Commit e1e1af91 authored by Zhang Zekun's avatar Zhang Zekun Committed by Neil Armstrong
Browse files

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



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: 0ef94554 ("drm/panel: himax-hx83102: Break out as separate driver")
Signed-off-by: default avatarZhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241025073408.27481-3-zhangzekun11@huawei.com


Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025073408.27481-3-zhangzekun11@huawei.com
parent 0cff90de

drivers/gpu/drm/panel/panel-himax-hx83102.c

+2 −0
Original line number Diff line number Diff line
@@ -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);