diff options
| -rw-r--r-- | common/cmd_mmc.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c index 8c53a10..9f3d6c5 100644 --- a/common/cmd_mmc.c +++ b/common/cmd_mmc.c @@ -164,8 +164,12 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } if (strcmp(argv[1], "rescan") == 0) { - struct mmc *mmc = find_mmc_device(curr_device); + struct mmc *mmc; + if (argc != 2) + return CMD_RET_USAGE; + + mmc = find_mmc_device(curr_device); if (!mmc) { printf("no mmc device at slot %x\n", curr_device); return 1; @@ -179,8 +183,12 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return 0; } else if (strncmp(argv[1], "part", 4) == 0) { block_dev_desc_t *mmc_dev; - struct mmc *mmc = find_mmc_device(curr_device); + struct mmc *mmc; + + if (argc != 2) + return CMD_RET_USAGE; + mmc = find_mmc_device(curr_device); if (!mmc) { printf("no mmc device at slot %x\n", curr_device); return 1; @@ -196,6 +204,8 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) puts("get mmc type error!\n"); return 1; } else if (strcmp(argv[1], "list") == 0) { + if (argc != 2) + return CMD_RET_USAGE; print_mmc_devices('\n'); return 0; } else if (strcmp(argv[1], "dev") == 0) { |