On Saturday, December 27, 2014 09:19:49 AM Pali Rohár wrote:
Hello,
in attachment is output of ls -l /sys/bus/acpi/devices from both 3.13 and 3.19 kernels.
Anyway Gabriele Mazzotta wrote me that new acpi devices could be created after commit faae404ebdc6bba (ACPICA: Add "Windows 2013" string to _OSI support).
Maybe this another output could help you:
$ cat /sys/bus/acpi/devices/INT33C5:00/status 0 $ cat /sys/bus/acpi/devices/INT33C5:00/power_state (unknown)
Device INT33C5 is in that dmesg log: acpi INT33C5:00: Cannot transition to non-D0 state from D3
The appended patch should make these messages go away, please test.
And status 0 in sysnode could indicate that acpi device is not present right?
That's correct.
--- drivers/acpi/device_pm.c | 7 ++++--- include/acpi/acpi_bus.h | 3 ++- 2 files changed, 6 insertions(+), 4 deletions(-)
Index: linux-pm/include/acpi/acpi_bus.h =================================================================== --- linux-pm.orig/include/acpi/acpi_bus.h +++ linux-pm/include/acpi/acpi_bus.h @@ -589,7 +589,8 @@ static inline u32 acpi_target_system_sta
static inline bool acpi_device_power_manageable(struct acpi_device *adev) { - return adev->flags.power_manageable; + return adev->flags.power_manageable + && (adev->status.present || adev->status.functional); }
static inline bool acpi_device_can_wakeup(struct acpi_device *adev) Index: linux-pm/drivers/acpi/device_pm.c =================================================================== --- linux-pm.orig/drivers/acpi/device_pm.c +++ linux-pm/drivers/acpi/device_pm.c @@ -68,7 +68,8 @@ int acpi_device_get_power(struct acpi_de { int result = ACPI_STATE_UNKNOWN;
- if (!device || !state) + if (!device || !state + || !(device->status.present || device->status.functional)) return -EINVAL;
if (!device->flags.power_manageable) { @@ -156,7 +157,7 @@ int acpi_device_set_power(struct acpi_de int result = 0; bool cut_power = false;
- if (!device || !device->flags.power_manageable + if (!device || !acpi_device_power_manageable(device) || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD)) return -EINVAL;
@@ -361,7 +362,7 @@ bool acpi_bus_power_manageable(acpi_hand int result;
result = acpi_bus_get_device(handle, &device); - return result ? false : device->flags.power_manageable; + return result ? false : acpi_device_power_manageable(device); } EXPORT_SYMBOL(acpi_bus_power_manageable);