| Message ID | 1441810868-7212-1-git-send-email-abrodkin@synopsys.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Alexey Brodkin <Alexey.Brodkin@synopsys.com> Date: Wed, 9 Sep 2015 18:01:08 +0300 > 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.shtylyov@cogentembedded.com> > Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> > Cc: linux-kernel@vger.kernel.org > Cc: stable@vger.kernel.org > Cc: David Miller <davem@davemloft.net> > Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 864b476..925f2f8 100644 --- 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_device *dev) 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); }
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.shtylyov@cogentembedded.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Cc: David Miller <davem@davemloft.net> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> --- Changes compared to v3: * Remove "else" branch after "return" as suggested by Sergei. Changes compared to v2: * Updated commit message with mention of of_phy_connect() instead of of_phy_attach(). * Return ENODEV in case of of_phy_connect() failure Changes compared to v1: * Use IS_ERR_OR_NULL() instead of discrete checks for null and err drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)