From 130c1ccbf55330b55e82612a6e54eebb82c9d746 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 12 Nov 2019 17:06:04 +0100 Subject: dma-direct: unify the dma_capable definitions Currently each architectures that wants to override dma_to_phys and phys_to_dma also has to provide dma_capable. But there isn't really any good reason for that. powerpc and mips just have copies of the generic one minus the latests fix, and the arm one was the inspiration for said fix, but misses the bus_dma_mask handling. Make all architectures use the generic version instead. Signed-off-by: Christoph Hellwig Acked-by: Michael Ellerman (powerpc) Reviewed-by: Nicolas Saenz Julienne --- arch/arm/include/asm/dma-direct.h | 19 ------------------- 1 file changed, 19 deletions(-) (limited to 'arch/arm/include/asm') diff --git a/arch/arm/include/asm/dma-direct.h b/arch/arm/include/asm/dma-direct.h index b67e5fc1fe43..7c3001a6a775 100644 --- a/arch/arm/include/asm/dma-direct.h +++ b/arch/arm/include/asm/dma-direct.h @@ -14,23 +14,4 @@ static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr) return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset; } -static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) -{ - u64 limit, mask; - - if (!dev->dma_mask) - return 0; - - mask = *dev->dma_mask; - - limit = (mask + 1) & ~mask; - if (limit && size > limit) - return 0; - - if ((addr | (addr + size - 1)) & ~mask) - return 0; - - return 1; -} - #endif /* ASM_ARM_DMA_DIRECT_H */ -- cgit v1.2.3