[PATCH 1/3] drm/simpledrm: Do not call drm_atomic_add_affected_planes()
Thomas Zimmermann
tzimmermann at suse.de
Tue Oct 11 13:06:19 UTC 2022
Hi
Am 10.10.22 um 19:02 schrieb Javier Martinez Canillas:
> There's no need to add planes to the atomic state. Remove the call
> to drm_atomic_add_affected_planes() from simpledrm.
>
> On full modesets, the DRM helpers already add a CRTC's planes to the
> atomic state; see drm_atomic_helper_check_modeset(). There's no reason
> to call drm_atomic_add_affected_planes() unconditionally in the CRTC's
> atomic_check() in simpledrm. It's also too late, as the atomic_check()
> of the added planes will not be called before the commit.
>
> Suggested-by: Thomas Zimmermann <tzimmermann at suse.de>
> Signed-off-by: Javier Martinez Canillas <javierm at redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann at suse.de>
There's also drm_atomic_add_affected_planes() in mgag200. Since you're
at it, I'd appreciate a patch.
Best regards
Thomas
> ---
>
> drivers/gpu/drm/tiny/simpledrm.c | 10 ++--------
> 1 file changed, 2 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c
> index ecd49a8f3334..f03f17f62a56 100644
> --- a/drivers/gpu/drm/tiny/simpledrm.c
> +++ b/drivers/gpu/drm/tiny/simpledrm.c
> @@ -549,17 +549,11 @@ static int simpledrm_crtc_helper_atomic_check(struct drm_crtc *crtc,
> struct drm_atomic_state *new_state)
> {
> struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(new_state, crtc);
> - int ret;
>
> if (!new_crtc_state->enable)
> - goto out;
> -
> - ret = drm_atomic_helper_check_crtc_primary_plane(new_crtc_state);
> - if (ret)
> - return ret;
> + return 0;
>
> -out:
> - return drm_atomic_add_affected_planes(new_state, crtc);
> + return drm_atomic_helper_check_crtc_primary_plane(new_crtc_state);
> }
>
> /*
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
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