dma-debug: small dma_debug_entry's comment and variable name updates

Small update on dma_debug_entry's struct commentary and also standardize
the usage of 'dma_addr' variable name from debug_dma_map_page() on
debug_dma_unmap_page(), and similarly on debug_dma_free_coherent()

Signed-off-by: Desnes Nunes <desnesn@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c
index 18c93c2..9aa5100 100644 (file)
--- a/kernel/dma/debug.c
+++ b/kernel/dma/debug.c
@@ -53,6 +53,7 @@ enum map_err_types {
  * struct dma_debug_entry - track a dma_map* or dma_alloc_coherent mapping
  * @list: node on pre-allocated free_entries list
  * @dev: 'dev' argument to dma_map_{page|single|sg} or dma_alloc_coherent
+ * @dev_addr: dma address
  * @size: length of the mapping
  * @type: single, page, sg, coherent
  * @direction: enum dma_data_direction
@@ -1262,13 +1263,13 @@ void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 }
 EXPORT_SYMBOL(debug_dma_mapping_error);
 
-void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
+void debug_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
                          size_t size, int direction)
 {
        struct dma_debug_entry ref = {
                .type           = dma_debug_single,
                .dev            = dev,
-               .dev_addr       = addr,
+               .dev_addr       = dma_addr,
                .size           = size,
                .direction      = direction,
        };
@@ -1403,13 +1404,13 @@ void debug_dma_alloc_coherent(struct device *dev, size_t size,
 }
 
 void debug_dma_free_coherent(struct device *dev, size_t size,
-                        void *virt, dma_addr_t addr)
+                        void *virt, dma_addr_t dma_addr)
 {
        struct dma_debug_entry ref = {
                .type           = dma_debug_coherent,
                .dev            = dev,
                .offset         = offset_in_page(virt),
-               .dev_addr       = addr,
+               .dev_addr       = dma_addr,
                .size           = size,
                .direction      = DMA_BIDIRECTIONAL,
        };