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iommu/mediatek: Add list_del in mtk_iommu_remove

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Lack the list_del in the mtk_iommu_remove, and remove
bus_set_iommu(*, NULL) since there may be several iommu HWs.
we can not bus_set_iommu null when one iommu driver unbind.

This could be a fix for mt2712 which support 2 M4U HW and list them.

Fixes: 7c3a2ec02806 ("iommu/mediatek: Merge 2 M4U HWs into one iommu domain")
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/20220503071427.2285-6-yong.wu@mediatek.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yong Wu 2022-05-03 15:13:56 +08:00 committed by Joerg Roedel
parent 645b87c190
commit ee55f75e4b
1 changed files with 1 additions and 2 deletions
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3
drivers/iommu/mtk_iommu.c
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@ -955,8 +955,7 @@ static int mtk_iommu_remove(struct platform_device *pdev)
iommu_device_sysfs_remove(&data->iommu);
iommu_device_unregister(&data->iommu);
if (iommu_present(&platform_bus_type))
bus_set_iommu(&platform_bus_type, NULL);
list_del(&data->list);
clk_disable_unprepare(data->bclk);
device_link_remove(data->smicomm_dev, &pdev->dev);