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sparc: use generic dma_noncoherent_ops

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Switch to the generic noncoherent direct mapping implementation.

This removes the previous sync_single_for_device implementation, which
looks bogus given that no syncing is happening in the similar but more
important map_single case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2018-07-31 10:02:04 +02:00
committed by David S. Miller
parent 778a33959a
commit dfaad39cec
3 changed files with 36 additions and 166 deletions
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5
arch/sparc/include/asm/dma-mapping.h
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@@ -7,7 +7,6 @@
#include <linux/dma-debug.h>
extern const struct dma_map_ops *dma_ops;
extern const struct dma_map_ops pci32_dma_ops;
extern struct bus_type pci_bus_type;
@@ -15,11 +14,11 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
#ifdef CONFIG_SPARC_LEON
if (sparc_cpu_model == sparc_leon)
return &pci32_dma_ops;
return &dma_noncoherent_ops;
#endif
#if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
if (bus == &pci_bus_type)
return &pci32_dma_ops;
return &dma_noncoherent_ops;
#endif
return dma_ops;
}