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| author | Erik Schmauss <erik.schmauss@intel.com> | 2018-03-15 02:12:57 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-03-18 20:51:59 +0300 |
| commit | 18996f2db9186cbabe3a7e7085bfb80408b32755 (patch) | |
| tree | b867ed6632c419d4945709d6a373d7720314dd2a /drivers/acpi/acpica/evgpe.c | |
| parent | 97f3c0a4b0579b646b6b10ae5a3d59f0441cc12c (diff) | |
| download | linux-18996f2db9186cbabe3a7e7085bfb80408b32755.tar.xz | |
ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume
Unconditionally clearing ACPI IRQs during suspend/resume can lead to
unexpected IRQ losts. This patch fixes this issue by removing such IRQ
clearing code.
If this patch triggers regression, the regression should be in the GPE
handlers that cannot correctly determine some spurious triggered events as
no-ops. Please report any regression related to this commit to the ACPI
component on kernel bugzilla. Lv Zheng.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196249
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reported-and-tested-by: Eric Bakula-Davis <ericbakuladavis@gmail.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/evgpe.c')
| -rw-r--r-- | drivers/acpi/acpica/evgpe.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index 410a3907c051..6d5f6e4fe3ac 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -105,7 +105,7 @@ acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info) * * RETURN: Status * - * DESCRIPTION: Clear a GPE of stale events and enable it. + * DESCRIPTION: Enable a GPE. * ******************************************************************************/ @@ -115,13 +115,6 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) ACPI_FUNCTION_TRACE(ev_enable_gpe); - /* Clear the GPE (of stale events) */ - - status = acpi_hw_clear_gpe(gpe_event_info); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - /* Enable the requested GPE */ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE); |