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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-09 15:15:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-09 15:15:47 -0700
commit28b47809b2171a6cfbab839936b24280639c9f85 (patch)
tree23c918f66783e269e95680136f80362d9c62070d /drivers/acpi/scan.c
parent4a1e31c68e9f40be32838944931178b0d9ed9162 (diff)
parent2c0248d68880fc0e783af1048b3367ee5d4412f0 (diff)
downloadlinux-28b47809b2171a6cfbab839936b24280639c9f85.tar.bz2
Merge tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel: - code optimizations for the Intel VT-d driver - ability to switch off a previously enabled Intel IOMMU - support for 'struct iommu_device' for OMAP, Rockchip and Mediatek IOMMUs - header optimizations for IOMMU core code headers and a few fixes that became necessary in other parts of the kernel because of that - ACPI/IORT updates and fixes - Exynos IOMMU optimizations - updates for the IOMMU dma-api code to bring it closer to use per-cpu iova caches - new command-line option to set default domain type allocated by the iommu core code - another command line option to allow the Intel IOMMU switched off in a tboot environment - ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using an IDENTITY domain in conjunction with DMA ops, Support for SMR masking, Support for 16-bit ASIDs (was previously broken) - various other small fixes and improvements * tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (63 commits) soc/qbman: Move dma-mapping.h include to qman_priv.h soc/qbman: Fix implicit header dependency now causing build fails iommu: Remove trace-events include from iommu.h iommu: Remove pci.h include from trace/events/iommu.h arm: dma-mapping: Don't override dma_ops in arch_setup_dma_ops() ACPI/IORT: Fix CONFIG_IOMMU_API dependency iommu/vt-d: Don't print the failure message when booting non-kdump kernel iommu: Move report_iommu_fault() to iommu.c iommu: Include device.h in iommu.h x86, iommu/vt-d: Add an option to disable Intel IOMMU force on iommu/arm-smmu: Return IOVA in iova_to_phys when SMMU is bypassed iommu/arm-smmu: Correct sid to mask iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid() iommu: Make iommu_bus_notifier return NOTIFY_DONE rather than error code omap3isp: Remove iommu_group related code iommu/omap: Add iommu-group support iommu/omap: Make use of 'struct iommu_device' iommu/omap: Store iommu_dev pointer in arch_data iommu/omap: Move data structures to omap-iommu.h iommu/omap: Drop legacy-style device support ...
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r--drivers/acpi/scan.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index c26931067415..e39ec7b7cb67 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1363,20 +1363,25 @@ enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev)
* @dev: The pointer to the device
* @attr: device dma attributes
*/
-void acpi_dma_configure(struct device *dev, enum dev_dma_attr attr)
+int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr)
{
const struct iommu_ops *iommu;
+ u64 size;
iort_set_dma_mask(dev);
iommu = iort_iommu_configure(dev);
+ if (IS_ERR(iommu))
+ return PTR_ERR(iommu);
+ size = max(dev->coherent_dma_mask, dev->coherent_dma_mask + 1);
/*
* Assume dma valid range starts at 0 and covers the whole
* coherent_dma_mask.
*/
- arch_setup_dma_ops(dev, 0, dev->coherent_dma_mask + 1, iommu,
- attr == DEV_DMA_COHERENT);
+ arch_setup_dma_ops(dev, 0, size, iommu, attr == DEV_DMA_COHERENT);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(acpi_dma_configure);