[PATCH 5.4 182/475] dm crypt: fix get_key_size compiler warning if !CONFIG_KEYS

From: Greg Kroah-Hartman
Date: Thu Apr 14 2022 - 10:56:41 EST


From: Aashish Sharma <shraash@xxxxxxxxxx>

[ Upstream commit 6fc51504388c1a1a53db8faafe9fff78fccc7c87 ]

Explicitly convert unsigned int in the right of the conditional
expression to int to match the left side operand and the return type,
fixing the following compiler warning:

drivers/md/dm-crypt.c:2593:43: warning: signed and unsigned
type in conditional expression [-Wsign-compare]

Fixes: c538f6ec9f56 ("dm crypt: add ability to use keys from the kernel key retention service")
Signed-off-by: Aashish Sharma <shraash@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/md/dm-crypt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 571c04e70343..3ed8ca47bc6e 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2010,7 +2010,7 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string

static int get_key_size(char **key_string)
{
- return (*key_string[0] == ':') ? -EINVAL : strlen(*key_string) >> 1;
+ return (*key_string[0] == ':') ? -EINVAL : (int)(strlen(*key_string) >> 1);
}

#endif
--
2.34.1