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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2010-06-08 12:50:53 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-06-12 08:45:28 +0400 |
| commit | 9d3c752de65dbfa6e522f1d666deb0ac152ef367 (patch) | |
| tree | 811f3ac51c9fd02c2bf39236cef068e1e44dba72 /drivers/acpi | |
| parent | ce43ace02320a3fb9614ddb27edc3a8700d68b26 (diff) | |
| download | linux-9d3c752de65dbfa6e522f1d666deb0ac152ef367.tar.xz | |
ACPI / ACPICA: Fix sysfs GPE interface
The sysfs interface allowing user space to disable/enable GPEs
doesn't work correctly, because a GPE disabled this way will be
re-enabled shortly by acpi_ev_asynch_enable_gpe() if it was
previosuly enabled by acpi_enable_gpe() (in which case the
corresponding bit in its enable register's enable_for_run mask is
set).
To address this issue make the sysfs GPE interface use
acpi_enable_gpe() and acpi_disable_gpe() instead of acpi_set_gpe()
so that GPE reference counters are modified by it along with the
values of GPE enable registers.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/system.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c index e35525b39f6b..904e8fce2e74 100644 --- a/drivers/acpi/system.c +++ b/drivers/acpi/system.c @@ -388,10 +388,12 @@ static ssize_t counter_set(struct kobject *kobj, if (index < num_gpes) { if (!strcmp(buf, "disable\n") && (status & ACPI_EVENT_FLAG_ENABLED)) - result = acpi_set_gpe(handle, index, ACPI_GPE_DISABLE); + result = acpi_disable_gpe(handle, index, + ACPI_GPE_TYPE_RUNTIME); else if (!strcmp(buf, "enable\n") && !(status & ACPI_EVENT_FLAG_ENABLED)) - result = acpi_set_gpe(handle, index, ACPI_GPE_ENABLE); + result = acpi_enable_gpe(handle, index, + ACPI_GPE_TYPE_RUNTIME); else if (!strcmp(buf, "clear\n") && (status & ACPI_EVENT_FLAG_SET)) result = acpi_clear_gpe(handle, index); |