Hi Dongliang,
On 02/09/2021 12:23, Dongliang Mu wrote:
> On Fri, Jul 23, 2021 at 6:11 PM Dongliang Mu <mudongliangabcd@xxxxxxxxx> wrote:
>>
>> On Wed, Jul 14, 2021 at 11:23 AM Dongliang Mu <mudongliangabcd@xxxxxxxxx> wrote:
>>>
>>> stk_camera_probe mistakenly execute usb_get_intf and increase the
>>> refcount of interface->dev.
>>>
>>> Fix this by removing the execution of usb_get_intf.
>>
>> Any idea about this patch?
>
> +cc Dan Carpenter, gregkh
>
> There is no reply in this thread in one month. Can someone give some
> feedback on this patch?
I saw that it was marked as Obsoleted in patchwork, but I might have confused
this patch with similar, but not identical, patches for this driver.
I've moved the state back to New.
Comments follow below:
>
>>
>>>
>>> Reported-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
>>> Fixes: 0aa77f6c2954 ("[media] move the remaining USB drivers to drivers/media/usb")
>>> Signed-off-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
>>> ---
>>> drivers/media/usb/stkwebcam/stk-webcam.c | 1 -
>>> 1 file changed, 1 deletion(-)
>>>
>>> diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c
>>> index a45d464427c4..5bd8e85b9452 100644
>>> --- a/drivers/media/usb/stkwebcam/stk-webcam.c
>>> +++ b/drivers/media/usb/stkwebcam/stk-webcam.c
>>> @@ -1311,7 +1311,6 @@ static int stk_camera_probe(struct usb_interface *interface,
>>>
>>> dev->udev = udev;
>>> dev->interface = interface;
>>> - usb_get_intf(interface);
Even though this increments the refcount (which might well be unnecessary),
it is also decremented with usb_put_intf. So is there actually a bug here?
And if this is changed, then I expect that both get_intf and put_intf should be
removed, and not just the get.
Regards,
Hans
>>>
>>> if (hflip != -1)
>>> dev->vsettings.hflip = hflip;
>>> --
>>> 2.25.1
>>>
