From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Will Deacon <will@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>, <iommu@lists.linux.dev>,
<linux-mediatek@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, Yong Wu <yong.wu@mediatek.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
<mingyuan.ma@mediatek.com>, <yf.wang@mediatek.com>,
<libo.kang@mediatek.com>, <chengci.xu@mediatek.com>,
<youlin.pei@mediatek.com>, <anan.sun@mediatek.com>,
<xueqi.zhang@mediatek.com>, Guenter Roeck <groeck@chromium.org>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: [PATCH v6 2/6] iommu/mediatek: Use component_match_add
Date: Tue, 20 Sep 2022 14:37:29 +0800 [thread overview]
Message-ID: <20220920063733.21770-3-yong.wu@mediatek.com> (raw)
In-Reply-To: <20220920063733.21770-1-yong.wu@mediatek.com>
In order to simplify the error patch(avoid call of_node_put), Use
component_match_add instead component_match_add_release since we are only
interested in the "device" here. Then we could always call of_node_put in
normal path.
Strictly this is not a fixes patch, but it is a prepare for adding the
error path, thus I add a Fixes tag too.
Fixes: d2e9a1102cfc ("iommu/mediatek: Contain MM IOMMU flow with the MM TYPE")
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/iommu/mtk_iommu.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 21a8ce503a0e..83b279432406 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1066,19 +1066,17 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m
id = i;
plarbdev = of_find_device_by_node(larbnode);
- if (!plarbdev) {
- of_node_put(larbnode);
+ of_node_put(larbnode);
+ if (!plarbdev)
return -ENODEV;
- }
+
if (!plarbdev->dev.driver) {
- of_node_put(larbnode);
platform_device_put(plarbdev);
return -EPROBE_DEFER;
}
data->larb_imu[id].dev = &plarbdev->dev;
- component_match_add_release(dev, match, component_release_of,
- component_compare_of, larbnode);
+ component_match_add(dev, match, component_compare_dev, &plarbdev->dev);
platform_device_put(plarbdev);
}
--
2.18.0
next prev parent reply other threads:[~2022-09-20 6:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-20 6:37 [PATCH v6 0/6] iommu/mediatek: Improve safety from invalid dts input Yong Wu
2022-09-20 6:37 ` [PATCH v6 1/6] iommu/mediatek: Add platform_device_put for recovering the device refcnt Yong Wu
2022-09-20 6:37 ` Yong Wu [this message]
2022-09-20 6:37 ` [PATCH v6 3/6] iommu/mediatek: Add error path for loop of mm_dts_parse Yong Wu
2022-09-20 6:37 ` [PATCH v6 4/6] iommu/mediatek: Validate number of phandles associated with "mediatek,larbs" Yong Wu
2022-09-20 6:37 ` [PATCH v6 5/6] iommu/mediatek: Improve safety for mediatek,smi property in larb nodes Yong Wu
2022-09-20 6:37 ` [PATCH v6 6/6] iommu/mediatek: Remove unused "mapping" member from mtk_iommu_data Yong Wu
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