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dm-pcache: use int type to store negative error codes 

Change the 'ret' variable from u32 to int to store negative error codes or
zero returned by cache_kset_close().

Storing the negative error codes in unsigned type, doesn't cause an issue
at runtime but it's ugly. Additionally, assigning negative error codes to
unsigned type may trigger a GCC warning when the -Wsign-conversion flag
is enabled.

No effect on runtime.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
This commit is contained in:
Qianfeng Rong 2025-08-29 21:37:48 +08:00 committed by Mikulas Patocka
parent 9f5c33bddd
commit 4466dd3d71
1 changed files with 2 additions and 1 deletions
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3
drivers/md/dm-pcache/cache_req.c
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@ -805,7 +805,8 @@ err:
int cache_flush(struct pcache_cache *cache)
{
struct pcache_cache_kset *kset;
u32 i, ret;
int ret;
u32 i;
for (i = 0; i < cache->n_ksets; i++) {
kset = get_kset(cache, i);