diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2018-02-05 11:45:53 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-02-13 19:31:20 +0100 |
| commit | c5611a8751e67595e4e7d3feaff3c900b92094b9 (patch) | |
| tree | b833cce9dd9ad3501f7ba151aadf09faeaa2a6b9 /drivers/iommu/amd_iommu.c | |
| parent | Linux 4.16-rc1 (diff) | |
| download | linux-c5611a8751e67595e4e7d3feaff3c900b92094b9.tar.xz linux-c5611a8751e67595e4e7d3feaff3c900b92094b9.zip | |
iommu: Do not return error code for APIs with size_t return type
Currently, iommu_unmap, iommu_unmap_fast and iommu_map_sg return
size_t. However, some of the return values are error codes (< 0),
which can be misinterpreted as large size. Therefore, returning size 0
instead to signify failure to map/unmap.
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 74788fdeb773..ecdeb045deef 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3050,7 +3050,7 @@ static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, size_t unmap_size; if (domain->mode == PAGE_MODE_NONE) - return -EINVAL; + return 0; mutex_lock(&domain->api_lock); unmap_size = iommu_unmap_page(domain, iova, page_size); |