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drm: Stop updating plane->crtc/fb/old_fb on atomic drivers

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Stop playing around with plane->crtc/fb/old_fb with atomic
drivers. Make life a lot simpler when we don't have to do the
magic old_fb vs. fb dance around plane updates. That way we
can't risk plane->fb getting out of sync with plane->state->fb
and we're less likely to leak any refcounts as well.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180525185045.29689-14-ville.syrjala@linux.intel.com
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
This commit is contained in:
Ville Syrjälä
2018-05-25 21:50:45 +03:00
parent 2f958af7fc
commit e00fb8564e
8 changed files with 24 additions and 87 deletions
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8
drivers/gpu/drm/drm_crtc.c
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@@ -479,8 +479,12 @@ static int __drm_mode_set_config_internal(struct drm_mode_set *set,
ret = crtc->funcs->set_config(set, ctx);
if (ret == 0) {
crtc->primary->crtc = fb ? crtc : NULL;
crtc->primary->fb = fb;
struct drm_plane *plane = crtc->primary;
if (!plane->state) {
plane->crtc = fb ? crtc : NULL;
plane->fb = fb;
}
}
drm_for_each_crtc(tmp, crtc->dev) {