440 	unsigned long pfn, start_pfn, prev_pfn;  in vb2_dc_get_user_pfn()  local
447 	ret = follow_pfn(vma, start, &pfn);  in vb2_dc_get_user_pfn()
451 	start_pfn = pfn;  in vb2_dc_get_user_pfn()
455 		prev_pfn = pfn;  in vb2_dc_get_user_pfn()
456 		ret = follow_pfn(vma, start, &pfn);  in vb2_dc_get_user_pfn()
462 		if (pfn != prev_pfn + 1)  in vb2_dc_get_user_pfn()
478 			unsigned long pfn;  in vb2_dc_get_user_pages()  local
479 			int ret = follow_pfn(vma, start, &pfn);  in vb2_dc_get_user_pages()
481 			if (!pfn_valid(pfn))  in vb2_dc_get_user_pages()
488 			pages[i] = pfn_to_page(pfn);  in vb2_dc_get_user_pages()
548 static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn)  in vb2_dc_pfn_to_dma()  argument
550 	return (dma_addr_t)__arch_pfn_to_dma(dev, pfn);  in vb2_dc_pfn_to_dma()
553 static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn)  in vb2_dc_pfn_to_dma()  argument
555 	return (dma_addr_t)__pfn_to_bus(pfn);  in vb2_dc_pfn_to_dma()
558 static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn)  in vb2_dc_pfn_to_dma()  argument
560 	return (dma_addr_t)__pfn_to_phys(pfn);  in vb2_dc_pfn_to_dma()
563 static inline dma_addr_t vb2_dc_pfn_to_dma(struct device *dev, unsigned long pfn)  in vb2_dc_pfn_to_dma()  argument
566 	return (dma_addr_t)(pfn) << PAGE_SHIFT;  in vb2_dc_pfn_to_dma()
643 		unsigned long pfn;  in vb2_dc_get_userptr()  local
644 		if (vb2_dc_get_user_pfn(start, n_pages, vma, &pfn) == 0) {  in vb2_dc_get_userptr()
645 			buf->dma_addr = vb2_dc_pfn_to_dma(buf->dev, pfn);  in vb2_dc_get_userptr()