| Message ID | 20151023210115.GH10197@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index a21da59..76ba470 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -52,6 +52,14 @@ static inline int dma_set_mask(struct device *dev, u64 mask) return -EINVAL; } +/* for IOMMU_PAGE_SHIFT */ +#include <asm/iommu_common.h> +#define HAVE_ARCH_DMA_GET_PAGE_SHIFT 1 +static inline unsigned long dma_get_page_shift(struct device *dev) +{ + return IOMMU_PAGE_SHIFT; +} + #include <asm-generic/dma-mapping-common.h> #endif
On sparc, the kernel's page size differs from the IOMMU's page size, so override the generic implementation, which always returns the kernel's page size, and return IOMMU_PAGE_SHIFT instead. Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com> --- I know very little about sparc, so please correct me if this patch is invalid. arch/sparc/include/asm/dma-mapping.h | 8 ++++++++ 1 file changed, 8 insertions(+)