ACPI / EC: Use busy polling mode when GPE is not enabled

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When GPE is not enabled, it is not efficient to use the wait polling mode
as it introduces an unexpected scheduler delay.
So before the GPE handler is installed, this patch uses busy polling mode
for all EC(s) and the logic can be applied to non boot EC(s) during the
suspend/resume process.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=191561
Tested-by: Jakobus Schurz <jakobus.schurz@gmail.com>
Tested-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Lv Zheng 2017-01-20 16:42:48 +08:00 • committed by Rafael J. Wysocki

parent 4c237371f2

commit c3a696b6e8

2 changed files with 32 additions and 34 deletions

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62

drivers/acpi/ec.c

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4

drivers/acpi/internal.h

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