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[3/3] soc: qcom: pmic_glink: Actually communicate with remote goes down

Message ID 20240818-pmic-glink-v6-11-races-v1-3-f87c577e0bc9@quicinc.com
State Superseded
Headers show
Series soc: qcom: pmic_glink: v6.11-rc bug fixes | expand

Commit Message

Bjorn Andersson Aug. 18, 2024, 11:17 p.m. UTC 
When the pmic_glink state is UP and we either receive a protection-
domain (PD) notifcation indicating that the PD is going down, or that
the whole remoteproc is going down, it's expected that the pmic_glink
client instances are notified that their function has gone DOWN.

This is not what the code does, which results in the client state either
not updating, or being wrong in many cases. So let's fix the conditions.

Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
Cc: stable@vger.kernel.org
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
---
 drivers/soc/qcom/pmic_glink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Dmitry Baryshkov Aug. 19, 2024, 1:09 a.m. UTC | #1 
On 19 August 2024 06:17:39 GMT+07:00, Bjorn Andersson <quic_bjorande@quicinc.com> wrote:
>When the pmic_glink state is UP and we either receive a protection-
>domain (PD) notifcation indicating that the PD is going down, or that
>the whole remoteproc is going down, it's expected that the pmic_glink
>client instances are notified that their function has gone DOWN.
>
>This is not what the code does, which results in the client state either
>not updating, or being wrong in many cases. So let's fix the conditions.
>
>Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
>Cc: stable@vger.kernel.org
>Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
>---
> drivers/soc/qcom/pmic_glink.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Neil Armstrong Aug. 19, 2024, 9:16 a.m. UTC | #2 
On 19/08/2024 01:17, Bjorn Andersson wrote:
> When the pmic_glink state is UP and we either receive a protection-
> domain (PD) notifcation indicating that the PD is going down, or that
> the whole remoteproc is going down, it's expected that the pmic_glink
> client instances are notified that their function has gone DOWN.
> 
> This is not what the code does, which results in the client state either
> not updating, or being wrong in many cases. So let's fix the conditions.
> 
> Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
> Cc: stable@vger.kernel.org
> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> ---
>   drivers/soc/qcom/pmic_glink.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
> index e4747f1d3da5..cb202a37e8ab 100644
> --- a/drivers/soc/qcom/pmic_glink.c
> +++ b/drivers/soc/qcom/pmic_glink.c
> @@ -191,7 +191,7 @@ static void pmic_glink_state_notify_clients(struct pmic_glink *pg)
>   		if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
>   			new_state = SERVREG_SERVICE_STATE_UP;
>   	} else {
> -		if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
> +		if (pg->pdr_state == SERVREG_SERVICE_STATE_DOWN || !pg->ept)
>   			new_state = SERVREG_SERVICE_STATE_DOWN;
>   	}
>   
> 

Good catch!

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Heikki Krogerus Aug. 19, 2024, 1:33 p.m. UTC | #3 
On Sun, Aug 18, 2024 at 04:17:39PM -0700, Bjorn Andersson wrote:
> When the pmic_glink state is UP and we either receive a protection-
> domain (PD) notifcation indicating that the PD is going down, or that
> the whole remoteproc is going down, it's expected that the pmic_glink
> client instances are notified that their function has gone DOWN.
> 
> This is not what the code does, which results in the client state either
> not updating, or being wrong in many cases. So let's fix the conditions.
> 
> Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
> Cc: stable@vger.kernel.org
> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>

> ---
>  drivers/soc/qcom/pmic_glink.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
> index e4747f1d3da5..cb202a37e8ab 100644
> --- a/drivers/soc/qcom/pmic_glink.c
> +++ b/drivers/soc/qcom/pmic_glink.c
> @@ -191,7 +191,7 @@ static void pmic_glink_state_notify_clients(struct pmic_glink *pg)
>  		if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
>  			new_state = SERVREG_SERVICE_STATE_UP;
>  	} else {
> -		if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
> +		if (pg->pdr_state == SERVREG_SERVICE_STATE_DOWN || !pg->ept)
>  			new_state = SERVREG_SERVICE_STATE_DOWN;
>  	}
>  
>
diff mbox series

Patch

diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
index e4747f1d3da5..cb202a37e8ab 100644
--- a/drivers/soc/qcom/pmic_glink.c
+++ b/drivers/soc/qcom/pmic_glink.c
@@ -191,7 +191,7 @@  static void pmic_glink_state_notify_clients(struct pmic_glink *pg)
 		if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
 			new_state = SERVREG_SERVICE_STATE_UP;
 	} else {
-		if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept)
+		if (pg->pdr_state == SERVREG_SERVICE_STATE_DOWN || !pg->ept)
 			new_state = SERVREG_SERVICE_STATE_DOWN;
 	}