diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-05-25 21:50:45 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2018-06-11 20:22:44 +0300 |
| commit | e00fb8564ee98c5c3a72c74b1a27e441abff6cca (patch) | |
| tree | 79c66fa13861f09f232aa77229385a7e0e01e864 /drivers/gpu/drm/drm_plane.c | |
| parent | 2f958af7fc2483e09a048308fe55399343d8f20c (diff) | |
| download | lwn-e00fb8564ee98c5c3a72c74b1a27e441abff6cca.tar.gz lwn-e00fb8564ee98c5c3a72c74b1a27e441abff6cca.zip | |
drm: Stop updating plane->crtc/fb/old_fb on atomic drivers
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>
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 7ce88dff871d..534b57933576 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -651,9 +651,11 @@ static int __setplane_internal(struct drm_plane *plane, crtc_x, crtc_y, crtc_w, crtc_h, src_x, src_y, src_w, src_h, ctx); if (!ret) { - plane->crtc = crtc; - plane->fb = fb; - drm_framebuffer_get(plane->fb); + if (!plane->state) { + plane->crtc = crtc; + plane->fb = fb; + drm_framebuffer_get(plane->fb); + } } else { plane->old_fb = NULL; } @@ -1093,8 +1095,10 @@ retry: /* Keep the old fb, don't unref it. */ plane->old_fb = NULL; } else { - plane->fb = fb; - drm_framebuffer_get(fb); + if (!plane->state) { + plane->fb = fb; + drm_framebuffer_get(fb); + } } out: |