kernel/acpica-01-linux-2.6.git-a997ab332832519c2e292db13f509e4360495a5a.patch
2010-07-29 17:19:53 -07:00

45 lines
1.8 KiB
Diff

From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Fri, 11 Jun 2010 22:05:19 +0000 (+0200)
Subject: ACPI / ACPICA: Do not attempt to disable GPE when installing handler
X-Git-Tag: v2.6.35-rc4~72^2~6^2~5
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=a997ab332832519c2e292db13f509e4360495a5a
ACPI / ACPICA: Do not attempt to disable GPE when installing handler
Commit 0f849d2cc6863c7874889ea60a871fb71399dd3f (ACPICA: Minimize
the differences between linux GPE code and ACPICA code base)
introduced a change attempting to disable a GPE before installing
a handler for it in acpi_install_gpe_handler() which was incorrect.
First, the GPE disabled by it is never enabled again (except during
resume) which leads to battery insert/remove events not being
reported on the Maxim Levitsky's machine. Second, the disabled
GPE is still reported as enabled by the sysfs interface that only
checks its enable register's enable_for_run mask.
Revert this change for now, because it causes more damage to happen
than the bug it was supposed to fix.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index cc82502..4a531cd 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -719,13 +719,6 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
handler->context = context;
handler->method_node = gpe_event_info->dispatch.method_node;
- /* Disable the GPE before installing the handler */
-
- status = acpi_ev_disable_gpe(gpe_event_info);
- if (ACPI_FAILURE (status)) {
- goto unlock_and_exit;
- }
-
/* Install the handler */
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);