From: Kristoffer Glembo <kristoffer@xxxxxxxxxxx>
Date: Mon, 16 Nov 2009 10:51:07 +0100
> @@ -524,7 +536,16 @@ static dma_addr_t pci32_map_page(struct device *dev, struct page *page,
> struct dma_attrs *attrs)
> {
> /* IIep is write-through, not flushing. */
> - return page_to_phys(page) + offset;
> + return virt_to_phys(page_address(page)) + offset;
> +}
What's wrong with page_to_phys()?
page_to_phys() is what must be used, because it is legal to DMA to or
from a highmem page, and for those page_address(page) does not
necessaily evaluate fully.
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