[PATCH] [FS] Print error message for unknown device type

[Wolfgang Denk]

File system commands like "ls" etc. require a device type parameter.
If an unknown type is specified, they return an error code but no
visible feedback to the user:

 -> ls FOOBAR 1:1 /
 ->

Add an error message to make clear what happens, and why.

Signed-off-by: Wolfgang Denk <w...@denx.de>
---
 disk/part.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/disk/part.c b/disk/part.c
index 8982ef3bae..14000835c8 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -512,8 +512,10 @@ int blk_get_device_part_str(const char *ifname, const char 
*dev_part_str,
 
        /* Look up the device */
        dev = blk_get_device_by_str(ifname, dev_str, dev_desc);
-       if (dev < 0)
+       if (dev < 0) {
+               printf("** Unknown device type %s **\n", ifname);
                goto cleanup;
+       }
 
        /* Convert partition ID string to number */
        if (!part_str || !*part_str) {
-- 
2.23.0