[PATCH xf86-video-amdgpu] Add checking color management properties

[Aaron Liu]

Add gamma_lut/degamma_lut/ctm checking before pushing
staged color management properties on the CRTC.
If above object is NULL, return directly.

Signed-off-by: Aaron Liu <aaron....@amd.com>
---
 src/drmmode_display.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index 68fca1b..006ae7c 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -1116,6 +1116,11 @@ static int drmmode_crtc_push_cm_prop(xf86CrtcPtr crtc,
 
        switch (cm_prop_index) {
        case CM_GAMMA_LUT:
+               if (!drmmode_crtc->gamma_lut) {
+                       xf86DrvMsg(crtc->scrn->scrnIndex, X_WARNING,
+                                  "gamma_lut is NULL!\n");
+                       return BadRequest;
+               }
                /* Calculate the expected size of value in bytes */
                expected_bytes = sizeof(struct drm_color_lut) *
                                        drmmode->gamma_lut_size;
@@ -1154,11 +1159,21 @@ static int drmmode_crtc_push_cm_prop(xf86CrtcPtr crtc,
                }
                break;
        case CM_DEGAMMA_LUT:
+               if (!drmmode_crtc->degamma_lut) {
+                       xf86DrvMsg(crtc->scrn->scrnIndex, X_WARNING,
+                                  "degamma_lut is NULL!\n");
+                       return BadRequest;
+               }
                expected_bytes = sizeof(struct drm_color_lut) *
                                        drmmode->degamma_lut_size;
                blob_data = drmmode_crtc->degamma_lut;
                break;
        case CM_CTM:
+               if (!drmmode_crtc->ctm) {
+                       xf86DrvMsg(crtc->scrn->scrnIndex, X_WARNING,
+                                  "ctm is NULL!\n");
+                       return BadRequest;
+               }
                expected_bytes = sizeof(struct drm_color_ctm);
                blob_data = drmmode_crtc->ctm;
                break;
-- 
2.17.1

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