cmd: mdio: prevent data abort when no mdio bus is found
Calling 'mdio read ...' currently leads to a data abort when no mdio
bus is found.
To fix this, check if 'bus' is a valid pointer before accessing it.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/cmd/mdio.c b/cmd/mdio.c
index a6fa926..add6440 100644
--- a/cmd/mdio.c
+++ b/cmd/mdio.c
@@ -268,6 +268,11 @@
break;
}
+ if (!bus) {
+ puts("No MDIO bus found\n");
+ return CMD_RET_FAILURE;
+ }
+
if (op[0] == 'l') {
mdio_list_devices();