diff options
| author | Yong Wu | 2022-10-18 10:42:54 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2022-12-31 13:32:51 +0100 |
| commit | 21f56af865837b52c7007d0de66b26122e8e2fa0 (patch) | |
| tree | 64dc5ceb3724be6bc228786140d42e33a72cc75d /drivers/iommu | |
| parent | 44d7712267d1711f215805c32bdc4d423a57a5c7 (diff) | |
iommu/mediatek: Use component_match_add
[ Upstream commit b5765a1b44bea9dfcae69c53ffeb4c689d0922a7 ]
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>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20221018024258.19073-3-yong.wu@mediatek.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/mtk_iommu.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index febcca8fcbcf..ba5abfc2890c 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1069,19 +1069,17 @@ 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); } |