From e38e8a0743b0e996a8a3fbea8908fe75a84f02c7 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Fri, 13 Jun 2008 08:28:55 +0800 Subject: Make GPE disable more robust Implemented another change for the GPE disable. We now perform a read-change-write of the enable register instead of simply writing out the cached enable mask. This will prevent inadvertent enabling of GPEs if a rogue GPE is received during initialization (before GPE handlers are installed.) http://bugzilla.kernel.org/show_bug.cgi?id=6217 Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown Signed-off-by: Andi Kleen --- include/acpi/achware.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/acpi/achware.h') diff --git a/include/acpi/achware.h b/include/acpi/achware.h index d4fb9bbc903c..45e985961f4c 100644 --- a/include/acpi/achware.h +++ b/include/acpi/achware.h @@ -87,6 +87,8 @@ acpi_status acpi_hw_clear_acpi_status(void); /* * hwgpe - GPE support */ +acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info); + acpi_status acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info); -- cgit v1.2.2 From 71b58cbb0c30d1f78636a48c4721529449d6ea37 Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Fri, 20 Jun 2008 09:42:47 +0800 Subject: ACPI: Enhance /sys/firmware/interrupts to allow enable/disable/clear from user-space Allow users to enable/disable/clear a specific & valid GPE/Fixed Event in user space. This is useful for debugging, especially for some interrupt storm issues. All wakeup GPEs are disabled and they can not be enabled at runtime, and we mark them as invalid. All GPEs that don't have a _Lxx/_Exx method are marked as invalid. All Fixed Events that don't have an event handler are marked as invalid and they can't be enabled until an event handler is registered. Signed-off-by: Zhang Rui Signed-off-by: Ling Ming Signed-off-by: Len Brown Signed-off-by: Andi Kleen --- include/acpi/achware.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/acpi/achware.h') diff --git a/include/acpi/achware.h b/include/acpi/achware.h index 45e985961f4c..97a72b193276 100644 --- a/include/acpi/achware.h +++ b/include/acpi/achware.h @@ -102,11 +102,9 @@ acpi_status acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block); -#ifdef ACPI_FUTURE_USAGE acpi_status acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info, acpi_event_status * event_status); -#endif /* ACPI_FUTURE_USAGE */ acpi_status acpi_hw_disable_all_gpes(void); -- cgit v1.2.2