From: NeilBrown <neilb@suse.de>
Date: Tue, 30 Sep 2014 05:36:28 +0000 (+1000)
Subject: md: remove unnecessary test for MD_MAJOR in md_ioctl()
X-Git-Tag: v3.18-rc1~26^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=326eb17d73a6b424ed7c47c693ff53721618fc48;p=platform%2Fkernel%2Flinux-exynos.git

md: remove unnecessary test for MD_MAJOR in md_ioctl()

unknown ioctls no longer get this deep into md_ioctl since
md_ioctl_valid() was introduced in 3.14.
So remove the test and the misleading comment.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 9939122..90e1537 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6559,11 +6559,8 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 	/*
 	 * The remaining ioctls are changing the state of the
 	 * superblock, so we do not allow them on read-only arrays.
-	 * However non-MD ioctls (e.g. get-size) will still come through
-	 * here and hit the 'default' below, so only disallow
-	 * 'md' ioctls, and switch to rw mode if started auto-readonly.
 	 */
-	if (_IOC_TYPE(cmd) == MD_MAJOR && mddev->ro && mddev->pers) {
+	if (mddev->ro && mddev->pers) {
 		if (mddev->ro == 2) {
 			mddev->ro = 0;
 			sysfs_notify_dirent_safe(mddev->sysfs_state);