Re: [PATCH] HID: logitech-hidpp: Handle timeout differently from busy

[Mark Lord <mlord@pobox.com>]

On 2023-06-05 10:20 AM, Benjamin Tissoires wrote:
> 
> On Jun 03 2023, Mark Lord wrote:
..
>> I wonder if this code could be re-worked to not even do this (waiting)
>> from the _probe() function?  It ought to be able to throw it on a workqueue
>> or something, rather than stalling system boot for a minimum of 5-seconds
>> (or much longer as as-is).
> 
> That's an option, but the fact that I can not replicate locally with the
> exact same hardware seems to indicate that we would just be papering
> over the issue.
> 
> Here, I admittely have the USB receiver running through USB-C ports, and
> the communication never fails and I get immediate bring ups of the
> devices. Which means I am not hitting that path.
> 
> The hidpp driver should have everything ready to delay the init in a
> workqueue, but the impacted users would still get a delay when they plug
> in the device (which is better than stalling the boot, I agree).
..

Oddly, it's only a boot-time thing.
If I unplug the Logitech Unifying receiver, wait a few seconds,
and then plug it back in.. my mouse, keyboard, and touchpad all work immediately.
Unlike during boot.
-- 
Mark Lord