[PATCH v2 09/11] swiotlb-xen: rename xen_phys_to_bus to xen_phys_to_dma and xen_bus_to_phys to xen_dma_to_phys

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

so that their names can better describe their behavior.

No functional changes.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
---
 drivers/xen/swiotlb-xen.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 60ef07440905..41129c02d59a 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -57,7 +57,7 @@ static unsigned long xen_io_tlb_nslabs;
  * can be 32bit when dma_addr_t is 64bit leading to a loss in
  * information if the shift is done before casting to 64bit.
  */
-static inline dma_addr_t xen_phys_to_bus(struct device *dev, phys_addr_t paddr)
+static inline dma_addr_t xen_phys_to_dma(struct device *dev, phys_addr_t paddr)
 {
        unsigned long bfn = pfn_to_bfn(XEN_PFN_DOWN(paddr));
        dma_addr_t dma = (dma_addr_t)bfn << XEN_PAGE_SHIFT;
@@ -67,7 +67,7 @@ static inline dma_addr_t xen_phys_to_bus(struct device *dev, 
phys_addr_t paddr)
        return phys_to_dma(dev, dma);
 }
 
-static inline phys_addr_t xen_bus_to_phys(struct device *dev,
+static inline phys_addr_t xen_dma_to_phys(struct device *dev,
                                          dma_addr_t dma_addr)
 {
        phys_addr_t baddr = dma_to_phys(dev, dma_addr);
@@ -80,7 +80,7 @@ static inline phys_addr_t xen_bus_to_phys(struct device *dev,
 
 static inline dma_addr_t xen_virt_to_bus(struct device *dev, void *address)
 {
-       return xen_phys_to_bus(dev, virt_to_phys(address));
+       return xen_phys_to_dma(dev, virt_to_phys(address));
 }
 
 static inline int range_straddles_page_boundary(phys_addr_t p, size_t size)
@@ -309,7 +309,7 @@ xen_swiotlb_alloc_coherent(struct device *hwdev, size_t 
size,
         * Do not use virt_to_phys(ret) because on ARM it doesn't correspond
         * to *dma_handle. */
        phys = dma_to_phys(hwdev, *dma_handle);
-       dev_addr = xen_phys_to_bus(hwdev, phys);
+       dev_addr = xen_phys_to_dma(hwdev, phys);
        if (((dev_addr + size - 1 <= dma_mask)) &&
            !range_straddles_page_boundary(phys, size))
                *dma_handle = dev_addr;
@@ -340,7 +340,7 @@ xen_swiotlb_free_coherent(struct device *hwdev, size_t 
size, void *vaddr,
 
        /* do not use virt_to_phys because on ARM it doesn't return you the
         * physical address */
-       phys = xen_bus_to_phys(hwdev, dev_addr);
+       phys = xen_dma_to_phys(hwdev, dev_addr);
 
        /* Convert the size to actually allocated. */
        size = 1UL << (order + XEN_PAGE_SHIFT);
@@ -369,7 +369,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, 
struct page *page,
                                unsigned long attrs)
 {
        phys_addr_t map, phys = page_to_phys(page) + offset;
-       dma_addr_t dev_addr = xen_phys_to_bus(dev, phys);
+       dma_addr_t dev_addr = xen_phys_to_dma(dev, phys);
 
        BUG_ON(dir == DMA_NONE);
        /*
@@ -394,7 +394,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, 
struct page *page,
                return DMA_MAPPING_ERROR;
 
        phys = map;
-       dev_addr = xen_phys_to_bus(dev, map);
+       dev_addr = xen_phys_to_dma(dev, map);
 
        /*
         * Ensure that the address returned is DMA'ble
@@ -422,7 +422,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, 
struct page *page,
 static void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
                size_t size, enum dma_data_direction dir, unsigned long attrs)
 {
-       phys_addr_t paddr = xen_bus_to_phys(hwdev, dev_addr);
+       phys_addr_t paddr = xen_dma_to_phys(hwdev, dev_addr);
 
        BUG_ON(dir == DMA_NONE);
 
@@ -438,7 +438,7 @@ static void
 xen_swiotlb_sync_single_for_cpu(struct device *dev, dma_addr_t dma_addr,
                size_t size, enum dma_data_direction dir)
 {
-       phys_addr_t paddr = xen_bus_to_phys(dev, dma_addr);
+       phys_addr_t paddr = xen_dma_to_phys(dev, dma_addr);
 
        if (!dev_is_dma_coherent(dev))
                xen_dma_sync_for_cpu(dev, dma_addr, paddr, size, dir);
@@ -451,7 +451,7 @@ static void
 xen_swiotlb_sync_single_for_device(struct device *dev, dma_addr_t dma_addr,
                size_t size, enum dma_data_direction dir)
 {
-       phys_addr_t paddr = xen_bus_to_phys(dev, dma_addr);
+       phys_addr_t paddr = xen_dma_to_phys(dev, dma_addr);
 
        if (is_xen_swiotlb_buffer(dev, dma_addr))
                swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_DEVICE);
-- 
2.17.1