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MIPS: Fix oops in dma_unmap_page on not coherent mips platforms 

dma_cache_wback_inv() expects virtual address, but physical was provided
due to translation via plat_dma_addr_to_phys().
If replaced with dma_addr_to_virt(), page fault oops from dma_unmap_page()
is gone on au1550 platform.

Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com>
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Jan Nikitenko 2008-11-28 08:52:58 +01:00 committed by Ralf Baechle
parent d56ffd38a9
commit d700119836
1 changed files with 1 additions and 1 deletions
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2
arch/mips/mm/dma-default.c
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@ -225,7 +225,7 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) { if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) {
unsigned long addr; unsigned long addr;
addr = plat_dma_addr_to_phys(dma_address); addr = dma_addr_to_virt(dma_address);
dma_cache_wback_inv(addr, size); dma_cache_wback_inv(addr, size);
} }