[PATCH v5 2/6] iommu/mediatek: Use component_match_add
From: Yong Wu <yong.wu@mediatek.com>
Date: 2022-09-19 09:24:52
Also in:
linux-iommu, linux-mediatek, lkml
Subsystem:
iommu subsystem, mediatek iommu driver, the rest · Maintainers:
Joerg Roedel, Will Deacon, Yong Wu, Linus Torvalds
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>
---
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
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