diff options
Diffstat (limited to 'drivers/mtd/ubi/build.c')
| -rw-r--r-- | drivers/mtd/ubi/build.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 7091fca0fb44..ef3618299494 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -1147,22 +1147,26 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway) */ static struct mtd_info * __init open_mtd_by_chdev(const char *mtd_dev) { - int err, major, minor, mode; + int err, minor; struct path path; + struct kstat stat; /* Probably this is an MTD character device node path */ err = kern_path(mtd_dev, LOOKUP_FOLLOW, &path); if (err) return ERR_PTR(err); - /* MTD device number is defined by the major / minor numbers */ - major = imajor(d_backing_inode(path.dentry)); - minor = iminor(d_backing_inode(path.dentry)); - mode = d_backing_inode(path.dentry)->i_mode; + err = vfs_getattr(&path, &stat); path_put(&path); - if (major != MTD_CHAR_MAJOR || !S_ISCHR(mode)) + if (err) + return ERR_PTR(err); + + /* MTD device number is defined by the major / minor numbers */ + if (MAJOR(stat.rdev) != MTD_CHAR_MAJOR || !S_ISCHR(stat.mode)) return ERR_PTR(-EINVAL); + minor = MINOR(stat.rdev); + if (minor & 1) /* * Just do not think the "/dev/mtdrX" devices support is need, |