block/ioctl.c and fs/partition/check.c: check value returned by add_partition()

Now that add_partition() has been aught to propagate errors, let's check them.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Abdel Benamrouche <draconux@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index 52d6385216a..77185e5c026 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -17,6 +17,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
         long long start, length;
         int part;
         int i;
+        int err;
 
         if (!capable(CAP_SYS_ADMIN))
                 return -EACCES;
@@ -61,9 +62,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
                                 }
                         }
                         /* all seems OK */
-                        add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
+                        err = add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
                         mutex_unlock(&bdev->bd_mutex);
-                        return 0;
+                        return err;
                 case BLKPG_DEL_PARTITION:
                         if (!disk->part[part-1])
                                 return -ENXIO;