[PATCH 2/2] block: fixup the kerneldoc for lookup_bdev

[Christoph Hellwig <hch@lst.de>]

Document the new dev parameter and the changed return value convention.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 4e7b5671c6a8 ("block: remove i_bdev")
---
 fs/block_dev.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 7633e5ac0885f7..d6ee0bb7005538 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1828,10 +1828,11 @@ const struct file_operations def_blk_fops = {
 /**
  * lookup_bdev  - lookup a struct block_device by name
  * @pathname:	special file representing the block device
+ * @dev:	returns the dev_t for the device
  *
- * Get a reference to the blockdevice at @pathname in the current
- * namespace if possible and return it.  Return ERR_PTR(error)
- * otherwise.
+ * Find the dev_t for the block device at @pathname.  Returns 0 if there is a
+ * block device at @pathname, or a negative errno value if not.  The dev_t for
+ * the block device is placed in the variable pointed to by the @dev parameter.
  */
 int lookup_bdev(const char *pathname, dev_t *dev)
 {
-- 
2.29.2