linux-kernel - Re: [PATCH] i915: Register ACPI video even when not modesetting

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Date:	Fri, 24 Apr 2009 00:43:00 -0400 (EDT)
From:	Len Brown <lenb@...nel.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	intel-gfx@...ts.freedesktop.org, linux-acpi@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] i915: Register ACPI video even when not modesetting

applied

(and acpi-devel fixed to linux-acpi on cc:-)

thanks,
Len Brown, Intel Open Source Technology Center

On Wed, 15 Apr 2009, Matthew Garrett wrote:

> The ACPI video driver defers registration to the i915 driver if the 
> system supports opregion-mediated backlight control. This registration 
> was only being performed in the KMS case. Ensure it's done even if we 
> don't have modesetting enabled.
> 
> Signed-off-by: Matthew Garrett <mjg@...hat.com>
> 
> diff --git a/drivers/gpu/drm/i915/i915_opregion.c b/drivers/gpu/drm/i915/i915_opregion.c
> index 6942772..8dc1fd3 100644
> --- a/drivers/gpu/drm/i915/i915_opregion.c
> +++ b/drivers/gpu/drm/i915/i915_opregion.c
> @@ -370,11 +370,8 @@ int intel_opregion_init(struct drm_device *dev, int resume)
>  	if (mboxes & MBOX_ACPI) {
>  		DRM_DEBUG("Public ACPI methods supported\n");
>  		opregion->acpi = base + OPREGION_ACPI_OFFSET;
> -		if (drm_core_check_feature(dev, DRIVER_MODESET)) {
> +		if (drm_core_check_feature(dev, DRIVER_MODESET))
>  			intel_didl_outputs(dev);
> -			if (!resume)
> -				acpi_video_register();
> -		}
>  	} else {
>  		DRM_DEBUG("Public ACPI methods not supported\n");
>  		err = -ENOTSUPP;
> @@ -391,6 +388,10 @@ int intel_opregion_init(struct drm_device *dev, int resume)
>  		opregion->asle = base + OPREGION_ASLE_OFFSET;
>  	}
>  
> +	if (!resume)
> +		acpi_video_register();
> +
> +
>  	/* Notify BIOS we are ready to handle ACPI video ext notifs.
>  	 * Right now, all the events are handled by the ACPI video module.
>  	 * We don't actually need to do anything with them. */
> 
> -- 
> Matthew Garrett | mjg59@...f.ucam.org
> --
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