linux-kernel - Re: [PATCH v2 2/2] soc: qcom: pmic_glink: notify clients about the current state

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Date: Fri, 5 Apr 2024 22:22:07 +0530
From: Mukesh Ojha <quic_mojha@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Neil
 Armstrong <neil.armstrong@...aro.org>
CC: <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew
 Halaney <ahalaney@...hat.com>
Subject: Re: [PATCH v2 2/2] soc: qcom: pmic_glink: notify clients about the
 current state



On 4/3/2024 8:40 AM, Dmitry Baryshkov wrote:
> In case the client is registered after the pmic-glink recived a response

                                                         received

> from the Protection Domain mapper, it is going to miss the notification
> about the state. Notify clients about the current state upon
> registration.
> 
> Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
> Reviewed-by: Andrew Halaney <ahalaney@...hat.com>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>   drivers/soc/qcom/pmic_glink.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
> index 2b2cdf479654..e85a12ec2aab 100644
> --- a/drivers/soc/qcom/pmic_glink.c
> +++ b/drivers/soc/qcom/pmic_glink.c
> @@ -83,9 +83,14 @@ struct pmic_glink_client *devm_pmic_glink_register_client(struct device *dev,
>   	client->pdr_notify = pdr;
>   	client->priv = priv;
>   
> +	mutex_lock(&pg->state_lock);
>   	mutex_lock(&pg->client_lock);
> +
>   	list_add(&client->node, &pg->clients);
> +	client->pdr_notify(client->priv, pg->client_state);
> +
>   	mutex_unlock(&pg->client_lock);
> +	mutex_unlock(&pg->state_lock);

LGTM,

Reviewed-by: Mukesh Ojha <quic_mojha@...cinc.com>

-Mukesh
>   
>   	devres_add(dev, client);
>   
>