On 2015-10-02 15:30, Neil Armstrong wrote:
> On 10/02/2015 03:29 PM, Sergei Shtylyov wrote:
>> On 10/2/2015 1:48 PM, Neil Armstrong wrote:
>>
>>> To simplify and prevent memory leakage when unbinding, use
>>> the devm_ memory allocation calls.
>>>
>>> Tested-by: Andrew Lunn <and...@lunn.ch>
>>> Tested-by: Florian Fainelli <f.faine...@gmail.com>
>>> Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
>>> ---
>>> net/dsa/dsa.c | 6 +++---
>>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
>>> index c59fa5d..98f94c2 100644
>>> --- a/net/dsa/dsa.c
>>> +++ b/net/dsa/dsa.c
>>> @@ -305,7 +305,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
>>> struct device *parent)
>>> if (ret < 0)
>>> goto out;
>>>
>>> - ds->slave_mii_bus = mdiobus_alloc();
>>> + ds->slave_mii_bus = devm_mdiobus_alloc(parent);
>>> if (ds->slave_mii_bus == NULL) {
>>> ret = -ENOMEM;
>>> goto out;
>>> @@ -400,7 +400,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
>>> /*
>>> * Allocate and initialise switch state.
>>> */
>>> - ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL);
>>> + ds = devm_kzalloc(parent, sizeof(*ds) + drv->priv_size, GFP_KERNEL);
>>> if (ds == NULL)
>>> return ERR_PTR(-ENOMEM);
>>>
>>> @@ -883,7 +883,7 @@ static int dsa_probe(struct platform_device *pdev)
>>> goto out;
>>> }
>>>
>>> - dst = kzalloc(sizeof(*dst), GFP_KERNEL);
>>> + dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
>>> if (dst == NULL) {
>>> dev_put(dev);
>>> ret = -ENOMEM;
>>>
>>
>> Shouldn't you remove the correspoding kfree(), etc. calls?
>>
>> MBR, Sergei
>>
> The corresponding kfree() calls were all missing.
Not in the error handling path. mdiobus_alloc has a corresponding
mdiobus_free in the same function.
The ds kzalloc in dsa_switch_setup has a kfree in dsa_switch_setup_one.
- Felix
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