From c1b1731d2002b93857810aa5da856b43f46bb470 Mon Sep 17 00:00:00 2001
From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Fri, 6 Dec 2013 17:51:18 +0530
Subject: drivers: phy: Fix memory leak
'phy' was not being freed upon error in one of the cases.
Adjust the 'goto's to fix this.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/phy/phy-core.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
(limited to 'drivers/phy/phy-core.c')
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 03cf8fb8155..712b358a575 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -453,7 +453,7 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
if (id < 0) {
dev_err(dev, "unable to get id\n");
ret = id;
- goto err0;
+ goto err1;
}
device_initialize(&phy->dev);
@@ -468,11 +468,11 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
ret = dev_set_name(&phy->dev, "phy-%s.%d", dev_name(dev), id);
if (ret)
- goto err1;
+ goto err2;
ret = device_add(&phy->dev);
if (ret)
- goto err1;
+ goto err2;
if (pm_runtime_enabled(dev)) {
pm_runtime_enable(&phy->dev);
@@ -481,11 +481,11 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
return phy;
-err1:
+err2:
ida_remove(&phy_ida, phy->id);
put_device(&phy->dev);
+err1:
kfree(phy);
-
err0:
return ERR_PTR(ret);
}
--
cgit v1.2.3-70-g09d2
From 52797d293287f5a98bd686616527b102b077ac39 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 6 Dec 2013 17:51:19 +0530
Subject: drivers: phy: tweaks to phy_create()
If this was called with a NULL "dev" then it lead to a NULL dereference
when we called dev_WARN(). I have changed it to WARN_ON() so that we
get a stack dump and can fix the caller.
The rest of this patch is just cleanup like returning directly instead
of having do-nothing gotos. Using descriptive labels instead of
GW-BASIC style "err0" and "err1". I also flipped the order of
put_device() and ida_remove() so they are a mirror reflection of the
order they were allocated.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/phy/phy-core.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)
(limited to 'drivers/phy/phy-core.c')
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 712b358a575..58e0e973902 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -437,23 +437,18 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
int id;
struct phy *phy;
- if (!dev) {
- dev_WARN(dev, "no device provided for PHY\n");
- ret = -EINVAL;
- goto err0;
- }
+ if (WARN_ON(!dev))
+ return ERR_PTR(-EINVAL);
phy = kzalloc(sizeof(*phy), GFP_KERNEL);
- if (!phy) {
- ret = -ENOMEM;
- goto err0;
- }
+ if (!phy)
+ return ERR_PTR(-ENOMEM);
id = ida_simple_get(&phy_ida, 0, 0, GFP_KERNEL);
if (id < 0) {
dev_err(dev, "unable to get id\n");
ret = id;
- goto err1;
+ goto free_phy;
}
device_initialize(&phy->dev);
@@ -468,11 +463,11 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
ret = dev_set_name(&phy->dev, "phy-%s.%d", dev_name(dev), id);
if (ret)
- goto err2;
+ goto put_dev;
ret = device_add(&phy->dev);
if (ret)
- goto err2;
+ goto put_dev;
if (pm_runtime_enabled(dev)) {
pm_runtime_enable(&phy->dev);
@@ -481,12 +476,11 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
return phy;
-err2:
- ida_remove(&phy_ida, phy->id);
+put_dev:
put_device(&phy->dev);
-err1:
+ ida_remove(&phy_ida, phy->id);
+free_phy:
kfree(phy);
-err0:
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(phy_create);
--
cgit v1.2.3-70-g09d2