diff options
Diffstat (limited to 'drivers/media/common')
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-dma-contig.c | 41 |
1 files changed, 9 insertions, 32 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-dma-contig.c b/drivers/media/common/videobuf2/videobuf2-dma-contig.c index aff0ab7bf83d..82389aead6ed 100644 --- a/drivers/media/common/videobuf2/videobuf2-dma-contig.c +++ b/drivers/media/common/videobuf2/videobuf2-dma-contig.c @@ -439,42 +439,14 @@ static void vb2_dc_put_userptr(void *buf_priv) set_page_dirty_lock(pages[i]); sg_free_table(sgt); kfree(sgt); + } else { + dma_unmap_resource(buf->dev, buf->dma_addr, buf->size, + buf->dma_dir, 0); } vb2_destroy_framevec(buf->vec); kfree(buf); } -/* - * For some kind of reserved memory there might be no struct page available, - * so all that can be done to support such 'pages' is to try to convert - * pfn to dma address or at the last resort just assume that - * dma address == physical address (like it has been assumed in earlier version - * of videobuf2-dma-contig - */ - -#ifdef __arch_pfn_to_dma -static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn) -{ - return (dma_addr_t)__arch_pfn_to_dma(dev, pfn); -} -#elif defined(__pfn_to_bus) -static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn) -{ - return (dma_addr_t)__pfn_to_bus(pfn); -} -#elif defined(__pfn_to_phys) -static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn) -{ - return (dma_addr_t)__pfn_to_phys(pfn); -} -#else -static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn) -{ - /* really, we cannot do anything better at this point */ - return (dma_addr_t)(pfn) << PAGE_SHIFT; -} -#endif - static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr, unsigned long size, enum dma_data_direction dma_dir) { @@ -528,7 +500,12 @@ static void *vb2_dc_get_userptr(struct device *dev, unsigned long vaddr, for (i = 1; i < n_pages; i++) if (nums[i-1] + 1 != nums[i]) goto fail_pfnvec; - buf->dma_addr = vb2_dc_pfn_to_dma(buf->dev, nums[0]); + buf->dma_addr = dma_map_resource(buf->dev, + __pfn_to_phys(nums[0]), size, buf->dma_dir, 0); + if (dma_mapping_error(buf->dev, buf->dma_addr)) { + ret = -ENOMEM; + goto fail_pfnvec; + } goto out; } |