cmd: mvebu/bubt: Fix cmd main return value on error

Negative return value from cmd main function cause U-Boot to print criplic
error message: exit not allowed from main input shell.

Set return value on error to 1.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/cmd/mvebu/bubt.c b/cmd/mvebu/bubt.c
index 276069a..ffa05bc 100644 (file)
--- a/cmd/mvebu/bubt.c
+++ b/cmd/mvebu/bubt.c
@@ -870,11 +870,11 @@ int do_bubt_cmd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
        dst = find_bubt_dev(dst_dev_name);
        if (!dst) {
                printf("Error: Unknown destination \"%s\"\n", dst_dev_name);
-               return -EINVAL;
+               return 1;
        }
 
        if (!bubt_is_dev_active(dst))
-               return -ENODEV;
+               return 1;
 
        /* Figure out the source device */
        src = find_bubt_dev(src_dev_name);
@@ -891,15 +891,15 @@ int do_bubt_cmd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 
        image_size = bubt_read_file(src);
        if (!image_size)
-               return -EIO;
+               return 1;
 
        err = bubt_verify(dst);
        if (err)
-               return err;
+               return 1;
 
        err = bubt_write_file(dst, image_size);
        if (err)
-               return err;
+               return 1;
 
        return 0;
 }