Hello.
On 9/8/2015 11:43 AM, Alexey Brodkin wrote:
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@xxxxxxxxxxxxxxxxxx>
Cc: Giuseppe Cavallaro <peppe.cavallaro@xxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Cc: David Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
---
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 | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 864b476..e2c9c86 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -837,9 +837,12 @@ 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);
- return PTR_ERR(phydev);
+ if (!phydev)
+ return -ENODEV;
+ else
+ return PTR_ERR(phydev);
Don't need *else* after *return* and scripts/checkpatch.pl should have
complained about that.
MBR, Sergei
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