On 2023-03-15 19:21, Desnes Nunes wrote:
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@xxxxxxxxxx>
---
kernel/dma/debug.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c
index 18c93c2276ca..e0ad8db1ec25 100644
--- a/kernel/dma/debug.c
+++ b/kernel/dma/debug.c
@@ -52,7 +52,8 @@ 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: pointer to the device driver
The original comment was correct...
+ * @dev_addr: 'dev' argument to dma_map_{page|single|sg} or dma_alloc_coherent
...and the address is clearly not the argument representing the device,
since it is an address :/
Thanks,
Robin.
* @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,
};
