Messages in this thread Patch in this message | | | From | Lu Baolu <> | Subject | [PATCH v4 15/19] iommu/s390: Add set_platform_dma_ops callback | Date | Wed, 4 Jan 2023 20:57:21 +0800 |
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This IOMMU driver doesn't support default domain. Add the implementation of set_platform_dma_ops callback so that the IOMMU core could return the DMA control. With the set_platform_dma implemented, there's no need for detach_dev. Remove it to avoid dead code.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> --- drivers/iommu/s390-iommu.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index ed33c6cce083..5591dab99446 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -144,13 +144,10 @@ static int s390_iommu_attach_device(struct iommu_domain *domain, return 0; } -static void s390_iommu_detach_device(struct iommu_domain *domain, - struct device *dev) +static void s390_iommu_set_platform_dma(struct device *dev) { struct zpci_dev *zdev = to_zpci_dev(dev); - WARN_ON(zdev->s390_domain != to_s390_domain(domain)); - __s390_iommu_detach_device(zdev); zpci_dma_init_device(zdev); } @@ -435,11 +432,11 @@ static const struct iommu_ops s390_iommu_ops = { .probe_device = s390_iommu_probe_device, .release_device = s390_iommu_release_device, .device_group = generic_device_group, + .set_platform_dma_ops = s390_iommu_set_platform_dma, .pgsize_bitmap = SZ_4K, .get_resv_regions = s390_iommu_get_resv_regions, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = s390_iommu_attach_device, - .detach_dev = s390_iommu_detach_device, .map_pages = s390_iommu_map_pages, .unmap_pages = s390_iommu_unmap_pages, .flush_iotlb_all = s390_iommu_flush_iotlb_all, -- 2.34.1
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