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[PATCH v2 3/5] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id

Alireza Sanaee posted 5 patches 3 months ago
There is a newer version of this series
[PATCH v2 3/5] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id
Posted by Alireza Sanaee 3 months ago 
Use the newly created API to grab CPU id.

Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
---
 .../hwtracing/coresight/coresight-cti-platform.c   | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
index d0ae10bf6128..e1dc559d54aa 100644
--- a/drivers/hwtracing/coresight/coresight-cti-platform.c
+++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
@@ -41,20 +41,8 @@
  */
 static int of_cti_get_cpu_at_node(const struct device_node *node)
 {
-	int cpu;
-	struct device_node *dn;
+	int cpu = of_cpu_phandle_to_id(node, NULL, 0);
 
-	if (node == NULL)
-		return -1;
-
-	dn = of_parse_phandle(node, "cpu", 0);
-	/* CTI affinity defaults to no cpu */
-	if (!dn)
-		return -1;
-	cpu = of_cpu_node_to_id(dn);
-	of_node_put(dn);
-
-	/* No Affinity  if no cpu nodes are found */
 	return (cpu < 0) ? -1 : cpu;
 }
 
-- 
2.43.0
Re: [PATCH v2 3/5] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id
Posted by Mike Leach 2 months, 4 weeks ago 
Hi,

On Tue, 8 Jul 2025 at 16:16, Alireza Sanaee <alireza.sanaee@huawei.com> wrote:
>
> Use the newly created API to grab CPU id.
>
> Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
> ---
>  .../hwtracing/coresight/coresight-cti-platform.c   | 14 +-------------
>  1 file changed, 1 insertion(+), 13 deletions(-)
>
> diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
> index d0ae10bf6128..e1dc559d54aa 100644
> --- a/drivers/hwtracing/coresight/coresight-cti-platform.c
> +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
> @@ -41,20 +41,8 @@
>   */
>  static int of_cti_get_cpu_at_node(const struct device_node *node)
>  {
> -       int cpu;
> -       struct device_node *dn;
> +       int cpu = of_cpu_phandle_to_id(node, NULL, 0);
>
> -       if (node == NULL)
> -               return -1;
> -
> -       dn = of_parse_phandle(node, "cpu", 0);
> -       /* CTI affinity defaults to no cpu */
> -       if (!dn)
> -               return -1;
> -       cpu = of_cpu_node_to_id(dn);
> -       of_node_put(dn);
> -
> -       /* No Affinity  if no cpu nodes are found */

Leave the above comment in place.

>         return (cpu < 0) ? -1 : cpu;
>  }
>
> --
> 2.43.0
>

With that

Reviewed-by: Mike Leach <mike.leach@linro.org>
-- 
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK
Re: [PATCH v2 3/5] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id
Posted by Jonathan Cameron 2 months, 4 weeks ago 
On Fri, 11 Jul 2025 16:55:15 +0100
Mike Leach <mike.leach@linaro.org> wrote:

> Hi,
> 
> On Tue, 8 Jul 2025 at 16:16, Alireza Sanaee <alireza.sanaee@huawei.com> wrote:
> >
> > Use the newly created API to grab CPU id.
> >
> > Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
> > ---
> >  .../hwtracing/coresight/coresight-cti-platform.c   | 14 +-------------
> >  1 file changed, 1 insertion(+), 13 deletions(-)
> >
> > diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
> > index d0ae10bf6128..e1dc559d54aa 100644
> > --- a/drivers/hwtracing/coresight/coresight-cti-platform.c
> > +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
> > @@ -41,20 +41,8 @@
> >   */
> >  static int of_cti_get_cpu_at_node(const struct device_node *node)
> >  {
> > -       int cpu;
> > -       struct device_node *dn;
> > +       int cpu = of_cpu_phandle_to_id(node, NULL, 0);
> >
> > -       if (node == NULL)
> > -               return -1;
> > -
> > -       dn = of_parse_phandle(node, "cpu", 0);
> > -       /* CTI affinity defaults to no cpu */
> > -       if (!dn)
> > -               return -1;
> > -       cpu = of_cpu_node_to_id(dn);
> > -       of_node_put(dn);
> > -
> > -       /* No Affinity  if no cpu nodes are found */  
> 
> Leave the above comment in place.
> 
> >         return (cpu < 0) ? -1 : cpu;
> >  }
> >
> > --
> > 2.43.0
> >  
> 
> With that
> 
> Reviewed-by: Mike Leach <mike.leach@linro.org>
Just in case Ali doesn't notice - typo in your address Mike!
(usually it is me who manages that ;)
Re: [PATCH v2 3/5] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id
Posted by Jonathan Cameron 2 months, 4 weeks ago 
On Tue, 8 Jul 2025 16:15:00 +0100
Alireza Sanaee <alireza.sanaee@huawei.com> wrote:

> Use the newly created API to grab CPU id.
> 
> Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
> ---
>  .../hwtracing/coresight/coresight-cti-platform.c   | 14 +-------------
>  1 file changed, 1 insertion(+), 13 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
> index d0ae10bf6128..e1dc559d54aa 100644
> --- a/drivers/hwtracing/coresight/coresight-cti-platform.c
> +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
> @@ -41,20 +41,8 @@
>   */
>  static int of_cti_get_cpu_at_node(const struct device_node *node)
>  {
> -	int cpu;
> -	struct device_node *dn;
> +	int cpu = of_cpu_phandle_to_id(node, NULL, 0);

Could do a single line - kind of down to coresight maintainers preference though!

	return (of_cpu_phandle_to_id(node, NULL, 0) < 0) ? -1; cpu;

+CC Suzuki (you got the two reviewers in the +CC but not the maintainer)


>  
> -	if (node == NULL)
> -		return -1;
> -
> -	dn = of_parse_phandle(node, "cpu", 0);
> -	/* CTI affinity defaults to no cpu */
> -	if (!dn)
> -		return -1;
> -	cpu = of_cpu_node_to_id(dn);
> -	of_node_put(dn);
> -
> -	/* No Affinity  if no cpu nodes are found */
>  	return (cpu < 0) ? -1 : cpu;
>  }
>

Patchew 2.1-devel-b67e4c2

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