Guenter Roeck <li...@roeck-us.net> writes:
> On Tue, Feb 03, 2015 at 10:40:14AM +0800, Junjie Mao wrote:
>> v2: do not call kfree on allocated devs after device_initialize is called
>>
>> Signed-off-by: Junjie Mao <junjie....@hotmail.com>
>> ---
>> drivers/edac/i7core_edac.c | 37 +++++++++++++++++++++++++------------
>> 1 file changed, 25 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
>> index 9cd0b301f81b..f6a7b676d69c 100644
>> --- a/drivers/edac/i7core_edac.c
>> +++ b/drivers/edac/i7core_edac.c
>> @@ -1167,17 +1167,17 @@ static int i7core_create_sysfs_devices(struct
>> mem_ctl_info *mci)
>> return rc;
>> rc = device_create_file(&mci->dev, &dev_attr_inject_type);
>> if (rc < 0)
>> - return rc;
>> + goto fail_remove_inject_section;
>> rc = device_create_file(&mci->dev, &dev_attr_inject_eccmask);
>> if (rc < 0)
>> - return rc;
>> + goto fail_remove_inject_type;
>> rc = device_create_file(&mci->dev, &dev_attr_inject_enable);
>> if (rc < 0)
>> - return rc;
>> + goto fail_remove_inject_eccmask;
>>
>> pvt->addrmatch_dev = kzalloc(sizeof(*pvt->addrmatch_dev), GFP_KERNEL);
>> if (!pvt->addrmatch_dev)
>> - return rc;
>> + goto fail_remove_inject_enable;
>>
>> pvt->addrmatch_dev->type = &addrmatch_type;
>> pvt->addrmatch_dev->bus = mci->dev.bus;
>> @@ -1190,16 +1190,13 @@ static int i7core_create_sysfs_devices(struct
>> mem_ctl_info *mci)
>>
>> rc = device_add(pvt->addrmatch_dev);
>> if (rc < 0)
>> - return rc;
>> + goto fail_free_addrmatch_dev;
>>
>> if (!pvt->is_registered) {
>> pvt->chancounts_dev = kzalloc(sizeof(*pvt->chancounts_dev),
>> GFP_KERNEL);
>> - if (!pvt->chancounts_dev) {
>> - put_device(pvt->addrmatch_dev);
>> - device_del(pvt->addrmatch_dev);
>> - return rc;
>> - }
>> + if (!pvt->chancounts_dev)
>> + goto fail_del_addrmatch_dev;
>>
>> pvt->chancounts_dev->type = &all_channel_counts_type;
>> pvt->chancounts_dev->bus = mci->dev.bus;
>> @@ -1211,10 +1208,26 @@ static int i7core_create_sysfs_devices(struct
>> mem_ctl_info *mci)
>> edac_dbg(1, "creating %s\n", dev_name(pvt->chancounts_dev));
>>
>> rc = device_add(pvt->chancounts_dev);
>> - if (rc < 0)
>> - return rc;
>> + if (rc < 0) {
>> + put_device(pvt->chancounts_dev);
>> + goto fail_del_addrmatch_dev;
>> + }
>> }
>> return 0;
>> +
>> +fail_del_addrmatch_dev:
>> + device_del(pvt->addrmatch_dev);
>> +fail_free_addrmatch_dev:
>> + put_device(pvt->addrmatch_dev);
>> +fail_remove_inject_enable:
>> + device_create_file(&mci->dev, &dev_attr_inject_enable);
>> +fail_remove_inject_eccmask:
>> + device_create_file(&mci->dev, &dev_attr_inject_eccmask);
>> +fail_remove_inject_type:
>> + device_create_file(&mci->dev, &dev_attr_inject_type);
>> +fail_remove_inject_section:
>> + device_create_file(&mci->dev, &dev_attr_inject_section);
>
> I don't know the code, but calling device_create_file() on failures
> is quite unusual. Are you sure this is correct ?
>
> Guenter
I should call device_remove_file here. Terribly sorry for the
carelessness.
Best Regards
Junjie Mao
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