common: mmc: unsigned char compared against 0

"enable" is unsigned char type and its value will not be
negative, so discard "enable < 0".

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Cc: Diego Santa Cruz <Diego.SantaCruz@spinetix.com>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index dfc1ec850e20a939bcecf24c1d377da84d034fd7..a6b7313e4a44d1f895a6a9e2a55311b85bcf5487 100644 (file)
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -747,7 +747,7 @@ static int do_mmc_rst_func(cmd_tbl_t *cmdtp, int flag,
        dev = simple_strtoul(argv[1], NULL, 10);
        enable = simple_strtoul(argv[2], NULL, 10);
 
-       if (enable > 2 || enable < 0) {
+       if (enable > 2) {
                puts("Invalid RST_n_ENABLE value\n");
                return CMD_RET_USAGE;
        }