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authorRafael J. Wysocki <rjw@sisk.pl>2010-02-18 01:41:07 +0300
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-02-23 03:20:45 +0300
commit9630bdd9b15d2f489c646d8bc04b60e53eb5ec78 (patch)
treeed99f729cb9142492e0cdf2f7d19f2f33069a3f4 /drivers/acpi/system.c
parentc39fae1416d59fd565606793f090cebe3720d50d (diff)
downloadlinux-9630bdd9b15d2f489c646d8bc04b60e53eb5ec78.tar.xz
ACPI: Use GPE reference counting to support shared GPEs
ACPI GPEs may map to multiple devices. The current GPE interface only provides a mechanism for enabling and disabling GPEs, making it difficult to change the state of GPEs at runtime without extensive cooperation between devices. Add an API to allow devices to indicate whether or not they want their device's GPE to be enabled for both runtime and wakeup events. Remove the old GPE type handling entirely, which gets rid of various quirks, like the implicit disabling with GPE type setting. This requires a small amount of rework in order to ensure that non-wake GPEs are enabled by default to preserve existing behaviour. Based on patches from Matthew Garrett <mjg@redhat.com>. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/acpi/system.c')
-rw-r--r--drivers/acpi/system.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index d11282975f35..a206a12da78a 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -387,10 +387,10 @@ static ssize_t counter_set(struct kobject *kobj,
if (index < num_gpes) {
if (!strcmp(buf, "disable\n") &&
(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_disable_gpe(handle, index);
+ result = acpi_set_gpe(handle, index, ACPI_GPE_DISABLE);
else if (!strcmp(buf, "enable\n") &&
!(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_enable_gpe(handle, index);
+ result = acpi_set_gpe(handle, index, ACPI_GPE_ENABLE);
else if (!strcmp(buf, "clear\n") &&
(status & ACPI_EVENT_FLAG_SET))
result = acpi_clear_gpe(handle, index, ACPI_NOT_ISR);