From fcd0a04267ac7c5d5f9a27d2af824270f2091760 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 31 Jul 2019 11:05:33 +0200 Subject: [PATCH] ACPI: PM: s2idle: Switch EC over to polling during "noirq" suspend Since the ACPI SCI is set up for system wakeup before the "noirq" suspend of devices, it is better to make suspend-to-idle follow suspend-to-RAM (S3) and switch over the EC to polling during "noirq" suspend (and back to interrupt-based flow during "noirq" resume). The frequency of spurious wakeup interrupts from the EC may be reduced this way. Signed-off-by: Rafael J. Wysocki Tested-by: Kai-Heng Feng --- drivers/acpi/ec.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index b996ca5..5a38409 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1958,8 +1958,7 @@ static int acpi_ec_suspend_noirq(struct device *dev) ec->reference_count >= 1) acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE); - if (acpi_sleep_no_ec_events()) - acpi_ec_enter_noirq(ec); + acpi_ec_enter_noirq(ec); return 0; } @@ -1968,8 +1967,7 @@ static int acpi_ec_resume_noirq(struct device *dev) { struct acpi_ec *ec = acpi_driver_data(to_acpi_device(dev)); - if (acpi_sleep_no_ec_events()) - acpi_ec_leave_noirq(ec); + acpi_ec_leave_noirq(ec); if (ec_no_wakeup && test_bit(EC_FLAGS_STARTED, &ec->flags) && ec->reference_count >= 1) -- 2.7.4