drm/edid: add missing NULL checks.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 38ee2f22304cfa7b8d152fbd4008fd86073231b9..bad2f11aa224d19ab061dfdb55a46cf9a47a78f2 100644 (file)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -779,6 +779,8 @@ drm_mode_std(struct drm_connector *connector, struct edid *edid,
                 * secondary GTF curve.  Please don't do that.
                 */
                mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0);
+               if (!mode)
+                       return NULL;
                if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {
                        drm_mode_destroy(dev, mode);
                        mode = drm_gtf_mode_complex(dev, hsize, vsize,
@@ -1048,6 +1050,8 @@ drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,
        for (i = 0; i < num_extra_modes; i++) {
                const struct minimode *m = &extra_modes[i];
                newmode = drm_gtf_mode(dev, m->w, m->h, m->r, 0, 0);
+               if (!newmode)
+                       return modes;
 
                if (!mode_in_range(newmode, edid, timing)) {
                        drm_mode_destroy(dev, newmode);
@@ -1073,6 +1077,8 @@ drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,
        for (i = 0; i < num_extra_modes; i++) {
                const struct minimode *m = &extra_modes[i];
                newmode = drm_cvt_mode(dev, m->w, m->h, m->r, rb, 0, 0);
+               if (!newmode)
+                       return modes;
 
                if (!mode_in_range(newmode, edid, timing)) {
                        drm_mode_destroy(dev, newmode);