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drm/imx: parallel-display: check return code from of_get_drm_display_mode()

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of_get_drm_display_mode() may fail. Check its return code and bail out
on error.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Lothar Waßmann 2016-07-12 15:30:01 +02:00 committed by Philipp Zabel
parent b575b31387
commit 76ecd9c9fb
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/imx/parallel-display.c
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@ -73,10 +73,16 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector)
if (np) { if (np) {
struct drm_display_mode *mode = drm_mode_create(connector->dev); struct drm_display_mode *mode = drm_mode_create(connector->dev);
int ret;
if (!mode) if (!mode)
return -EINVAL; return -EINVAL;
of_get_drm_display_mode(np, &imxpd->mode, OF_USE_NATIVE_MODE);
ret = of_get_drm_display_mode(np, &imxpd->mode,
OF_USE_NATIVE_MODE);
if (ret)
return ret;
drm_mode_copy(mode, &imxpd->mode); drm_mode_copy(mode, &imxpd->mode);
mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
drm_mode_probed_add(connector, mode); drm_mode_probed_add(connector, mode);