diff options
Diffstat (limited to 'cmd/acpi.c')
| -rw-r--r-- | cmd/acpi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cmd/acpi.c b/cmd/acpi.c index 89970417a0..0c14409242 100644 --- a/cmd/acpi.c +++ b/cmd/acpi.c @@ -160,6 +160,9 @@ static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc, char sig[ACPI_NAME_LEN]; int ret; + if (argc < 2) + return CMD_RET_USAGE; + name = argv[1]; if (strlen(name) != ACPI_NAME_LEN) { printf("Table name '%s' must be four characters\n", name); |