diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-17 12:21:55 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-18 10:51:16 +0100 |
| commit | f941d3e41da7f86bdb9dcc1977c2bcc6b89bfe47 (patch) | |
| tree | aecf36606bfff4ad9e6d3c7efdbf26059237ab34 /drivers/acpi/sleep.c | |
| parent | 7566ec393f4161572ba6f11ad5171fd5d59b0fbd (diff) | |
ACPI: EC / PM: Disable non-wakeup GPEs for suspend-to-idle
There are systems in which non-wakeup GPEs fire during the "noirq"
suspend stage of suspending devices and that effectively prevents the
system that tries to suspend to idle from entering any low-power
state at all. If the offending GPE fires regularly and often enough,
the system appears to be suspended, but in fact it is in a tight loop
over "noirq" suspend and "noirq" resume of devices all the time.
To prevent that from happening, disable all non-wakeup GPEs except
for the EC GPE for suspend-to-idle (the EC GPE is special, because
on some systems it has to be enabled for power button wakeup events
to be generated as expected).
Fixes: 147a7d9d25ca (ACPI / PM: Do not reconfigure GPEs for suspend-to-idle)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201987
Reported-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/sleep.c')
| -rw-r--r-- | drivers/acpi/sleep.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 754d59f95500..74c489047f57 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -940,6 +940,8 @@ static int lps0_device_attach(struct acpi_device *adev, acpi_handle_debug(adev->handle, "_DSM function mask: 0x%x\n", bitmask); + + acpi_ec_mark_gpe_for_wake(); } else { acpi_handle_debug(adev->handle, "_DSM function 0 evaluation failed\n"); @@ -968,11 +970,16 @@ static int acpi_s2idle_prepare(void) if (lps0_device_handle) { acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF); acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY); + + acpi_ec_set_gpe_wake_mask(ACPI_GPE_ENABLE); } if (acpi_sci_irq_valid()) enable_irq_wake(acpi_sci_irq); + /* Change the configuration of GPEs to avoid spurious wakeup. */ + acpi_enable_all_wakeup_gpes(); + acpi_os_wait_events_complete(); return 0; } @@ -1017,10 +1024,14 @@ static void acpi_s2idle_sync(void) static void acpi_s2idle_restore(void) { + acpi_enable_all_runtime_gpes(); + if (acpi_sci_irq_valid()) disable_irq_wake(acpi_sci_irq); if (lps0_device_handle) { + acpi_ec_set_gpe_wake_mask(ACPI_GPE_DISABLE); + acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT); acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON); } |