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drm/edid: add missing NULL checks. 

Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Takashi Iwai 2012-04-20 12:59:33 +01:00 committed by Dave Airlie
parent b309bd37a1
commit fc48f169dd
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/drm_edid.c
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@ -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);