[PATCH v1] dm: Convert to use ERR_CAST()

From: Yuesong Li
Date: Thu Aug 29 2024 - 23:17:15 EST


Use ERR_CAST() as it is designed for casting an error pointer to
another type.

This macro utilizes the __force and __must_check modifiers, which instruct
the compiler to verify for errors at the locations where it is employed.

Signed-off-by: Yuesong Li <liyuesong@xxxxxxxx>
---
drivers/md/dm-thin.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index a0c1620e90c8..89632ce97760 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2948,7 +2948,7 @@ static struct pool *pool_create(struct mapped_device *pool_md,
pmd = dm_pool_metadata_open(metadata_dev, block_size, format_device);
if (IS_ERR(pmd)) {
*error = "Error creating metadata object";
- return (struct pool *)pmd;
+ return ERR_CAST(pmd);
}

pool = kzalloc(sizeof(*pool), GFP_KERNEL);
--
2.34.1