ACPICA: Events: Add runtime stub support for event APIs (861ba635) · Commits · 戴 / test

ACPICA commit 99bc3beca92c6574ea1d69de42e54f872e6373ce It is reported that on Linux, RTC driver complains wrong errors on hardware reduced platform: [ 4.085420] ACPI Warning: Could not enable fixed event - real_time_clock (4) (20160422/evxface-654) This patch fixes this by correctly adding runtime reduced hardware check. Reported by Chandan Tagore, fixed by Lv Zheng. Link: https://github.com/acpica/acpica/commit/99bc3bec Tested-by:

Chandan Tagore <tagore.chandan@gmail.com> Signed-off-by:

Lv Zheng <lv.zheng@intel.com> Signed-off-by:

Bob Moore <robert.moore@intel.com> Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/evxfevnt.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -180,6 +180,12 @@ acpi_status acpi_enable_event(u32 event, u32 flags)

		ACPI_FUNCTION_TRACE(acpi_enable_event);

		/* If Hardware Reduced flag is set, there are no fixed events */

		if (acpi_gbl_reduced_hardware) {
		return_ACPI_STATUS(AE_OK);
		}

		/* Decode the Fixed Event */

		if (event > ACPI_EVENT_MAX) {
		@@ -237,6 +243,12 @@ acpi_status acpi_disable_event(u32 event, u32 flags)

		ACPI_FUNCTION_TRACE(acpi_disable_event);

		/* If Hardware Reduced flag is set, there are no fixed events */

		if (acpi_gbl_reduced_hardware) {
		return_ACPI_STATUS(AE_OK);
		}

		/* Decode the Fixed Event */

		if (event > ACPI_EVENT_MAX) {
		@@ -290,6 +302,12 @@ acpi_status acpi_clear_event(u32 event)

		ACPI_FUNCTION_TRACE(acpi_clear_event);

		/* If Hardware Reduced flag is set, there are no fixed events */

		if (acpi_gbl_reduced_hardware) {
		return_ACPI_STATUS(AE_OK);
		}

		/* Decode the Fixed Event */

		if (event > ACPI_EVENT_MAX) {

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