rpmsg: core: Drop dev_pm_domain_detach() call

[PATCH] rpmsg: core: Drop dev_pm_domain_detach() call

Posted by Claudiu 5 months, 2 weeks ago

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Starting with commit f99508074e78 ("PM: domains: Detach on
device_unbind_cleanup()"), there is no longer a need to call
dev_pm_domain_detach() in the bus remove function. The
device_unbind_cleanup() function now handles this to avoid
invoking devres cleanup handlers while the PM domain is
powered off, which could otherwise lead to failures as
described in the above-mentioned commit.

Drop the explicit dev_pm_domain_detach() call and rely instead
on the flags passed to dev_pm_domain_attach() to power off the
domain.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
 drivers/rpmsg/rpmsg_core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index bece5e635ee9..5d661681a9b6 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -479,7 +479,8 @@ static int rpmsg_dev_probe(struct device *dev)
 	struct rpmsg_endpoint *ept = NULL;
 	int err;
 
-	err = dev_pm_domain_attach(dev, PD_FLAG_ATTACH_POWER_ON);
+	err = dev_pm_domain_attach(dev, PD_FLAG_ATTACH_POWER_ON |
+					PD_FLAG_DETACH_POWER_OFF);
 	if (err)
 		goto out;
 
@@ -538,8 +539,6 @@ static void rpmsg_dev_remove(struct device *dev)
 	if (rpdrv->remove)
 		rpdrv->remove(rpdev);
 
-	dev_pm_domain_detach(dev, true);
-
 	if (rpdev->ept)
 		rpmsg_destroy_ept(rpdev->ept);
 }
-- 
2.43.0

Re: [PATCH] rpmsg: core: Drop dev_pm_domain_detach() call

Posted by Mathieu Poirier 5 months, 1 week ago

On Wed, Aug 27, 2025 at 01:13:52PM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Starting with commit f99508074e78 ("PM: domains: Detach on
> device_unbind_cleanup()"), there is no longer a need to call
> dev_pm_domain_detach() in the bus remove function. The
> device_unbind_cleanup() function now handles this to avoid
> invoking devres cleanup handlers while the PM domain is
> powered off, which could otherwise lead to failures as
> described in the above-mentioned commit.
> 
> Drop the explicit dev_pm_domain_detach() call and rely instead
> on the flags passed to dev_pm_domain_attach() to power off the
> domain.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>  drivers/rpmsg/rpmsg_core.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>

Applied.

Thanks,
Mathieu
 
> diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
> index bece5e635ee9..5d661681a9b6 100644
> --- a/drivers/rpmsg/rpmsg_core.c
> +++ b/drivers/rpmsg/rpmsg_core.c
> @@ -479,7 +479,8 @@ static int rpmsg_dev_probe(struct device *dev)
>  	struct rpmsg_endpoint *ept = NULL;
>  	int err;
>  
> -	err = dev_pm_domain_attach(dev, PD_FLAG_ATTACH_POWER_ON);
> +	err = dev_pm_domain_attach(dev, PD_FLAG_ATTACH_POWER_ON |
> +					PD_FLAG_DETACH_POWER_OFF);
>  	if (err)
>  		goto out;
>  
> @@ -538,8 +539,6 @@ static void rpmsg_dev_remove(struct device *dev)
>  	if (rpdrv->remove)
>  		rpdrv->remove(rpdev);
>  
> -	dev_pm_domain_detach(dev, true);
> -
>  	if (rpdev->ept)
>  		rpmsg_destroy_ept(rpdev->ept);
>  }
> -- 
> 2.43.0
>

Re: [PATCH] rpmsg: core: Drop dev_pm_domain_detach() call

Posted by Ulf Hansson 5 months, 2 weeks ago

On Wed, 27 Aug 2025 at 12:13, Claudiu <claudiu.beznea@tuxon.dev> wrote:
>
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Starting with commit f99508074e78 ("PM: domains: Detach on
> device_unbind_cleanup()"), there is no longer a need to call
> dev_pm_domain_detach() in the bus remove function. The
> device_unbind_cleanup() function now handles this to avoid
> invoking devres cleanup handlers while the PM domain is
> powered off, which could otherwise lead to failures as
> described in the above-mentioned commit.
>
> Drop the explicit dev_pm_domain_detach() call and rely instead
> on the flags passed to dev_pm_domain_attach() to power off the
> domain.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>

Kind regards
Uffe


> ---
>  drivers/rpmsg/rpmsg_core.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
> index bece5e635ee9..5d661681a9b6 100644
> --- a/drivers/rpmsg/rpmsg_core.c
> +++ b/drivers/rpmsg/rpmsg_core.c
> @@ -479,7 +479,8 @@ static int rpmsg_dev_probe(struct device *dev)
>         struct rpmsg_endpoint *ept = NULL;
>         int err;
>
> -       err = dev_pm_domain_attach(dev, PD_FLAG_ATTACH_POWER_ON);
> +       err = dev_pm_domain_attach(dev, PD_FLAG_ATTACH_POWER_ON |
> +                                       PD_FLAG_DETACH_POWER_OFF);
>         if (err)
>                 goto out;
>
> @@ -538,8 +539,6 @@ static void rpmsg_dev_remove(struct device *dev)
>         if (rpdrv->remove)
>                 rpdrv->remove(rpdev);
>
> -       dev_pm_domain_detach(dev, true);
> -
>         if (rpdev->ept)
>                 rpmsg_destroy_ept(rpdev->ept);
>  }
> --
> 2.43.0
>