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ACPI: EC: PM: Flush EC work unconditionally after wakeup 

commit 5e92442bb4 upstream.

Commit 607b9df630 ("ACPI: EC: PM: Avoid flushing EC work when EC
GPE is inactive") has been reported to cause some power button wakeup
events to be missed on some systems, so modify acpi_ec_dispatch_gpe()
to call acpi_ec_flush_work() unconditionally to effectively reverse
the changes made by that commit.

Also note that the problem which prompted commit 607b9df630 is not
reproducible any more on the affected machine.

Fixes: 607b9df630 ("ACPI: EC: PM: Avoid flushing EC work when EC GPE is inactive")
Reported-by: Raymond Tan <raymond.tan@intel.com>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Rafael J. Wysocki 2020-10-05 19:13:15 +02:00 committed by Greg Kroah-Hartman
parent e7f52fd6e0
commit 0adf4dbae9
1 changed files with 3 additions and 4 deletions
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7
drivers/acpi/ec.c
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@ -1976,12 +1976,11 @@ bool acpi_ec_dispatch_gpe(void)
* to allow the caller to process events properly after that.
*/
ret = acpi_dispatch_gpe(NULL, first_ec->gpe);
if (ret == ACPI_INTERRUPT_HANDLED) {
if (ret == ACPI_INTERRUPT_HANDLED)
pm_pr_dbg("EC GPE dispatched\n");
/* Flush the event and query workqueues. */
acpi_ec_flush_work();
}
/* Flush the event and query workqueues. */
acpi_ec_flush_work();
return false;
}