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path: root/drivers/net/mdio.c
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Diffstat (limited to 'drivers/net/mdio.c')
-rw-r--r--drivers/net/mdio.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index 6851bdb2ce2..21f8754fcf4 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -109,13 +109,20 @@ int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmd_mask)
if (mmd_mask & (1 << devad)) {
mmd_mask &= ~(1 << devad);
- /* Read twice because link state is latched and a
- * read moves the current state into the register */
+ /* Reset the latched status and fault flags */
mdio->mdio_read(mdio->dev, mdio->prtad,
devad, MDIO_STAT1);
+ if (devad == MDIO_MMD_PMAPMD || devad == MDIO_MMD_PCS ||
+ devad == MDIO_MMD_PHYXS || devad == MDIO_MMD_DTEXS)
+ mdio->mdio_read(mdio->dev, mdio->prtad,
+ devad, MDIO_STAT2);
+
+ /* Check the current status and fault flags */
reg = mdio->mdio_read(mdio->dev, mdio->prtad,
devad, MDIO_STAT1);
- if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
+ if (reg < 0 ||
+ (reg & (MDIO_STAT1_FAULT | MDIO_STAT1_LSTATUS)) !=
+ MDIO_STAT1_LSTATUS)
return false;
}
}
@@ -373,10 +380,7 @@ int mdio_mii_ioctl(const struct mdio_if_info *mdio,
cmd = SIOCGMIIREG;
break;
case SIOCGMIIREG:
- break;
case SIOCSMIIREG:
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
break;
default:
return -EOPNOTSUPP;