On Wednesday, July 12, 2017 11:09:09 AM Lv Zheng wrote: > According to the bug report, though the busy polling mode can make noirq > stages executed faster, it causes abnormal fan blowing up after a system > resume (see link #1 for a video demonstration) on Lenovo ThinkPad X1 Carbon > - the 5th Generation. The problem can be fixed by an upgraded EC firmware. > > However many reporters can also confirm that the problem can be fixed by > stopping busy polling during suspend/resume. > > This patch drops noirq stage hooks so that the regression can be fixed > without upgrading the EC firmware. > > Fixes: c3a696b6e8f8 ("ACPI / EC: Use busy polling mode when GPE is not enabled") > Link: https://youtu.be/9NQ9x-Jm99Q [#1] > Link: https://bugzilla.kernel.org/show_bug.cgi?id=196129 > Reported-by: Andreas Lindhe <andreas@xxxxxxxxx> > Tested-by: Gjorgji Jankovski <j.gjorgji@xxxxxxxxx> > Tested-by: Damjan Georgievski <gdamjan@xxxxxxxxx> > Tested-by: Fernando Chaves <nanochaves@xxxxxxxxx> > Tested-by: Tomislav Ivek <tomislav.ivek@xxxxxxxxx> > Tested-by: Denis P. <theoriginal.skullburner@xxxxxxxxx> > Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> > Cc: Stable <stable@xxxxxxxxxxxxxxx> # all applicable Both patches applied with some minor modifications in the changelogs. Thanks, Rafael