[PATCH] bcache: fix compilation warning

[Vincent StehlÃ]

The release function of a block device does not return a value; make
release_dev void. This fixes the following warning:

  drivers/md/bcache/super.c:653:2: warning: initialization from incompatible pointer type [enabled by default]
  drivers/md/bcache/super.c:653:2: warning: (near initialization for âbcache_ops.releaseâ) [enabled by default]

Signed-off-by: Vincent Stehlà <vincent.stehle@xxxxxxxxxxx>
---
 drivers/md/bcache/super.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index c8046bc..b09beb2 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -634,11 +634,10 @@ static int open_dev(struct block_device *b, fmode_t mode)
 	return 0;
 }
 
-static int release_dev(struct gendisk *b, fmode_t mode)
+static void release_dev(struct gendisk *b, fmode_t mode)
 {
 	struct bcache_device *d = b->private_data;
 	closure_put(&d->cl);
-	return 0;
 }
 
 static int ioctl_dev(struct block_device *b, fmode_t mode,
-- 
1.7.10.4

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