From: Al Viro Date: Thu, 24 Mar 2016 18:43:24 +0000 (-0400) Subject: mtd: switch open_mtd_by_chdev() to use of vfs_stat() X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=87f15d4add758fb7fc76655721af94be57a4c17d;p=deliverable%2Flinux.git mtd: switch open_mtd_by_chdev() to use of vfs_stat() Signed-off-by: Al Viro --- diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 22fd19c0c5d3..a7d1febf667a 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -1142,22 +1142,19 @@ 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; - struct path path; + struct kstat stat; + int err, minor; /* Probably this is an MTD character device node path */ - err = kern_path(mtd_dev, LOOKUP_FOLLOW, &path); + err = vfs_stat(mtd_dev, &stat); 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; - path_put(&path); - if (major != MTD_CHAR_MAJOR || !S_ISCHR(mode)) + 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,