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| author | Christoph Hellwig <hch@lst.de> | 2017-05-21 14:17:10 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-06-28 06:54:33 -0700 |
| commit | 6009faa43f804c99b3d8fff94fa1e0692be70358 (patch) | |
| tree | 05168471d1bc2b5d056a7e77bdc1bfd8ff844eb2 /arch/powerpc/kernel/dma-iommu.c | |
| parent | ceaf481c4f6ae6090288528825abc7d051bb1032 (diff) | |
| download | talos-obmc-linux-6009faa43f804c99b3d8fff94fa1e0692be70358.tar.gz talos-obmc-linux-6009faa43f804c99b3d8fff94fa1e0692be70358.zip | |
powerpc: implement ->mapping_error
DMA_ERROR_CODE is going to go away, so don't rely on it. Instead
define a ->mapping_error method for all IOMMU based dma operation
instances. The direct ops don't ever return an error and don't
need a ->mapping_error method.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/dma-iommu.c')
| -rw-r--r-- | arch/powerpc/kernel/dma-iommu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c index fb7cbaa37658..8f7abf9baa63 100644 --- a/arch/powerpc/kernel/dma-iommu.c +++ b/arch/powerpc/kernel/dma-iommu.c @@ -105,6 +105,11 @@ static u64 dma_iommu_get_required_mask(struct device *dev) return mask; } +int dma_iommu_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr == IOMMU_MAPPING_ERROR; +} + struct dma_map_ops dma_iommu_ops = { .alloc = dma_iommu_alloc_coherent, .free = dma_iommu_free_coherent, @@ -115,5 +120,6 @@ struct dma_map_ops dma_iommu_ops = { .map_page = dma_iommu_map_page, .unmap_page = dma_iommu_unmap_page, .get_required_mask = dma_iommu_get_required_mask, + .mapping_error = dma_iommu_mapping_error, }; EXPORT_SYMBOL(dma_iommu_ops); |
