Re: [PATCH 1/2] drm/tegra: Fix possible CRTC mask for RGB outputs

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On 01/13/2014 07:21 AM, Thierry Reding wrote:
> The mask of possible CRTCs that an output (DRM encoder) can be attached
> to is relative to the position within the DRM device's list of CRTCs.
> Deferred probing can cause this to not match the pipe number associated
> with a CRTC. Use the newly introduced drm_crtc_mask() to compute the
> mask by looking up the proper index of the given CRTC in the list.

> diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c

> @@ -258,7 +258,7 @@ int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc)

> -	rgb->output.encoder.possible_crtcs = 1 << dc->pipe;
> +	rgb->output.encoder.possible_crtcs = drm_crtc_mask(&dc->base);

For me, on top of either next-20140109 or next-20140113, this causes:

> drivers/gpu/drm/tegra/rgb.c: In function ‘tegra_dc_rgb_init’:
> drivers/gpu/drm/tegra/rgb.c:261:2: error: implicit declaration of function ‘drm_crtc_mask’ [-Werror=implicit-function-declaration]


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