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path: root/drivers/misc/sony-laptop.c
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Diffstat (limited to 'drivers/misc/sony-laptop.c')
-rw-r--r--drivers/misc/sony-laptop.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index f483c4221f7..571b211608d 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -1038,7 +1038,11 @@ static int sony_nc_add(struct acpi_device *device)
goto outinput;
}
- if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
+ if (acpi_video_backlight_support()) {
+ printk(KERN_INFO DRV_PFX "brightness ignored, must be "
+ "controlled by ACPI video driver\n");
+ } else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
+ &handle))) {
sony_backlight_device = backlight_device_register("sony", NULL,
NULL,
&sony_backlight_ops);
@@ -1920,7 +1924,6 @@ static int sonypi_misc_fasync(int fd, struct file *filp, int on)
static int sonypi_misc_release(struct inode *inode, struct file *file)
{
- sonypi_misc_fasync(-1, file, 0);
atomic_dec(&sonypi_compat.open_count);
return 0;
}