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 <[email protected]>
> Tested-by: Gjorgji Jankovski <[email protected]>
> Tested-by: Damjan Georgievski <[email protected]>
> Tested-by: Fernando Chaves <[email protected]>
> Tested-by: Tomislav Ivek <[email protected]>
> Tested-by: Denis P. <[email protected]>
> Signed-off-by: Lv Zheng <[email protected]>
> Cc: Stable <[email protected]> # all applicable
Both patches applied with some minor modifications in the changelogs.
Thanks,
Rafael
