Re: [PATCH 3/6] HID: asus: Add hid_is_using_ll_driver(usb_hid_driver) check

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On Wed, 6 May 2020, Hans de Goede wrote:

> >> diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
> >> index b3292ff3f61a..719eff589f92 100644
> >> --- a/drivers/hid/hid-asus.c
> >> +++ b/drivers/hid/hid-asus.c
> >> @@ -842,7 +842,8 @@ static int asus_probe(struct hid_device *hdev, const
> >> struct hid_device_id *id)
> >>    if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
> >>     drvdata->tp = &asus_i2c_tp;
> >>   -	if (drvdata->quirks & QUIRK_T100_KEYBOARD) {
> >> +	if ((drvdata->quirks & QUIRK_T100_KEYBOARD) &&
> >> +	    hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
> >>     struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
> >>   
> > 
> > I am going to push the whole patchset to for-5.8/asus branch later today,
> 
> Thanks.

Now pushed out, thanks.

> > but I guess this one should better be taken as 5.7 fix still, right?
> 
> I know that Benjamin has been insisting on these extra checks, which
> is why I added it. But in practice not having the check does not really
> seem to be a big issue, so whether to add it to 5.7.x or not is your call.

So I guess some wild device fuzzer might in theory be able to confuse it, 
but I don't immediately see how. So let's queue this all for 5.8.

-- 
Jiri Kosina
SUSE Labs




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