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drm/exynos: Fix potential NULL pointer dereference

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drm_mode_create() returns NULL if it fails to create
a new display mode. Check the value returned to avoid NULL
pointer deferencing later.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Sachin Kamat 2012-09-18 15:51:30 +05:30 • committed by Inki Dae
parent 291257cf4c
commit 53bd555654
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/exynos/exynos_drm_connector.c
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@ -150,8 +150,12 @@ static int exynos_drm_connector_get_modes(struct drm_connector *connector)
count = drm_add_edid_modes(connector, edid); count = drm_add_edid_modes(connector, edid);
kfree(edid); kfree(edid);
} else { } else {
struct drm_display_mode *mode = drm_mode_create(connector->dev);
struct exynos_drm_panel_info *panel; struct exynos_drm_panel_info *panel;
struct drm_display_mode *mode = drm_mode_create(connector->dev);
if (!mode) {
DRM_ERROR("failed to create a new display mode.\n");
return 0;
}
if (display_ops->get_panel) if (display_ops->get_panel)
panel = display_ops->get_panel(manager->dev); panel = display_ops->get_panel(manager->dev);