[PATCH v2] net: phy: micrel: Add specific suspend

[Wenyou Yang]

Disable all interrupts when suspend, they will be enabled
when resume. Otherwise, the suspend/resume process will be
blocked occasionally.

Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com>
Acked-by: Nicolas Ferre <nicolas.fe...@atmel.com>
---

Changes in v2:
 - Use fairly generic phydrv->config_intr() with
   PHY_INTERRUPT_DISABLED, then call genphy_suspend().
 - Modify kszphy_resume() with PHY_INTERRUPT_ENABLED accordingly.
 - Add static attribute for kszphy_suspend().

 drivers/net/phy/micrel.c | 27 +++++++++++++++++++--------
 1 file changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 5a8fefc..b598d46 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -647,17 +647,28 @@ static void kszphy_get_stats(struct phy_device *phydev,
                data[i] = kszphy_get_stat(phydev, i);
 }
 
-static int kszphy_resume(struct phy_device *phydev)
+static int kszphy_suspend(struct phy_device *phydev)
 {
-       int value;
+       /* Disable PHY Interrupts */
+       if (phy_interrupt_is_valid(phydev)) {
+               phydev->interrupts = PHY_INTERRUPT_DISABLED;
+               if (phydev->drv->config_intr)
+                       phydev->drv->config_intr(phydev);
+       }
 
-       mutex_lock(&phydev->lock);
+       return genphy_suspend(phydev);
+}
 
-       value = phy_read(phydev, MII_BMCR);
-       phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN);
+static int kszphy_resume(struct phy_device *phydev)
+{
+       genphy_resume(phydev);
 
-       kszphy_config_intr(phydev);
-       mutex_unlock(&phydev->lock);
+       /* Enable PHY Interrupts */
+       if (phy_interrupt_is_valid(phydev)) {
+               phydev->interrupts = PHY_INTERRUPT_ENABLED;
+               if (phydev->drv->config_intr)
+                       phydev->drv->config_intr(phydev);
+       }
 
        return 0;
 }
@@ -870,7 +881,7 @@ static struct phy_driver ksphy_driver[] = {
        .get_sset_count = kszphy_get_sset_count,
        .get_strings    = kszphy_get_strings,
        .get_stats      = kszphy_get_stats,
-       .suspend        = genphy_suspend,
+       .suspend        = kszphy_suspend,
        .resume         = kszphy_resume,
 }, {
        .phy_id         = PHY_ID_KSZ8061,
-- 
2.7.4