Unverified Commit fe328477 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!6687 [sync] PR-6580: drm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip 

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/6580 
 
PR sync from: Xiongfeng Wang <wangxiongfeng2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/WORN7BWYNWIQZTCZ2HUOU34K7VVJBQC4/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9HK5V 
 
Link:https://gitee.com/openeuler/kernel/pulls/6687

 

Reviewed-by: default avatarWei Li <liwei391@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 82674c1e e64b384a

drivers/gpu/drm/mediatek/mtk_drm_crtc.c

+7 −5
Original line number Diff line number Diff line
@@ -84,12 +84,14 @@ static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc) 
	struct drm_crtc *crtc = &mtk_crtc->base;

	unsigned long flags;



	if (mtk_crtc->event) {

		spin_lock_irqsave(&crtc->dev->event_lock, flags);

		drm_crtc_send_vblank_event(crtc, mtk_crtc->event);

		drm_crtc_vblank_put(crtc);

		mtk_crtc->event = NULL;

		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);

	}

}



static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)

{