serial: add support for the Lava Quattro PCI quad-port 16550A card

[safe/jmp/linux-2.6] / drivers / net / mdio.c

diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index dc45e98..21f8754 100644 (file)
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -14,6 +14,10 @@
 #include <linux/mdio.h>
 #include <linux/module.h>
 
+MODULE_DESCRIPTION("Generic support for MDIO-compatible transceivers");
+MODULE_AUTHOR("Copyright 2006-2009 Solarflare Communications Inc.");
+MODULE_LICENSE("GPL");
+
 /**
  * mdio45_probe - probe for an MDIO (clause 45) device
  * @mdio: MDIO interface
@@ -105,13 +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;
                }
        }
@@ -369,10 +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;