diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/pci-nommu.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c index a88952ef371c..085fe6ce4049 100644 --- a/arch/x86/kernel/pci-nommu.c +++ b/arch/x86/kernel/pci-nommu.c @@ -11,6 +11,8 @@ #include <asm/iommu.h> #include <asm/dma.h> +#define NOMMU_MAPPING_ERROR 0 + static int check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size) { @@ -33,7 +35,7 @@ static dma_addr_t nommu_map_page(struct device *dev, struct page *page, dma_addr_t bus = page_to_phys(page) + offset; WARN_ON(size == 0); if (!check_addr("map_single", dev, bus, size)) - return DMA_ERROR_CODE; + return NOMMU_MAPPING_ERROR; flush_write_buffers(); return bus; } @@ -88,6 +90,11 @@ static void nommu_sync_sg_for_device(struct device *dev, flush_write_buffers(); } +static int nommu_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr == NOMMU_MAPPING_ERROR; +} + const struct dma_map_ops nommu_dma_ops = { .alloc = dma_generic_alloc_coherent, .free = dma_generic_free_coherent, @@ -96,4 +103,5 @@ const struct dma_map_ops nommu_dma_ops = { .sync_single_for_device = nommu_sync_single_for_device, .sync_sg_for_device = nommu_sync_sg_for_device, .is_phys = 1, + .mapping_error = nommu_mapping_error, }; |