diff options
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 19357f76ce89..3a8e527c774c 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -189,18 +189,24 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, struct page *page; struct arm_vmregion *c; - if (!consistent_pte[0]) { - printk(KERN_ERR "%s: not initialised\n", __func__); - dump_stack(); - return NULL; - } - size = PAGE_ALIGN(size); page = __dma_alloc_buffer(dev, size, gfp); if (!page) goto no_page; + if (arch_is_coherent()) { + *handle = page_to_dma(dev, page); + return page_address(page); + } + + if (!consistent_pte[0]) { + printk(KERN_ERR "%s: not initialised\n", __func__); + dump_stack(); + __dma_free_buffer(page, size); + return NULL; + } + /* * Allocate a virtual address in the consistent mapping region. */ @@ -342,19 +348,6 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gf if (dma_alloc_from_coherent(dev, size, handle, &memory)) return memory; - if (arch_is_coherent()) { - struct page *page; - - page = __dma_alloc_buffer(dev, PAGE_ALIGN(size), gfp); - if (!page) { - *handle = ~0; - return NULL; - } - - *handle = page_to_dma(dev, page); - return page_address(page); - } - return __dma_alloc(dev, size, handle, gfp, pgprot_noncached(pgprot_kernel)); } |