Re: [linux-usb-devel] [PATCH] USB: Only enable a utosuspend by default on certain device classes

2007-08-03 Thread David Brownell
On Friday 03 August 2007, Dave Jones wrote:   We have been playing with runtime autosuspend of HID devices, are   currently postponed the full support, as it turns out that many devices   don't support this feature properly (probably due to not being tested in   Windows). Interesting.  

Re: [linux-usb-devel] [PATCH] USB: Only enable a utosuspend by default on certain device classes

2007-08-03 Thread Jiri Kosina
On Fri, 3 Aug 2007, David Brownell wrote: And could you elaborate on many? What proportion of HID devices (by volume, model, etc) seem to have problems? Last time I tried with two random USB keyboards - one from Logitech and one from Chicony, I don't remember the exact PIDs, but could look

Re: [linux-usb-devel] [PATCH] USB: Only enable a utosuspend by default on certain device classes

2007-08-03 Thread Oliver Neukum
Am Freitag 03 August 2007 schrieb Dave Jones: On Fri, Aug 03, 2007 at 09:57:45AM +0200, Oliver Neukum wrote: Kernel developers are a diverser lot than you think ;-) We don't enable autosuspend in drivers we can't test, except where the lack of a kernel driver forces us to use a broad

Re: [linux-usb-devel] [PATCH] USB: Only enable a utosuspend by default on certain device classes

2007-08-03 Thread Alan Stern
On Fri, 3 Aug 2007, Jiri Kosina wrote: What I have been seeing with both these keyboards was: if connected to UHCI controller, root hub not auto-suspended, as soon as they got autosuspended, and keys were pressed on them rapidly, very often some keypressess got lost. I didn't experience