On 9/25/19 10:36 AM, Danil Kipnis wrote:
> On Mon, Sep 23, 2019 at 11:51 PM Bart Van Assche <bvanassche@xxxxxxx> wrote:
>> On 6/20/19 8:03 AM, Jack Wang wrote:
>>> +static void ibtrs_clt_dev_release(struct device *dev)
>>> +{
>>> + /* Nobody plays with device references, so nop */
>>> +}
>>
>> That comment sounds wrong. Have you reviewed all of the device driver
>> core code and checked that there is no code in there that manipulates
>> struct device refcounts? I think the code that frees struct ibtrs_clt
>> should be moved from free_clt() into the above function.
>
> We only use the device to create an entry under /sys/class. free_clt()
> is destroying sysfs first and unregisters the device afterwards. I
> don't really see the need to free from the callback instead... Will
> make it clear in the comment.
There is plenty of code under drivers/base that calls get_device() and
put_device(). Are you sure that none of the code under drivers/base will
ever call get_device() and put_device() for the ibtrs client device?
Thanks,
Bart.
