From: Rafael J. Wysocki <rjw@xxxxxxx>
Before evaluating _PRW for devices that are reported as inactive or
not present by their _STA control methods we should check if those
methods are actually present (otherwise the evaulation of _PRW will
obviously fail and a scary message will be printed unnecessarily).
Reported-by: Andreas Mohr <andi@xxxxxxxx>
Reported-by: Maciej Rutecki <maciej.rutecki@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
---
drivers/acpi/scan.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
Index: linux-2.6/drivers/acpi/scan.c
===================================================================
--- linux-2.6.orig/drivers/acpi/scan.c
+++ linux-2.6/drivers/acpi/scan.c
@@ -1388,7 +1388,6 @@ static acpi_status acpi_bus_check_add(ac
struct acpi_bus_ops *ops = context;
int type;
unsigned long long sta;
- struct acpi_device_wakeup wakeup;
struct acpi_device *device;
acpi_status status;
int result;
@@ -1399,7 +1398,13 @@ static acpi_status acpi_bus_check_add(ac
if (!(sta & ACPI_STA_DEVICE_PRESENT) &&
!(sta & ACPI_STA_DEVICE_FUNCTIONING)) {
- acpi_bus_extract_wakeup_device_power_package(handle, &wakeup);
+ struct acpi_device_wakeup wakeup;
+ acpi_handle temp;
+
+ status = acpi_get_handle(handle, "_PRW", &temp);
+ if (ACPI_SUCCESS(status))
+ acpi_bus_extract_wakeup_device_power_package(handle,
+ &wakeup);
return AE_CTRL_DEPTH;
}
--
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