swiotlb: search and replace "int dir" with "enum dma_data_direction dir"

.. to catch anybody doing something funky.

See "swiotlb: swiotlb: add swiotlb_tbl_map_single library function" for
full description of patchset.

[v2: swiotlb_sync_single_range_* no more - removed usage]
[v3: enum dma_data_direction direction -> enum dma_data_direction dir]

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Albert Herranz <albert_herranz@yahoo.es>

2 files changed, 15 insertions, 12 deletions

diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index b406261d8887..250d766f17f7 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -43,11 +43,11 @@ extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
 
 extern int
 swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
-               int direction);
+               enum dma_data_direction dir);
 
 extern void
 swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
-                 int direction);
+                 enum dma_data_direction dir);
 
 extern int
 swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 1fc15bf63945..5f60157f31d8 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -374,7 +374,8 @@ static void swiotlb_bounce(phys_addr_t phys, char *dma_addr, size_t size,
 }
 
 void *swiotlb_tbl_map_single(struct device *hwdev, dma_addr_t tbl_dma_addr,
-                             phys_addr_t phys, size_t size, int dir)
+                             phys_addr_t phys, size_t size,
+                             enum dma_data_direction dir)
 {
         unsigned long flags;
         char *dma_addr;
@@ -481,7 +482,8 @@ found:
  */
 
 static void *
-map_single(struct device *hwdev, phys_addr_t phys, size_t size, int dir)
+map_single(struct device *hwdev, phys_addr_t phys, size_t size,
+           enum dma_data_direction dir)
 {
         dma_addr_t start_dma_addr = swiotlb_virt_to_bus(hwdev, io_tlb_start);
 
@@ -493,7 +495,7 @@ map_single(struct device *hwdev, phys_addr_t phys, size_t size, int dir)
  */
 static void
 swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr, size_t size,
-                        int dir)
+                        enum dma_data_direction dir)
 {
         unsigned long flags;
         int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
@@ -534,7 +536,7 @@ swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr, size_t size,
 
 static void
 swiotlb_tbl_sync_single(struct device *hwdev, char *dma_addr, size_t size,
-            int dir, int target)
+            enum dma_data_direction dir, int target)
 {
         int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
         phys_addr_t phys = io_tlb_orig_addr[index];
@@ -624,7 +626,8 @@ swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
 EXPORT_SYMBOL(swiotlb_free_coherent);
 
 static void
-swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
+swiotlb_full(struct device *dev, size_t size, enum dma_data_direction dir,
+             int do_panic)
 {
         /*
          * Ran out of IOMMU space for this operation. This is very bad.
@@ -702,7 +705,7 @@ EXPORT_SYMBOL_GPL(swiotlb_map_page);
  * whatever the device wrote there.
  */
 static void unmap_single(struct device *hwdev, dma_addr_t dev_addr,
-                         size_t size, int dir)
+                         size_t size, enum dma_data_direction dir)
 {
         phys_addr_t paddr = dma_to_phys(hwdev, dev_addr);
 
@@ -745,7 +748,7 @@ EXPORT_SYMBOL_GPL(swiotlb_unmap_page);
  */
 static void
 swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
-                    size_t size, int dir, int target)
+                    size_t size, enum dma_data_direction dir, int target)
 {
         phys_addr_t paddr = dma_to_phys(hwdev, dev_addr);
 
@@ -832,7 +835,7 @@ EXPORT_SYMBOL(swiotlb_map_sg_attrs);
 
 int
 swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
-               int dir)
+               enum dma_data_direction dir)
 {
         return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
 }
@@ -859,7 +862,7 @@ EXPORT_SYMBOL(swiotlb_unmap_sg_attrs);
 
 void
 swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
-                 int dir)
+                 enum dma_data_direction dir)
 {
         return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
 }
@@ -874,7 +877,7 @@ EXPORT_SYMBOL(swiotlb_unmap_sg);
  */
 static void
 swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl,
-                int nelems, int dir, int target)
+                int nelems, enum dma_data_direction dir, int target)
 {
         struct scatterlist *sg;
         int i;