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| author | Tony Luck <tony.luck@intel.com> | 2005-07-13 12:15:43 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-07-13 12:15:43 -0700 |
| commit | 99ad25a313bda566a346b46a6015afa65bc0a02b (patch) | |
| tree | b9443fed1ab74f320c4ee0791864ee96d7c069df /drivers/acpi/bus.c | |
| parent | f62c4a96f74d6c6dd56d1742697e94a5c2085e87 (diff) | |
| parent | 9a556e89081b0c1c2f83cee915363b15a68a6f2d (diff) | |
| download | linux-next-99ad25a313bda566a346b46a6015afa65bc0a02b.tar.gz linux-next-99ad25a313bda566a346b46a6015afa65bc0a02b.zip | |
Auto merge with /home/aegl/GIT/linus
Diffstat (limited to 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 4edff1738579..d77c2307883c 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -212,6 +212,12 @@ acpi_bus_set_power ( ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Device is not power manageable\n")); return_VALUE(-ENODEV); } + /* + * Get device's current power state if it's unknown + * This means device power state isn't initialized or previous setting failed + */ + if (device->power.state == ACPI_STATE_UNKNOWN) + acpi_bus_get_power(device->handle, &device->power.state); if (state == device->power.state) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n", state)); return_VALUE(0); @@ -231,7 +237,7 @@ acpi_bus_set_power ( * On transitions to a high-powered state we first apply power (via * power resources) then evalute _PSx. Conversly for transitions to * a lower-powered state. - */ + */ if (state < device->power.state) { if (device->power.flags.power_resources) { result = acpi_power_transition(device, state); |