Re: [PATCH v3 7/8] HID: logitech: Enable high-resolution scrolling on Logitech mice

[ClÃment VUCHENER]

Le sam. 15 dÃc. 2018 Ã 15:45, ClÃment VUCHENER
<clement.vuchener@xxxxxxxxx> a Ãcrit :
>
> Le ven. 14 dÃc. 2018 Ã 19:37, Harry Cutts <hcutts@xxxxxxxxxxxx> a Ãcrit :
> >
> > Hi Clement,
> >
> > On Fri, 14 Dec 2018 at 05:47, ClÃment VUCHENER
> > <clement.vuchener@xxxxxxxxx> wrote:
> > > Hi, The G500s (and the G500 too, I think) does support the "scrolling
> > > acceleration" bit. If I set it, I get around 8 events for each wheel
> > > "click", this is what this driver expects, right? If I understood
> > > correctly, I should try this patch with the
> > > HIDPP_QUIRK_HI_RES_SCROLL_1P0 quirk set for my mouse.
> >
> > Thanks for the info! Yes, that should work.
>
> Well, it is not that simple. I get "Device not connected" errors for
> both interfaces of the mouse.

I suspect the device is not responding because the hid device is not
started. When is hid_hw_start supposed to be called? It is called
early for HID_QUIRK_CLASS_G920 but later for other device. So the
device is not started when hidpp_is_connected is called. Is this
because most of the device in this driver are not real HID devices but
DJ devices? How should non-DJ devices be treated?