On Thu, 2006-11-09 at 22:32 -0200, Henrique de Moraes Holschuh wrote: > ACPI drivers like ibm-acpi are moving to the backlight sysfs infrastructure. > During ibm-acpi testing, I have noticed that backlight_device_unregister() > sets the display brightness and power to zero. > > This causes the display to be dimmed on ibm-acpi module removal. It will > affect all other ACPI drivers that are being converted to use the backlight > class, as well. It also affects a number of framebuffer devices that are > used on desktops and laptops which might also not want such behaviour. > > Since working around this behaviour requires undesireable hacks, Richard > Purdie decided that we would be better off reverting the changes in the > sysfs class, and adding the code to dim and power off the backlight device > to the drivers that want it. This patch is my attempt to do so. > > Patch against latest linux-2.6.git. Changes untested, as I lack the > required hardware. Still, they are trivial enough that, apart from typos, > there is little chance of getting them wrong. > > Signed-off-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx> > Cc: Richard Purdie <rpurdie@xxxxxxxxx> > Cc: Andriy Skulysh <askulysh@xxxxxxxxxxxxx> > Cc: Antonino Daplas <adaplas@xxxxxxx> Acked-by: Richard Purdie <rpurdie@xxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
