iommu/amd: Introduce get_amd_iommu_from_dev()

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Introduce get_amd_iommu_from_dev() and get_amd_iommu_from_dev_data().
And replace rlookup_amd_iommu() with the new helper function where
applicable to avoid unnecessary loop to look up struct amd_iommu from
struct device.

Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240205115615.6053-4-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Suravee Suthikulpanit 2024-02-05 11:56:01 +00:00 • committed by Joerg Roedel

parent 8e01797331

commit 6f35fe5d8a

3 changed files with 44 additions and 41 deletions

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15

drivers/iommu/amd/amd_iommu.h

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54

drivers/iommu/amd/iommu.c

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16

include/linux/iommu.h

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