diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-01-10 05:54:04 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-01-13 18:39:14 +0300 |
| commit | 1b932ceddd19de1cdf2a86f1fca77c37dad758cc (patch) | |
| tree | 386e13de2bfa6c04917c0261e6331d9c5aa0f741 /drivers/iommu/exynos-iommu.c | |
| parent | b7bfaa761d760e72a969d116517eaa12e404c262 (diff) | |
| download | linux-1b932ceddd19de1cdf2a86f1fca77c37dad758cc.tar.xz | |
iommu: Remove detach_dev callbacks
The iommu core calls the driver's detach_dev domain op callback only when
a device is finished assigning to user space and
iommu_group_release_dma_owner() is called to return the device to the
kernel, where iommu core wants to set the default domain to the device but
the driver didn't provide one.
In other words, if any iommu driver provides default domain support, the
.detach_dev callback will never be called. This removes the detach_dev
callbacks in those IOMMU drivers that support default domain.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Sven Peter <sven@svenpeter.dev> # apple-dart
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com> # sprd
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com> # amd
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20230110025408.667767-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/exynos-iommu.c')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index b0cde2211987..29ec713e8a21 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1404,7 +1404,6 @@ static const struct iommu_ops exynos_iommu_ops = { .of_xlate = exynos_iommu_of_xlate, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = exynos_iommu_attach_device, - .detach_dev = exynos_iommu_detach_device, .map = exynos_iommu_map, .unmap = exynos_iommu_unmap, .iova_to_phys = exynos_iommu_iova_to_phys, |