From 69cd3bdff881de4f5b853433f99142c5b7163978 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 14 Sep 2021 14:00:38 +0300 Subject: [PATCH] phy: ti: gmii-sel: check of_get_address() for failure [ Upstream commit 8d55027f4e2c04146a75fb63371ab96ccc887f2c ] Smatch complains that if of_get_address() returns NULL, then "size" isn't initialized. Also it would lead to an Oops. Fixes: 7f78322cdd67 ("phy: ti: gmii-sel: retrieve ports number and base offset from dt") Signed-off-by: Dan Carpenter Reviewed-by: Grygorii Strashko Link: https://lore.kernel.org/r/20210914110038.GB11657@kili Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/phy/ti/phy-gmii-sel.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c index 5fd2e8a..d0ab697 100644 --- a/drivers/phy/ti/phy-gmii-sel.c +++ b/drivers/phy/ti/phy-gmii-sel.c @@ -320,6 +320,8 @@ static int phy_gmii_sel_init_ports(struct phy_gmii_sel_priv *priv) u64 size; offset = of_get_address(dev->of_node, 0, &size, NULL); + if (!offset) + return -EINVAL; priv->num_ports = size / sizeof(u32); if (!priv->num_ports) return -EINVAL; -- 2.7.4