[PATCH v2 6/6] drm/vkms: Add missing check for CRTC initialization

[Louis Chauvet]

CRTC initialization call drm_mode_crtc_set_gamma_size without the proper
checks, introduce this check.

Signed-off-by: Louis Chauvet <louis.chau...@bootlin.com>
---
 drivers/gpu/drm/vkms/vkms_crtc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index ff55099c86ce..39802c928bdf 100644
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -293,7 +293,12 @@ struct vkms_crtc *vkms_crtc_init(struct vkms_device 
*vkmsdev, struct drm_plane *
        }
        drm_crtc_helper_add(&vkms_crtc->base, &vkms_crtc_helper_funcs);
 
-       drm_mode_crtc_set_gamma_size(&vkms_crtc->base, VKMS_LUT_SIZE);
+       ret = drm_mode_crtc_set_gamma_size(&vkms_crtc->base, VKMS_LUT_SIZE);
+       if (ret) {
+               DRM_DEV_ERROR(vkmsdev->drm.dev, "Failed to set gamma size\n");
+               return ERR_PTR(ret);
+       }
+
        drm_crtc_enable_color_mgmt(&vkms_crtc->base, 0, false, VKMS_LUT_SIZE);
 
        spin_lock_init(&vkms_crtc->lock);

-- 
2.44.2