From: Dan Carpenter <dan.carpen...@oracle.com>
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.carpen...@oracle.com>
Signed-off-by: Kishon Vijay Abraham I <kis...@ti.com>
---
drivers/phy/phy-core.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 712b358..58e0e97 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);
--
1.7.10.4
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