On Fri, 27 Mar 2015, Oliver Neukum wrote:

quoted

usbhid/hid-core.c already sets HID_QUIRK_NOGET for regular mice/keyboards [1].
Maybe adding ALLWAYS_POLL to those would make sense and solve your problem?

It would solve my problem, but it would do so at the expense of hurting 
devices that operate correctly, but only by a small amount.

quoted

BTW I am against having this quirk as the general default because we
rely on the usb autosuspend to shut off the touchscreens when no one
listen to them, and the touchscreens are draining a lot of power.

I see. As long as they support remote wakeup, autosuspend will
still work. A source of remote wakeup, however, is allowed to
draw more power while suspended.

Keeping things as is is fine by me but then I will need to add a lot of 
quirky devices.

I am still surprised that all of a sudden there is such a large flow of 
new devices that need it, and we didn't have a single one a few months 
ago.

Given the fact that this all is being reported by single entitty, is it a 
possibility that they have some other faulty HW instead? Such as the HUB 
suspending at random incorrect points in time?

-- 
Jiri Kosina
SUSE Labs