@@ -3,7 +3,6 @@ config M68K
bool
default y
select ARCH_32BIT_OFF_T
- select ARCH_DMA_ALLOC if !MMU || COLDFIRE
select ARCH_HAS_BINFMT_FLAT
select ARCH_HAS_CPU_FINALIZE_INIT if MMU
select ARCH_HAS_CURRENT_STACK_POINTER
@@ -33,29 +33,6 @@ pgprot_t pgprot_dmacoherent(pgprot_t prot)
}
return prot;
}
-#else
-void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
- gfp_t gfp, unsigned long attrs)
-{
- void *ret;
-
- if (dev == NULL || (*dev->dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
- ret = (void *)__get_free_pages(gfp, get_order(size));
-
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = virt_to_phys(ret);
- }
- return ret;
-}
-
-void arch_dma_free(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
-{
- free_pages((unsigned long)vaddr, get_order(size));
-}
-
#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */
void arch_sync_dma_for_device(phys_addr_t handle, size_t size,
m68knommu and coldfire can't provide coherent DMA allocations at all. Currently they simply return normal kernel memory from dma_alloc_coherent, which is broken and breaks the API contract. Now that the only DMA capable driver on these systems has been switched to use explicitly non-coherent allocations we can drop this hack and return NULL from dma_alloc_coherent. Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/m68k/Kconfig | 1 - arch/m68k/kernel/dma.c | 23 ----------------------- 2 files changed, 24 deletions(-)