From: Qiheng Lin <linqiheng@huawei.com>
To: <mchehab@kernel.org>, <matthias.bgg@gmail.com>
Cc: <linux-media@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, Qiheng Lin <linqiheng@huawei.com>
Subject: [PATCH] media: platform: mtk-mdp3: Fix return value check in mdp_probe()
Date: Wed, 30 Nov 2022 16:13:12 +0800 [thread overview]
Message-ID: <20221130081312.35523-1-linqiheng@huawei.com> (raw)
In case of error, the function mtk_mutex_get()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().
Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver")
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
---
drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
index c413e59d4286..7a2d992dd842 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
@@ -207,8 +207,8 @@ static int mdp_probe(struct platform_device *pdev)
}
for (i = 0; i < MDP_PIPE_MAX; i++) {
mdp->mdp_mutex[i] = mtk_mutex_get(&mm_pdev->dev);
- if (!mdp->mdp_mutex[i]) {
- ret = -ENODEV;
+ if (IS_ERR(mdp->mdp_mutex[i])) {
+ ret = PTR_ERR(mdp->mdp_mutex[i]);
goto err_return;
}
}
--
2.32.0
next reply other threads:[~2022-11-30 7:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-30 8:13 Qiheng Lin [this message]
2022-11-30 9:44 ` AngeloGioacchino Del Regno
2022-12-01 2:09 ` Qiheng Lin
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