfs/dev_mtd.c
index cafb6ef2e05b..b02a4020241a 100644
--- a/fs/logfs/dev_mtd.c
+++ b/fs/logfs/dev_mtd.c
@@ -250,5 +250,7 @@ int logfs_get_sb_mtd(struct file_system_type *type, int flags,
 	const struct logfs_device_ops *devops = &mtd_devops;
 
 	mtd = get_mtd_device(NULL, mtdnr);
+	if (IS_ERR(mtd))
+		return PTR_ERR(mtd);
 	return logfs_get_sb_device(type, flags, mtd, NULL, devops, mnt);
 }