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| author | Christoph Hellwig <hch@lst.de> | 2019-11-12 17:06:04 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-11-20 20:31:40 +0100 |
| commit | 130c1ccbf55330b55e82612a6e54eebb82c9d746 (patch) | |
| tree | d61b03639384aa3357871b756082ff6966dcbf38 /arch/arm/include | |
| parent | 56e35f9c5b87ec1ae93e483284e189c84388de16 (diff) | |
| download | linux-130c1ccbf55330b55e82612a6e54eebb82c9d746.tar.bz2 | |
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 <hch@lst.de>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/dma-direct.h | 19 |
1 files changed, 0 insertions, 19 deletions
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 */ |