From 63534a79e2fb1e4102fe38f339ecb891682a781e Mon Sep 17 00:00:00 2001 From: Vladimir Barinov Date: Fri, 23 Sep 2016 18:26:53 +0300 Subject: [PATCH] net: ravb: fix unsafe phy access This fixes the ravb driver crash for phy/phyless glue that do not have writeext field Signed-off-by: Vladimir Barinov --- drivers/net/ravb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ravb.c b/drivers/net/ravb.c index f4d7aed..5d90a3e 100644 --- a/drivers/net/ravb.c +++ b/drivers/net/ravb.c @@ -475,7 +475,8 @@ static int ravb_config(struct ravb_dev *eth, bd_t *bd) ravb_write(eth, ECMR_CHG_DM | ECMR_RE | ECMR_TE, ECMR); } - phy->drv->writeext(phy, -1, 0x02, 0x08, (0x0f<<5) | 0x19); + if (phy->drv->writeext) + phy->drv->writeext(phy, -1, 0x02, 0x08, (0x0f<<5) | 0x19); err_phy_cfg: return ret; -- 1.9.1