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| author | Joerg Roedel <jroedel@suse.de> | 2015-05-28 18:41:38 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-06-11 09:42:21 +0200 |
| commit | 063071dff53858027e95d3cfcedb1780952302ad (patch) | |
| tree | 7c41f67ea59d828fd83562d856f588e8ec7aa382 /drivers/iommu | |
| parent | 35cf248f8860b8d2956516d6cdf7e57ff4ed4cbb (diff) | |
| download | op-kernel-dev-063071dff53858027e95d3cfcedb1780952302ad.zip op-kernel-dev-063071dff53858027e95d3cfcedb1780952302ad.tar.gz | |
iommu/amd: Use default domain if available for DMA-API
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 22d38e3..ae7d636 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2495,12 +2495,19 @@ void amd_iommu_init_notifier(void) static struct protection_domain *get_domain(struct device *dev) { struct protection_domain *domain; + struct iommu_domain *io_domain; struct dma_ops_domain *dma_dom; u16 devid = get_device_id(dev); if (!check_device(dev)) return ERR_PTR(-EINVAL); + io_domain = iommu_get_domain_for_dev(dev); + if (io_domain) { + domain = to_pdomain(io_domain); + return domain; + } + domain = domain_for_device(dev); if (domain != NULL && !dma_ops_domain(domain)) return ERR_PTR(-EBUSY); |
