diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-04-09 01:36:28 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-04-09 01:38:55 -0400 |
| commit | c65390f4dd49755863f6d772ec538ee4757c08d7 (patch) | |
| tree | 865105e059ac8d78da90d371542e888995e0581e /drivers/mtd/mtdchar.c | |
| parent | 0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff) | |
| download | linux-c65390f4dd49755863f6d772ec538ee4757c08d7.tar.bz2 | |
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.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 94eb05b1afdf..58fc65f5c817 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); |