Re: [PATCH v5 5/9] coresight: use const for device_node structures

[Stephen Boyd]

On 03/26, Leo Yan wrote:
> Almost low level functions from open firmware have used const to
> qualify device_node structures, so add const for device_node
> parameters in of_coresight related functions.
> 
> Signed-off-by: Leo Yan 
> ---

Reviewed-by: Stephen Boyd 

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[PATCH v5 5/9] coresight: use const for device_node structures

[Leo Yan]

Almost low level functions from open firmware have used const to
qualify device_node structures, so add const for device_node
parameters in of_coresight related functions.

Signed-off-by: Leo Yan 
---
 drivers/hwtracing/coresight/of_coresight.c | 6 +++---
 include/linux/coresight.h  | 8 
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/hwtracing/coresight/of_coresight.c 
b/drivers/hwtracing/coresight/of_coresight.c
index 78d2399..46eec0f 100644
--- a/drivers/hwtracing/coresight/of_coresight.c
+++ b/drivers/hwtracing/coresight/of_coresight.c
@@ -52,7 +52,7 @@ of_coresight_get_endpoint_device(struct device_node *endpoint)
   endpoint, of_dev_node_match);
 }
 
-static void of_coresight_get_ports(struct device_node *node,
+static void of_coresight_get_ports(const struct device_node *node,
   int *nr_inport, int *nr_outport)
 {
struct device_node *ep = NULL;
@@ -101,7 +101,7 @@ static int of_coresight_alloc_memory(struct device *dev,
return 0;
 }
 
-int of_coresight_get_cpu(struct device_node *node)
+int of_coresight_get_cpu(const struct device_node *node)
 {
int cpu;
bool found;
@@ -128,7 +128,7 @@ int of_coresight_get_cpu(struct device_node *node)
 EXPORT_SYMBOL_GPL(of_coresight_get_cpu);
 
 struct coresight_platform_data *of_get_coresight_platform_data(
-   struct device *dev, struct device_node *node)
+   struct device *dev, const struct device_node *node)
 {
int i = 0, ret = 0;
struct coresight_platform_data *pdata;
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index bf96678..4915254 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -263,13 +263,13 @@ static inline int coresight_timeout(void __iomem *addr, 
u32 offset,
 #endif
 
 #ifdef CONFIG_OF
-extern int of_coresight_get_cpu(struct device_node *node);
+extern int of_coresight_get_cpu(const struct device_node *node);
 extern struct coresight_platform_data *of_get_coresight_platform_data(
-   struct device *dev, struct device_node *node);
+   struct device *dev, const struct device_node *node);
 #else
-static inline int of_coresight_get_cpu(struct device_node *node) { return 0; }
+static inline int of_coresight_get_cpu(const struct device_node *node) { 
return 0; }
 static inline struct coresight_platform_data *of_get_coresight_platform_data(
-   struct device *dev, struct device_node *node) { return NULL; }
+   struct device *dev, const struct device_node *node) { return NULL; }
 #endif
 
 #ifdef CONFIG_PID_NS
-- 
2.7.4

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