On Thu, Jan 14, 2016 at 09:41:48AM +0100, Hans de Goede wrote:
> acpi_video_handles_brightness_key_presses()'s may return false if the i915
> driver is not loaded yet when thinkpad_acpi loads, and then return true
> after the i915 driver has loaded. This means that thinkpad_acpi cannot
> use it as is since thinkpad_acpi caches the return value.
>
> This reverts commit 7714687a2b2d ("thinkpad_acpi: Use
> acpi_video_handles_brightness_key_presses()").
>
Rafael, I presume this would go through your tree?
No objection from me. Henrique?
Acked-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> drivers/platform/x86/thinkpad_acpi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index f453d5d..0bed473 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -3488,7 +3488,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
> /* Do not issue duplicate brightness change events to
> * userspace. tpacpi_detect_brightness_capabilities() must have
> * been called before this point */
> - if (acpi_video_handles_brightness_key_presses()) {
> + if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
> pr_info("This ThinkPad has standard ACPI backlight "
> "brightness control, supported by the ACPI "
> "video driver\n");
> --
> 2.5.0
>
>
--
Darren Hart
Intel Open Source Technology Center
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