[U-Boot] [PATCH] 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 ---

common/cmd_mii.c | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/common/cmd_mii.c b/common/cmd_mii.c index 5e9079da0487..7ef7532a502a 100644 --- a/common/cmd_mii.c +++ b/common/cmd_mii.c @@ -314,6 +314,11 @@ static int do_mii(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 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();