diff options
| author | Mattia Dongili <malattia@linux.it> | 2007-07-16 02:34:36 +0900 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-07-22 00:34:58 -0400 |
| commit | b25b732a16e4e035247fa729f931ed173f9fc8e2 (patch) | |
| tree | 425e7367c9193a1d152085f9986b66ffdb6b2eda /drivers/misc/sony-laptop.c | |
| parent | 6315fd1c9cd6870a253699f07c5ada85cfe8fecb (diff) | |
| download | kernel_samsung_espresso10-b25b732a16e4e035247fa729f931ed173f9fc8e2.zip kernel_samsung_espresso10-b25b732a16e4e035247fa729f931ed173f9fc8e2.tar.gz kernel_samsung_espresso10-b25b732a16e4e035247fa729f931ed173f9fc8e2.tar.bz2 | |
sony-laptop: Invoke _INI for SNC devices that provide it
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc/sony-laptop.c')
| -rw-r--r-- | drivers/misc/sony-laptop.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c index 43315be..5300cad 100644 --- a/drivers/misc/sony-laptop.c +++ b/drivers/misc/sony-laptop.c @@ -864,6 +864,15 @@ static int sony_nc_add(struct acpi_device *device) sony_nc_acpi_handle = device->handle; + /* read device status */ + result = acpi_bus_get_status(device); + /* bail IFF the above call was successful and the device is not present */ + if (!result && !device->status.present) { + dprintk("Device not present\n"); + result = -ENODEV; + goto outwalk; + } + if (debug) { status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_nc_acpi_handle, 1, sony_walk_callback, NULL, NULL); @@ -874,6 +883,15 @@ static int sony_nc_add(struct acpi_device *device) } } + /* try to _INI the device if such method exists (ACPI spec 3.0-6.5.1 + * should be respected as we already checked for the device presence above */ + if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, METHOD_NAME__INI, &handle))) { + dprintk("Invoking _INI\n"); + if (ACPI_FAILURE(acpi_evaluate_object(sony_nc_acpi_handle, METHOD_NAME__INI, + NULL, NULL))) + dprintk("_INI Method failed\n"); + } + /* setup input devices and helper fifo */ result = sony_laptop_setup_input(); if (result) { @@ -886,7 +904,7 @@ static int sony_nc_add(struct acpi_device *device) ACPI_DEVICE_NOTIFY, sony_acpi_notify, NULL); if (ACPI_FAILURE(status)) { - printk(KERN_WARNING DRV_PFX "unable to install notify handler\n"); + printk(KERN_WARNING DRV_PFX "unable to install notify handler (%u)\n", status); result = -ENODEV; goto outinput; } |