Subject:ACPI: Send the reserved AC notification event to user space
>From : Zhao Yakui <yakui.zhao@xxxxxxxxx>
On some laptops the bogus bios sends the reserved AC notification event(0x81)
when the AC adapter is plugged/unplugged .It can't be sent to
user space, which causes that user space application can't
receive the AC adapter event.
So the reserved AC adapter event(0x81) is still sent to the user space
so that user space can receive the notification event.
Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx>
---
drivers/acpi/ac.c | 4 ++++
1 file changed, 4 insertions(+)
Index: linux-2.6/drivers/acpi/ac.c
===================================================================
--- linux-2.6.orig/drivers/acpi/ac.c
+++ linux-2.6/drivers/acpi/ac.c
@@ -42,6 +42,7 @@
#define ACPI_AC_DEVICE_NAME "AC Adapter"
#define ACPI_AC_FILE_STATE "state"
#define ACPI_AC_NOTIFY_STATUS 0x80
+#define ACPI_AC_NOTIFY_RESERVED 0x81
#define ACPI_AC_STATUS_OFFLINE 0x00
#define ACPI_AC_STATUS_ONLINE 0x01
#define ACPI_AC_STATUS_UNKNOWN 0xFF
@@ -233,6 +234,9 @@ static void acpi_ac_notify(acpi_handle h
device = ac->device;
switch (event) {
+ case ACPI_AC_NOTIFY_RESERVED:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Unsupported event [0x%x]\n", event));
case ACPI_AC_NOTIFY_STATUS:
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
--
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