diff options
Diffstat (limited to 'arch/avr32/mm/dma-coherent.c')
| -rw-r--r-- | arch/avr32/mm/dma-coherent.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-coherent.c index 099212d4567..50cdb5b10f0 100644 --- a/arch/avr32/mm/dma-coherent.c +++ b/arch/avr32/mm/dma-coherent.c @@ -7,6 +7,8 @@ */ #include <linux/dma-mapping.h> +#include <linux/gfp.h> +#include <linux/export.h> #include <asm/addrspace.h> #include <asm/cacheflush.h> @@ -21,13 +23,13 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size, int direction) switch (direction) { case DMA_FROM_DEVICE: /* invalidate only */ - dma_cache_inv(vaddr, size); + invalidate_dcache_region(vaddr, size); break; case DMA_TO_DEVICE: /* writeback only */ - dma_cache_wback(vaddr, size); + clean_dcache_region(vaddr, size); break; case DMA_BIDIRECTIONAL: /* writeback and invalidate */ - dma_cache_wback_inv(vaddr, size); + flush_dcache_region(vaddr, size); break; default: BUG(); @@ -41,6 +43,13 @@ static struct page *__dma_alloc(struct device *dev, size_t size, struct page *page, *free, *end; int order; + /* Following is a work-around (a.k.a. hack) to prevent pages + * with __GFP_COMP being passed to split_page() which cannot + * handle them. The real problem is that this flag probably + * should be 0 on AVR32 as it is not supported on this + * platform--see CONFIG_HUGETLB_PAGE. */ + gfp &= ~(__GFP_COMP); + size = PAGE_ALIGN(size); order = get_order(size); |