diff options
| author | Sean Paul <seanpaul@chromium.org> | 2019-06-17 14:15:42 -0400 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2019-06-18 11:44:00 -0400 |
| commit | b7a3623d87e912f2633a6010cbcb1a78ab11d26d (patch) | |
| tree | 0fc47502499def587e2f3c0749efd1758848f5bc /drivers/gpu/drm/rcar-du | |
| parent | 7786fd1087774c6090775932290f33ac73044f41 (diff) | |
drm/rcar-du: Fix error check when retrieving crtc state
drm_atomic_get_crtc_state() returns an error pointer when it fails, so
the null check is doing nothing here.
Credit to 0-day/Dan Carpenter for reporting this.
Fixes: 6f3b62781bbd ("drm: Convert connector_helper_funcs->atomic_check to accept drm_atomic_state")
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [for rcar lvds]
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Karol Herbst <karolherbst@gmail.com>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: dri-devel@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190617181548.124134-1-sean@poorly.run
Diffstat (limited to 'drivers/gpu/drm/rcar-du')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_lvds.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c index f2a5d4d99707..1c62578590f4 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c @@ -115,8 +115,8 @@ static int rcar_lvds_connector_atomic_check(struct drm_connector *connector, /* We're not allowed to modify the resolution. */ crtc_state = drm_atomic_get_crtc_state(state, conn_state->crtc); - if (!crtc_state) - return -EINVAL; + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); if (crtc_state->mode.hdisplay != panel_mode->hdisplay || crtc_state->mode.vdisplay != panel_mode->vdisplay) |