common: mii: Do not allow to exceed max phy limit
Phy can have addresses 0-31. Check this boundary to ensure that user
can't call commands on phy address 32 and more.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/common/cmd_mii.c b/common/cmd_mii.c
index 5e9079d..7ef7532 100644
--- a/common/cmd_mii.c
+++ b/common/cmd_mii.c
@@ -314,6 +314,11 @@
mask = simple_strtoul(argv[5], NULL, 16);
}
+ if (addrhi > 31) {
+ printf("Incorrect PHY address. Range should be 0-31\n");
+ return CMD_RET_USAGE;
+ }
+
/* use current device */
devname = miiphy_get_current_dev();