[PATCH 2/4] phy: core: fix wrong err handle for phy_power_on

[Kishon Vijay Abraham I]

From: Shawn Lin <shawn....@rock-chips.com>

If phy_pm_runtime_get_sync failed but we already
enable regulator, current code return directly without
doing regulator_disable. This patch fix this problem
and cleanup err handle of phy_power_on to be more readable.

Fixes: 3be88125d85d ("phy: core: Support regulator ...")
Cc: <sta...@vger.kernel.org> # v3.18+
Cc: Roger Quadros <rog...@ti.com>
Cc: Axel Lin <axel....@ingics.com>
Signed-off-by: Shawn Lin <shawn....@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kis...@ti.com>
---
 drivers/phy/phy-core.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 8c7f27d..e7e574d 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -275,20 +275,21 @@ EXPORT_SYMBOL_GPL(phy_exit);
 
 int phy_power_on(struct phy *phy)
 {
-       int ret;
+       int ret = 0;
 
        if (!phy)
-               return 0;
+               goto out;
 
        if (phy->pwr) {
                ret = regulator_enable(phy->pwr);
                if (ret)
-                       return ret;
+                       goto out;
        }
 
        ret = phy_pm_runtime_get_sync(phy);
        if (ret < 0 && ret != -ENOTSUPP)
-               return ret;
+               goto err_pm_sync;
+
        ret = 0; /* Override possible ret == -ENOTSUPP */
 
        mutex_lock(&phy->mutex);
@@ -296,19 +297,20 @@ int phy_power_on(struct phy *phy)
                ret = phy->ops->power_on(phy);
                if (ret < 0) {
                        dev_err(&phy->dev, "phy poweron failed --> %d\n", ret);
-                       goto out;
+                       goto err_pwr_on;
                }
        }
        ++phy->power_count;
        mutex_unlock(&phy->mutex);
        return 0;
 
-out:
+err_pwr_on:
        mutex_unlock(&phy->mutex);
        phy_pm_runtime_put_sync(phy);
+err_pm_sync:
        if (phy->pwr)
                regulator_disable(phy->pwr);
-
+out:
        return ret;
 }
 EXPORT_SYMBOL_GPL(phy_power_on);
-- 
1.7.9.5