swiotlb: remove unnecessary swiotlb_bus_to_virt

swiotlb_bus_to_virt is unncessary; we can use swiotlb_bus_to_phys and
phys_to_virt instead.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Becky Bruce <beckyb@kernel.crashing.org>

1 files changed, 0 insertions, 10 deletions

diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index 68ccf11e4f19..41534ae2f589 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -24,16 +24,6 @@
 int swiotlb __read_mostly;
 unsigned int ppc_swiotlb_enable;
 
-void *swiotlb_bus_to_virt(struct device *hwdev, dma_addr_t addr)
-{
-        unsigned long pfn = PFN_DOWN(swiotlb_bus_to_phys(hwdev, addr));
-        void *pageaddr = page_address(pfn_to_page(pfn));
-
-        if (pageaddr != NULL)
-                return pageaddr + (addr % PAGE_SIZE);
-        return NULL;
-}
-
 dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
 {
         return paddr + get_dma_direct_offset(hwdev);