diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-02-09 11:19:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-14 11:10:00 +0200 |
| commit | ea0d413094e064389755fd3585a4264b54d1d44a (patch) | |
| tree | 33b75160f0491251dcdf41622ab9e25187accd1a | |
| parent | 1659268d1ab4c11923b8fde86eca91f4ce256c96 (diff) | |
drm/atomic: Don't pollute crtc_state->mode_blob with error pointers
commit 439cf34c8e0a8a33d8c15a31be1b7423426bc765 upstream.
Make sure we don't assign an error pointer to crtc_state->mode_blob
as that will break all kinds of places that assume either NULL or a
valid pointer (eg. drm_property_blob_put()).
Cc: stable@vger.kernel.org
Reported-by: fuyufan <fuyufan@huawei.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220209091928.14766-1-ville.syrjala@linux.intel.com
Acked-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_uapi.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index 25c269bc4681..b6062833370f 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -75,15 +75,17 @@ int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, state->mode_blob = NULL; if (mode) { + struct drm_property_blob *blob; + drm_mode_convert_to_umode(&umode, mode); - state->mode_blob = - drm_property_create_blob(state->crtc->dev, - sizeof(umode), - &umode); - if (IS_ERR(state->mode_blob)) - return PTR_ERR(state->mode_blob); + blob = drm_property_create_blob(crtc->dev, + sizeof(umode), &umode); + if (IS_ERR(blob)) + return PTR_ERR(blob); drm_mode_copy(&state->mode, mode); + + state->mode_blob = blob; state->enable = true; DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n", mode->name, crtc->base.id, crtc->name, state); |