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authorZhang Rui <rui.zhang@intel.com>2008-10-27 14:01:02 -0700
committerLen Brown <len.brown@intel.com>2008-10-28 01:53:19 -0400
commited206fac87d65917280b6c3edd3f01125d4095c9 (patch)
tree5197b6d5fbab8f78e4451320b5a1f4f06f62f404 /drivers/acpi/system.c
parent49fdf6785fd660e18a1eb4588928f47e9fa29a9a (diff)
ACPI: bugfix reporting of event handler status
Introduce a new flag showing whether the event has an event handler/method. For all the GPEs and Fixed Events, 1. ACPI_EVENT_FLAG_HANDLE is cleared, it's an "invalid" ACPI event. 2. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_DISABLE are set, it's "disabled". 3. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_ENABLE are set, it's "enabled". 4. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_WAKE_ENABLE are set, it's "wake_enabled". Among other things, this prevents incorrect reporting of ACPI events as being "invalid" when it's really just (temporarily) "disabled". Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/system.c')
-rw-r--r--drivers/acpi/system.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 1d74171b794..6d348dce081 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -167,7 +167,6 @@ static int acpi_system_sysfs_init(void)
#define COUNT_ERROR 2 /* other */
#define NUM_COUNTERS_EXTRA 3
-#define ACPI_EVENT_VALID 0x01
struct event_counter {
u32 count;
u32 flags;
@@ -312,12 +311,6 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
} else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
result = acpi_get_event_status(index - num_gpes, status);
- /*
- * sleep/power button GPE/Fixed Event is enabled after acpi_system_init,
- * check the status at runtime and mark it as valid once it's enabled
- */
- if (!result && (*status & ACPI_EVENT_FLAG_ENABLED))
- all_counters[index].flags |= ACPI_EVENT_VALID;
end:
return result;
}
@@ -346,12 +339,14 @@ static ssize_t counter_show(struct kobject *kobj,
if (result)
goto end;
- if (!(all_counters[index].flags & ACPI_EVENT_VALID))
- size += sprintf(buf + size, " invalid");
+ if (!(status & ACPI_EVENT_FLAG_HANDLE))
+ size += sprintf(buf + size, " invalid");
else if (status & ACPI_EVENT_FLAG_ENABLED)
- size += sprintf(buf + size, " enable");
+ size += sprintf(buf + size, " enabled");
+ else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
+ size += sprintf(buf + size, " wake_enabled");
else
- size += sprintf(buf + size, " disable");
+ size += sprintf(buf + size, " disabled");
end:
size += sprintf(buf + size, "\n");
@@ -385,7 +380,7 @@ static ssize_t counter_set(struct kobject *kobj,
if (result)
goto end;
- if (!(all_counters[index].flags & ACPI_EVENT_VALID)) {
+ if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
printk(KERN_WARNING PREFIX
"Can not change Invalid GPE/Fixed Event status\n");
return -EINVAL;