net: phy: smsc: move smsc_phy_config_init reset part in a soft_reset function

On the one hand, phy_device.c provides a generic reset function if the phy
driver does not provide a soft_reset pointer. This generic reset does not take
into account the state of the phy, with a potential failure if the phy is in
powerdown mode. On the other hand, smsc driver provides a function with both
correct reset behaviour and configuration.

This patch moves the reset part into a new smsc_phy_reset function and provides
the soft_reset pointer to have a correct reset behaviour by default.

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@armadeus.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
index 180c494..a4b0819 100644 (file)
--- a/drivers/net/phy/smsc.c
+++ b/drivers/net/phy/smsc.c
@@ -42,6 +42,22 @@ static int smsc_phy_ack_interrupt(struct phy_device *phydev)
 }
 
 static int smsc_phy_config_init(struct phy_device *phydev)
+{
+       int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
+
+       if (rc < 0)
+               return rc;
+
+       /* Enable energy detect mode for this SMSC Transceivers */
+       rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
+                      rc | MII_LAN83C185_EDPWRDOWN);
+       if (rc < 0)
+               return rc;
+
+       return smsc_phy_ack_interrupt(phydev);
+}
+
+static int smsc_phy_reset(struct phy_device *phydev)
 {
        int rc = phy_read(phydev, MII_LAN83C185_SPECIAL_MODES);
        if (rc < 0)
@@ -66,18 +82,7 @@ static int smsc_phy_config_init(struct phy_device *phydev)
                        rc = phy_read(phydev, MII_BMCR);
                } while (rc & BMCR_RESET);
        }
-
-       rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
-       if (rc < 0)
-               return rc;
-
-       /* Enable energy detect mode for this SMSC Transceivers */
-       rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
-                      rc | MII_LAN83C185_EDPWRDOWN);
-       if (rc < 0)
-               return rc;
-
-       return smsc_phy_ack_interrupt (phydev);
+       return 0;
 }
 
 static int lan911x_config_init(struct phy_device *phydev)
@@ -142,6 +147,7 @@ static struct phy_driver smsc_phy_driver[] = {
        .config_aneg    = genphy_config_aneg,
        .read_status    = genphy_read_status,
        .config_init    = smsc_phy_config_init,
+       .soft_reset     = smsc_phy_reset,
 
        /* IRQ related */
        .ack_interrupt  = smsc_phy_ack_interrupt,
@@ -164,6 +170,7 @@ static struct phy_driver smsc_phy_driver[] = {
        .config_aneg    = genphy_config_aneg,
        .read_status    = genphy_read_status,
        .config_init    = smsc_phy_config_init,
+       .soft_reset     = smsc_phy_reset,
 
        /* IRQ related */
        .ack_interrupt  = smsc_phy_ack_interrupt,
@@ -186,6 +193,7 @@ static struct phy_driver smsc_phy_driver[] = {
        .config_aneg    = genphy_config_aneg,
        .read_status    = genphy_read_status,
        .config_init    = smsc_phy_config_init,
+       .soft_reset     = smsc_phy_reset,
 
        /* IRQ related */
        .ack_interrupt  = smsc_phy_ack_interrupt,
@@ -230,6 +238,7 @@ static struct phy_driver smsc_phy_driver[] = {
        .config_aneg    = genphy_config_aneg,
        .read_status    = lan87xx_read_status,
        .config_init    = smsc_phy_config_init,
+       .soft_reset     = smsc_phy_reset,
 
        /* IRQ related */
        .ack_interrupt  = smsc_phy_ack_interrupt,