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authorAl Viro <viro@zeniv.linux.org.uk>2012-04-09 01:36:28 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-04-09 01:38:55 -0400
commitc65390f4dd49755863f6d772ec538ee4757c08d7 (patch)
tree865105e059ac8d78da90d371542e888995e0581e /drivers/mtd/mtdchar.c
parent0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff)
downloadlinux-c65390f4dd49755863f6d772ec538ee4757c08d7.tar.gz
fix breakage in mtdchar_open(), sanitize failure exits
simple_release_fs() should be only done on failure there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/mtd/mtdchar.c')
-rw-r--r--drivers/mtd/mtdchar.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 94eb05b1afd..58fc65f5c81 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -106,16 +106,14 @@ static int mtdchar_open(struct inode *inode, struct file *file)
}
if (mtd->type == MTD_ABSENT) {
- put_mtd_device(mtd);
ret = -ENODEV;
- goto out;
+ goto out1;
}
mtd_ino = iget_locked(mnt->mnt_sb, devnum);
if (!mtd_ino) {
- put_mtd_device(mtd);
ret = -ENOMEM;
- goto out;
+ goto out1;
}
if (mtd_ino->i_state & I_NEW) {
mtd_ino->i_private = mtd;
@@ -127,23 +125,25 @@ static int mtdchar_open(struct inode *inode, struct file *file)
/* You can't open it RW if it's not a writeable device */
if ((file->f_mode & FMODE_WRITE) && !(mtd->flags & MTD_WRITEABLE)) {
- iput(mtd_ino);
- put_mtd_device(mtd);
ret = -EACCES;
- goto out;
+ goto out2;
}
mfi = kzalloc(sizeof(*mfi), GFP_KERNEL);
if (!mfi) {
- iput(mtd_ino);
- put_mtd_device(mtd);
ret = -ENOMEM;
- goto out;
+ goto out2;
}
mfi->ino = mtd_ino;
mfi->mtd = mtd;
file->private_data = mfi;
+ mutex_unlock(&mtd_mutex);
+ return 0;
+out2:
+ iput(mtd_ino);
+out1:
+ put_mtd_device(mtd);
out:
mutex_unlock(&mtd_mutex);
simple_release_fs(&mnt, &count);