[PATCH] dm-inlinecrypt: document inlinecrypt_ctx.key_size

Add a missing kernel-doc description for the key_size member
of struct inlinecrypt_ctx to fix a W=1 documentation warning
reported by the kernel test robot.

Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Linlin Zhang <[email protected]>
---
 drivers/md/dm-inlinecrypt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-inlinecrypt.c b/drivers/md/dm-inlinecrypt.c
index 40d48ba73e23..bd8e58a028c5 100644
--- a/drivers/md/dm-inlinecrypt.c
+++ b/drivers/md/dm-inlinecrypt.c
@@ -28,6 +28,7 @@ static const struct dm_inlinecrypt_cipher {
  * @start: starting sector of the range of @dev which this target actually maps.
  *	   For this purpose a "sector" is 512 bytes.
  * @cipher_string: the name of the encryption algorithm being used
+ * @key_size: size of the encryption key in bytes
  * @iv_offset: starting offset for IVs.  IVs are generated as if the target were
  *	       preceded by @iv_offset 512-byte sectors.
  * @sector_size: crypto sector size in bytes (usually 4096)
-- 
2.34.1