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| author | Yong Wu <yong.wu@mediatek.com> | 2022-05-03 10:13:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-14 19:11:43 +0300 |
| commit | e4db5f4b680a9ce1f60a4f4a915e804187f767f4 (patch) | |
| tree | a07351f2e0b638f52961fe611aab3e7018103a84 /drivers | |
| parent | 5e47a7add3dda7f236548c5ec3017776dc2a729f (diff) | |
| download | linux-e4db5f4b680a9ce1f60a4f4a915e804187f767f4.tar.xz | |
iommu/mediatek: Add list_del in mtk_iommu_remove
[ Upstream commit ee55f75e4bcade81d253163641b63bef3e76cac4 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/mtk_iommu.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index c2f6c78fee44..18d7c818a174 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -769,8 +769,7 @@ 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); devm_free_irq(&pdev->dev, data->irq, data); |