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>
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index 546e697..bed56f1 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -225,7 +225,7 @@
if (!plat_device_is_coherent(dev) && direction != DMA_TO_DEVICE) {
unsigned long addr;
- addr = plat_dma_addr_to_phys(dma_address);
+ addr = dma_addr_to_virt(dma_address);
dma_cache_wback_inv(addr, size);
}
