A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 11:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

iommu: Only allow iommu_map/unmap for paging domains

Browse source 
Check for the new __IOMMU_DOMAIN_PAGING flag before calling
into the iommu drivers ->map and ->unmap call-backs.

Tested-by: Thierry Reding <[email protected]>
Tested-by: Heiko Stuebner <[email protected]>
Reviewed-by: Alex Williamson <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
This commit is contained in:
Joerg Roedel 2015-03-26 13:43:06 +01:00
commit a10315e5ef
1 changed files with 6 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/iommu/iommu.c
View file

@ -1063,6 +1063,9 @@ int iommu_map(struct iommu_domain *domain, unsigned long iova,
domain->ops->pgsize_bitmap == 0UL))
return -ENODEV;
if (unlikely(!(domain->type & __IOMMU_DOMAIN_PAGING)))
return -EINVAL;
/* find out the minimum page size supported */
min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap);
@ -1114,6 +1117,9 @@ size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t size)
domain->ops->pgsize_bitmap == 0UL))
return -ENODEV;
if (unlikely(!(domain->type & __IOMMU_DOMAIN_PAGING)))
return -EINVAL;
/* find out the minimum page size supported */
min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap);