This is a note to let you know that I've just added the patch titled
ACPICA: Dispatch active GPEs at init time
to the 4.13-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: acpica-dispatch-active-gpes-at-init-time.patch and it can be found in the queue-4.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From ecc1165b8b743fd1503b9c799ae3a9933b89877b Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" rafael.j.wysocki@intel.com Date: Thu, 10 Aug 2017 00:30:09 +0200 Subject: ACPICA: Dispatch active GPEs at init time
From: Rafael J. Wysocki rafael.j.wysocki@intel.com
commit ecc1165b8b743fd1503b9c799ae3a9933b89877b upstream.
In some cases GPEs are already active when they are enabled by acpi_ev_initialize_gpe_block() and whatever happens next may depend on the result of handling the events signaled by them, so the events should not be discarded (which is what happens currently) and they should be handled as soon as reasonably possible.
For this reason, modify acpi_ev_initialize_gpe_block() to dispatch GPEs with the status flag set in-band right after enabling them.
Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Tested-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/acpi/acpica/evgpeblk.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-)
--- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -440,9 +440,11 @@ acpi_ev_initialize_gpe_block(struct acpi void *ignored) { acpi_status status; + acpi_event_status event_status; struct acpi_gpe_event_info *gpe_event_info; u32 gpe_enabled_count; u32 gpe_index; + u32 gpe_number; u32 i; u32 j;
@@ -470,30 +472,38 @@ acpi_ev_initialize_gpe_block(struct acpi
gpe_index = (i * ACPI_GPE_REGISTER_WIDTH) + j; gpe_event_info = &gpe_block->event_info[gpe_index]; + gpe_number = gpe_block->block_base_number + gpe_index;
/* * Ignore GPEs that have no corresponding _Lxx/_Exx method - * and GPEs that are used to wake the system + * and GPEs that are used for wakeup */ - if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == - ACPI_GPE_DISPATCH_NONE) - || (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == - ACPI_GPE_DISPATCH_HANDLER) - || (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) == - ACPI_GPE_DISPATCH_RAW_HANDLER) + if ((ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != + ACPI_GPE_DISPATCH_METHOD) || (gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) { continue; }
+ event_status = 0; + (void)acpi_hw_get_gpe_status(gpe_event_info, + &event_status); + status = acpi_ev_add_gpe_reference(gpe_event_info); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Could not enable GPE 0x%02X", - gpe_index + - gpe_block->block_base_number)); + gpe_number)); continue; }
+ if (event_status & ACPI_EVENT_FLAG_STATUS_SET) { + ACPI_INFO(("GPE 0x%02X active on init", + gpe_number)); + (void)acpi_ev_gpe_dispatch(gpe_block->node, + gpe_event_info, + gpe_number); + } + gpe_enabled_count++; } }
Patches currently in stable-queue which might be from rafael.j.wysocki@intel.com are
queue-4.13/acpi-pm-blacklist-low-power-s0-idle-_dsm-for-dell-xps13-9360.patch queue-4.13/acpica-make-it-possible-to-enable-runtime-gpes-earlier.patch queue-4.13/acpica-dispatch-active-gpes-at-init-time.patch queue-4.13/acpi-scan-enable-gpes-before-scanning-the-namespace.patch