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>

diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 7e43f68..2a5359c 100644 (file)
--- 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);
 }
 
 /*