diff options
| -rw-r--r-- | flash_erase.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/flash_erase.c b/flash_erase.c index 870cf40..cf263fe 100644 --- a/flash_erase.c +++ b/flash_erase.c @@ -7,6 +7,7 @@ #include <stdio.h> #include <fcntl.h> #include <time.h> +#include <string.h> #include <sys/ioctl.h> #include <sys/mount.h> #include <mtd/mtd-user.h> @@ -141,10 +142,10 @@ int main(int argc,char *argv[]) int unlock; int res = 0; - if (1 >= argc) - { - fprintf(stderr,"You must specify a device\n"); - return 16; + if (1 >= argc || !strcmp(argv[1], "-h") || !strcmp (argv[1], "--help") ) { + printf("Usage: flash_erase MTD-device [start] [cnt (# erase blocks)] [lock]\n" + " flash_erase -h | --help\n") ; + return 16 ; } if (argc > 2) |