"Rafael J. Wysocki" <rjw@xxxxxxx> writes: > On Friday 29 May 2009, Jan Scholz wrote: >> Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> writes: >> >> >> We are too late in the cycle to revert this commit and it really is needed to >> >> fix a more serious issue. Nevertheless knowing that it caused the problem to >> >> appear on your system is also important. >> >> >> >> Ben, do you have an idea what may be going on here? Does __disable_irq() mask >> >> the interrupt on this platform? >> > >> > I suppose so :-) I'll have to check what's going on, it's not >> > immediately clear to me. >> > >> > Cheers, >> > Ben. >> > >> >> >> >> I'd like to see a boot log, preferably containing a suspend-resume in which >> >> the problem was reproduced. >> >> Here is a log from booting, through several suspend cycles, until the >> trackpad disappeared. The first few suspends were done while X was >> running but from the console. As you can tell from lines like >> May 28 23:51:26 [kernel] adb devices: [2]: 2 c4 [3]: 3 1 [7]: 7 1f >> the trackpad was still present. The last suspend was done from within X, >> here the trackpad did not make it. >> May 28 23:58:09 [kernel] adb devices: [2]: 2 c4 [7]: 7 1f >> However, there have been cases, although not in this log, were the >> trackpad has been alive even when suspending from within X. > > This means the problem is probably timing-related. > > Can you please try to comment out suspend_device_irqs() and > resume_device_irqs() in drivers/base/power/main.c and see if that changes > anything? It's not entirely safe (well, that's why the calls are there after > all), but hopefully the box won't hang during this test. > Tried that against v2.6.30-rc7 and it seems to fix the issue. I did ~10 suspend-resume cycles from the console (which worked just like before) and ~20 cycles from within X and the trackpad is still alive. Best, Jan Scholz _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
