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drm/panel: himax-hx83102: Add a check to prevent NULL pointer dereference

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drm_mode_duplicate() could return NULL due to lack of memory,
which will then call NULL pointer dereference. Add a check to
prevent it.

Fixes: 0ef94554dc ("drm/panel: himax-hx83102: Break out as separate driver")
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241025073408.27481-3-zhangzekun11@huawei.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025073408.27481-3-zhangzekun11@huawei.com
This commit is contained in:
Zhang Zekun
2024-10-25 15:34:08 +08:00
committed by Neil Armstrong
parent 0cff90dec6
commit e1e1af9148
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/panel/panel-himax-hx83102.c
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@@ -565,6 +565,8 @@ static int hx83102_get_modes(struct drm_panel *panel,
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, m);
if (!mode)
return -ENOMEM;
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);