[PATCH 04/10] drm/crtc: add interface to reinitialise the legacy mode group

[Thierry Reding]

On Mon, May 12, 2014 at 04:46:41PM +1000, Dave Airlie wrote:
> From: Dave Airlie <airlied at redhat.com>
> 
> This can be called to update things after dynamic connectors/encoders
> are created/deleted.
> 
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
>  drivers/gpu/drm/drm_crtc.c | 9 +++++++++
>  include/drm/drm_crtc.h     | 1 +
>  2 files changed, 10 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index f1753e6..8bf87a6 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1421,6 +1421,15 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
>  }
>  EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
>  
> +void drm_reinit_primary_mode_group(struct drm_device *dev)
> +{
> +	drm_modeset_lock_all(dev);
> +	drm_mode_group_destroy(&dev->primary->mode_group);
> +	drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
> +	drm_modeset_unlock_all(dev);
> +}
> +EXPORT_SYMBOL(drm_reinit_primary_mode_group);
> +
>  /**
>   * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
>   * @out: drm_mode_modeinfo struct to return to the user
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index c6b9e8a..55bc523 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -916,6 +916,7 @@ extern const char *drm_get_tv_select_name(int val);
>  extern void drm_fb_release(struct drm_file *file_priv);
>  extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
>  extern void drm_mode_group_destroy(struct drm_mode_group *group);
> +extern void drm_reinit_primary_mode_group(struct drm_device *dev);

There was a patch series once to remove all usage of extern from
prototypes. Was there an official decision against that which I missed,
or did it just fall off the table?

Thierry
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