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dma-direct: unify the dma_capable definitions

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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>
This commit is contained in:
Christoph Hellwig 2019-11-12 17:06:04 +01:00
parent 56e35f9c5b
commit 130c1ccbf5
4 changed files with 1 additions and 37 deletions
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2
include/linux/dma-direct.h
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@ -24,6 +24,7 @@ static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr)
return paddr + ((phys_addr_t)dev->dma_pfn_offset << PAGE_SHIFT);
}
#endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
@ -38,7 +39,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
return end <= min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
}
#endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */
#ifdef CONFIG_ARCH_HAS_FORCE_DMA_UNENCRYPTED
bool force_dma_unencrypted(struct device *dev);