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dma-mapping, powerpc: simplify the arch dma_set_mask override

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Instead of letting the architecture supply all of dma_set_mask just
give it an additional hook selected by Kconfig.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christoph Hellwig
2019-02-13 08:01:22 +01:00
committed by Michael Ellerman
parent 9b18114c0b
commit 11ddce1545
9 changed files with 26 additions and 24 deletions
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8
arch/powerpc/sysdev/fsl_pci.c
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@@ -133,11 +133,8 @@ static void setup_swiotlb_ops(struct pci_controller *hose)
static inline void setup_swiotlb_ops(struct pci_controller *hose) {}
#endif
static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
static void fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
/*
* Fix up PCI devices that are able to DMA to the large inbound
* mapping that allows addressing any RAM address from across PCI.
@@ -147,9 +144,6 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
set_dma_ops(dev, &dma_nommu_ops);
set_dma_offset(dev, pci64_dma_offset);
}
*dev->dma_mask = dma_mask;
return 0;
}
static int setup_one_atmu(struct ccsr_pci __iomem *pci,