diff mbox

[v6,5/8] coresight: use const for device_node structures

Message ID 1491485461-22800-6-git-send-email-leo.yan@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Leo Yan April 6, 2017, 1:30 p.m. UTC 
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.

Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 drivers/hwtracing/coresight/of_coresight.c | 6 +++---
 include/linux/coresight.h                  | 8 ++++----
 2 files changed, 7 insertions(+), 7 deletions(-)

Comments

Mathieu Poirier April 18, 2017, 3:24 p.m. UTC | #1 
On Thu, Apr 06, 2017 at 09:30:58PM +0800, 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.
> 
> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
> Signed-off-by: Leo Yan <leo.yan@linaro.org>

I agree with these changes but the patch needs to be split up - please see
below.

> ---
>  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)

Move this to a patch by itself as it is not related to this driver.

>  {
>  	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)

Move this to the previous patch in this set.  There is not need to undo what you
just did there.

>  {
>  	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)

Same here, move this to a new patch (the same one as of_coresight_get_ports()).

>  {
>  	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
>
Leo Yan April 18, 2017, 11:13 p.m. UTC | #2 
Hi Mathieu,

On Tue, Apr 18, 2017 at 09:24:47AM -0600, Mathieu Poirier wrote:
> On Thu, Apr 06, 2017 at 09:30:58PM +0800, 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.
> > 
> > Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
> > Signed-off-by: Leo Yan <leo.yan@linaro.org>
> 
> I agree with these changes but the patch needs to be split up - please see
> below.
> 
> > ---
> >  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)
> 
> Move this to a patch by itself as it is not related to this driver.
> 
> >  {
> >  	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)
> 
> Move this to the previous patch in this set.  There is not need to undo what you
> just did there.
> 
> >  {
> >  	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)
> 
> Same here, move this to a new patch (the same one as of_coresight_get_ports()).

Yeah, this is better than my form. Will change.

Thanks,
Leo Yan
diff mbox

Patch

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