[PATCH v3 3/4] loop: Use blk_validate_block_size() to validate block size

[Xie Yongji <xieyongji@xxxxxxxxxxxxx>]

Remove loop_validate_block_size() and use the block layer helper
to validate block size.

Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx>
---
 drivers/block/loop.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 7bf4686af774..dfc72a1f6500 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -273,19 +273,6 @@ static void __loop_update_dio(struct loop_device *lo, bool dio)
 }
 
 /**
- * loop_validate_block_size() - validates the passed in block size
- * @bsize: size to validate
- */
-static int
-loop_validate_block_size(unsigned short bsize)
-{
-	if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
  * loop_set_size() - sets device size and notifies userspace
  * @lo: struct loop_device to set the size for
  * @size: new size of the loop device
@@ -1236,7 +1223,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
 	}
 
 	if (config->block_size) {
-		error = loop_validate_block_size(config->block_size);
+		error = blk_validate_block_size(config->block_size);
 		if (error)
 			goto out_unlock;
 	}
@@ -1759,7 +1746,7 @@ static int loop_set_block_size(struct loop_device *lo, unsigned long arg)
 	if (lo->lo_state != Lo_bound)
 		return -ENXIO;
 
-	err = loop_validate_block_size(arg);
+	err = blk_validate_block_size(arg);
 	if (err)
 		return err;
 
-- 
2.11.0