On Fri, Aug 03, 2007 at 12:56:13AM +0100, Matthew Garrett wrote: > We're seeing a large number of problems with devices not appreciating > USB autosuspend, especially printers and scanners. According to > http://www.microsoft.com/whdc/system/bus/USB/USBFAQ_intro.mspx only a > subset of drivers support it in Windows XP, meaning that most devices > are probably untested in this situation. This patch alters the behaviour > to match that of Windows. Userspace can still whitelist devices as > appropriate, and the set of classes supporting autosuspend probably > covers pretty much every driver likely to be found on any portable > device. > > Signed-off-by: Matthew Garrett <[EMAIL PROTECTED]>
Well, if you do this, then you can pretty much delete the whole quirk table we have, right? And personally, I want to do better than Windows XP when it comes to power management. This patch is only going to suspend a very tiny subset of devices, including a whole bunch of ones that do not even have drivers in Linux, causing our power footprint to be bigger than needed. Also, we have udev rules for SANE that disables their autosuspend settings, which handles the majority of the devices we have seen with problems. So I really don't want to accept this patch. But, what problems are you seeing with our current suspend logic that you feel we need to be this harsh? thanks, greg k-h ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
