net: warn about spaces in device names

Some commands operate on eth device names (like 'mii'), but those cannot
be passed on the command line as one argument.  So detect devices like
these and warn about them so someone will fix it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/eth.c b/net/eth.c
index 83d559c120..de6d5c6040 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -234,6 +234,9 @@ int eth_initialize(bd_t *bis)
 				puts (" [PRIME]");
 			}
 
+			if (strchr(dev->name, ' '))
+				puts("\nWarning: eth device name has a space!\n");
+
 			eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
 
 			if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {