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| author |   Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-08-23 15:59:15 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-09-22 13:42:28 +0200 |
| commit | bb2b7ffbc4e25b0c4839317b6c31cb768efe8b1f (patch) | |
| tree | 0ef2dd25a1cf22b32aa559fd5c4beb7d54fa1b1f /drivers/iommu | |
| parent | s390: migrate exception table users off module.h and onto extable.h (diff) | |
| download | linux-dev-bb2b7ffbc4e25b0c4839317b6c31cb768efe8b1f.tar.xz linux-dev-bb2b7ffbc4e25b0c4839317b6c31cb768efe8b1f.zip | |
iommu/s390: simplify registration of I/O address translation parameters
When a new function is attached to an iommu domain we need to register
I/O address translation parameters. Since commit
69eea95c ("s390/pci_dma: fix DMA table corruption with > 4 TB main memory")
start_dma and end_dma correctly describe the range of usable I/O addresses.
Simplify the code by using these values directly.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/s390-iommu.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index a04d491cf431..3b44b1d82f3b 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -101,8 +101,7 @@ static int s390_iommu_attach_device(struct iommu_domain *domain, zpci_dma_exit_device(zdev); zdev->dma_table = s390_domain->dma_table; - rc = zpci_register_ioat(zdev, 0, zdev->start_dma + PAGE_OFFSET, - zdev->start_dma + zdev->iommu_size - 1, + rc = zpci_register_ioat(zdev, 0, zdev->start_dma, zdev->end_dma, (u64) zdev->dma_table); if (rc) goto out_restore; |