Hi, i am actually heavily using the ACPI video extension for my Thinkpad X61 Tablet. I have bound the input events triggered by the brightness up/down keys to a simple echo <value> > /sys/class/backlight/acpi_video1/brightness but everytime the event is triggered and acpi_video_device_lcd_set_level() is called i got a notificication in my kernel log like: set_level status: 0 set_level status: 0 set_level status: 0 set_level status: 0 ... I have attached a patch to remove this one printk() i really don't know why it is needed. :) --Maik
diff -Nur linux-2.6.23-rc6-acpi-video-fix/drivers/acpi/video.c linux-2.6.23-rc6/drivers/acpi/video.c --- linux-2.6.23-rc6-acpi-video-fix/drivers/acpi/video.c 2007-09-11 04:50:29.000000000 +0200 +++ linux-2.6.23-rc6/drivers/acpi/video.c 2007-09-14 22:06:21.000000000 +0200 @@ -417,7 +417,6 @@ arg0.integer.value = level; status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL); - printk(KERN_DEBUG "set_level status: %x\n", status); return status; }
