static int do_lcd_puts (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
        if (argc < 2) {
-               printf("%s", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }
        lcd_puts(argv[1]);
 static int do_lcd_putc (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
        if (argc < 2) {
-               printf("%s", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }
        lcd_putc((char)argv[1][0]);
        char cur_addr;
 
        if (argc < 3) {
-               printf("%s", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }
 
 
        int led_no;
 
        if (argc != 3) {
-               printf("%s", cmd_tp->usage);
+               cmd_usage(cmd_tp);
                return -1;
        }
 
        led_no = simple_strtoul(argv[1], NULL, 16);
        if (led_no != 1 && led_no != 2) {
-               printf("%s", cmd_tp->usage);
+               cmd_usage(cmd_tp);
                return -1;
        }
 
                else
                        gpio_write_bit(31, 0);
        } else {
-               printf("%s", cmd_tp->usage);
+               cmd_usage(cmd_tp);
                return -1;
        }
 
 
 static int do_lcd_puts(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
        if (argc < 2) {
-               printf("%s", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }
        lcd_puts(argv[1]);
 static int do_lcd_putc(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
        if (argc < 2) {
-               printf("%s", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }
        lcd_putc((char)argv[1][0]);
        char cur_addr;
 
        if (argc < 3) {
-               printf("%s", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }