f2fs: use strncasecmp() simplify the string comparison

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 1 insertions, 11 deletions

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 7e43f6829afd..2a5359c990fc 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -83,21 +83,11 @@ static int is_multimedia_file(const unsigned char *s, const char *sub)
 {
         size_t slen = strlen(s);
         size_t sublen = strlen(sub);
-        int ret;
 
         if (sublen > slen)
                 return 0;
 
-        ret = memcmp(s + slen - sublen, sub, sublen);
-        if (ret) {      /* compare upper case */
-                int i;
-                char upper_sub[8];
-                for (i = 0; i < sublen && i < sizeof(upper_sub); i++)
-                        upper_sub[i] = toupper(sub[i]);
-                return !memcmp(s + slen - sublen, upper_sub, sublen);
-        }
-
-        return !ret;
+        return !strncasecmp(s + slen - sublen, sub, sublen);
 }
 
 /*