From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 15 Dec 2017 16:09:36 +0000 (+0000)
Subject: sfp: fix non-detection of PHY
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=20b56ed9f8adfb9a7fb1c878878c54aa4ed645c1;p=openwrt%2Fstaging%2Fblogic.git

sfp: fix non-detection of PHY

The detection of a PHY changed in commit e98a3aabf85f ("mdio_bus: don't
return NULL from mdiobus_scan()") which now causes sfp to print an
error message.  Update for this change.

Fixes: 73970055450e ("sfp: add SFP module support")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 96511557eb2c..1a958c7b912d 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -356,12 +356,12 @@ static void sfp_sm_probe_phy(struct sfp *sfp)
 	msleep(T_PHY_RESET_MS);
 
 	phy = mdiobus_scan(sfp->i2c_mii, SFP_PHY_ADDR);
-	if (IS_ERR(phy)) {
-		dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy));
+	if (phy == ERR_PTR(-ENODEV)) {
+		dev_info(sfp->dev, "no PHY detected\n");
 		return;
 	}
-	if (!phy) {
-		dev_info(sfp->dev, "no PHY detected\n");
+	if (IS_ERR(phy)) {
+		dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy));
 		return;
 	}