mtd: nand: switch `check_pattern()' to standard `memcmp()'

A portion of the `check_pattern()' function is basically a `memcmp()'.
Since it's possible for `memcmp()' to be optimized for a particular
architecture, we should use it instead.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>

diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 783093d1a2e512d0a0225594362ffa472b50e336..5c9c0b2f09d4ad81b762059eb4795197fafc711e 100644 (file)
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -107,10 +107,8 @@ static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_desc
        p += end;
 
        /* Compare the pattern */
-       for (i = 0; i < td->len; i++) {
-               if (p[i] != td->pattern[i])
-                       return -1;
-       }
+       if (memcmp(p, td->pattern, td->len))
+               return -1;
 
        if (td->options & NAND_BBT_SCANEMPTY) {
                p += td->len;