4.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexey Brodkin <alexey.brod...@synopsys.com>
commit dfc50fcaad574e5c8c85cbc83eca1426b2413fa4 upstream.
Current check of phydev with IS_ERR(phydev) may make not much sense
because of_phy_connect() returns NULL on failure instead of error value.
Still for checking result of phy_connect() IS_ERR() makes perfect sense.
So let's use combined check IS_ERR_OR_NULL() that covers both cases.
Cc: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>
Cc: Giuseppe Cavallaro <peppe.cavall...@st.com>
Cc: linux-kernel@vger.kernel.org
Cc: David Miller <da...@davemloft.net>
Signed-off-by: Alexey Brodkin <abrod...@synopsys.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -837,8 +837,11 @@ static int stmmac_init_phy(struct net_de
interface);
}
- if (IS_ERR(phydev)) {
+ if (IS_ERR_OR_NULL(phydev)) {
pr_err("%s: Could not attach to PHY\n", dev->name);
+ if (!phydev)
+ return -ENODEV;
+
return PTR_ERR(phydev);
}
--
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