[3.19.y-ckt stable] Patch "phy: core: fix wrong err handle for phy_power_on" has been added to the 3.19.y-ckt tree
Kamal Mostafa
kamal at canonical.com
Wed Mar 9 00:24:15 UTC 2016
This is a note to let you know that I have just added a patch titled
phy: core: fix wrong err handle for phy_power_on
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt16.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.19.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
---8<------------------------------------------------------------
>From e917c26abe5b9d4a9abe986528f9213d17b530c5 Mon Sep 17 00:00:00 2001
From: Shawn Lin <shawn.lin at rock-chips.com>
Date: Thu, 28 Jan 2016 16:14:18 +0800
Subject: phy: core: fix wrong err handle for phy_power_on
commit b82fcabe212a11698fd4b3e604d2f81d929d22f6 upstream.
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: Roger Quadros <rogerq at ti.com>
Cc: Axel Lin <axel.lin at ingics.com>
Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.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 3791838..87a50c3 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);
--
2.7.0
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