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From:   Moudy Ho <moudy.ho@mediatek.com>
To:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
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CC:     Maoguang Meng <maoguang.meng@mediatek.com>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        daoyuan huang <daoyuan.huang@mediatek.com>,
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Subject: [RFC PATCH V0 05/10] media: mtk-mdp3: remove unnecessary Null check
Date:   Wed, 23 Jun 2021 15:35:44 +0800
Message-ID: <20210623073549.24170-5-moudy.ho@mediatek.com>
In-Reply-To: <20210623073549.24170-1-moudy.ho@mediatek.com>
References: <20210623073549.24170-1-moudy.ho@mediatek.com>
MIME-Version: 1.0
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From: daoyuan huang <daoyuan.huang@mediatek.com>

Remove logically unnecessary NULL check in call back function.

Due to no NULL callback param should occur in normal case;
and if we use NULL check to jump over this clock off step,
the clock ref. count may go asymmetric.

Signed-off-by: daoyuan huang <daoyuan.huang@mediatek.com>
---
 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
index 42a51061677a..df956ca3685c 100644
--- a/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
+++ b/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
@@ -349,13 +349,8 @@ static void mdp_auto_release_work(struct work_struct *work)
 				auto_release_work);
 	mdp = cb_param->mdp;
 
-	if (cb_param->comps && cb_param->num_comps) {
-		int i;
-
-		for (i = 0; i < cb_param->num_comps; i++)
-			mdp_comp_clock_off(&mdp->pdev->dev,
-					   &cb_param->comps[i]);
-	}
+	mdp_comp_clocks_off(&mdp->pdev->dev, cb_param->comps,
+			    cb_param->num_comps);
 
 	kfree(cb_param->comps);
 	kfree(cb_param);
-- 
2.18.0