linux-kernel - Re: [PATCH 07/15] firmware: arm_scmi: Stash version in protocol init functions

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Date:   Wed, 11 Dec 2019 17:35:37 +0000
From:   Cristian Marussi <cristian.marussi@....com>
To:     Sudeep Holla <sudeep.holla@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/15] firmware: arm_scmi: Stash version in protocol init
 functions

On 10/12/2019 14:53, Sudeep Holla wrote:
> In order to avoid querying the individual protocol versions multiple
> time with more that one device created for each protocol, we can simple
> store the copy in the protocol specific private data and use them whenever
> required.
> 
> Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> ---
>  drivers/firmware/arm_scmi/clock.c   | 2 ++
>  drivers/firmware/arm_scmi/perf.c    | 2 ++
>  drivers/firmware/arm_scmi/power.c   | 2 ++
>  drivers/firmware/arm_scmi/reset.c   | 2 ++
>  drivers/firmware/arm_scmi/sensors.c | 2 ++
>  5 files changed, 10 insertions(+)
> 

LGTM.

Reviewed-by: Cristian Marussi <cristian.marussi@....com>


Cristian



> diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
> index 6c24eb8a4e68..b567ec03f711 100644
> --- a/drivers/firmware/arm_scmi/clock.c
> +++ b/drivers/firmware/arm_scmi/clock.c
> @@ -65,6 +65,7 @@ struct scmi_clock_set_rate {
>  };
> 
>  struct clock_info {
> +	u32 version;
>  	int num_clocks;
>  	int max_async_req;
>  	atomic_t cur_async_req;
> @@ -344,6 +345,7 @@ static int scmi_clock_protocol_init(struct scmi_device *dev)
>  			scmi_clock_describe_rates_get(handle, clkid, clk);
>  	}
> 
> +	cinfo->version = version;
>  	handle->clk_ops = &clk_ops;
>  	handle->clk_priv = cinfo;
> 
> diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
> index 4f02bfba98ba..b1de6197f61c 100644
> --- a/drivers/firmware/arm_scmi/perf.c
> +++ b/drivers/firmware/arm_scmi/perf.c
> @@ -145,6 +145,7 @@ struct perf_dom_info {
>  };
> 
>  struct scmi_perf_info {
> +	u32 version;
>  	int num_domains;
>  	bool power_scale_mw;
>  	u64 stats_addr;
> @@ -740,6 +741,7 @@ static int scmi_perf_protocol_init(struct scmi_device *dev)
>  			scmi_perf_domain_init_fc(handle, domain, &dom->fc_info);
>  	}
> 
> +	pinfo->version = version;
>  	handle->perf_ops = &perf_ops;
>  	handle->perf_priv = pinfo;
> 
> diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c
> index 5a8faa369d82..d11c6cd6bbab 100644
> --- a/drivers/firmware/arm_scmi/power.c
> +++ b/drivers/firmware/arm_scmi/power.c
> @@ -50,6 +50,7 @@ struct power_dom_info {
>  };
> 
>  struct scmi_power_info {
> +	u32 version;
>  	int num_domains;
>  	u64 stats_addr;
>  	u32 stats_size;
> @@ -211,6 +212,7 @@ static int scmi_power_protocol_init(struct scmi_device *dev)
>  		scmi_power_domain_attributes_get(handle, domain, dom);
>  	}
> 
> +	pinfo->version = version;
>  	handle->power_ops = &power_ops;
>  	handle->power_priv = pinfo;
> 
> diff --git a/drivers/firmware/arm_scmi/reset.c b/drivers/firmware/arm_scmi/reset.c
> index 438d74a2c80a..dce103781b3f 100644
> --- a/drivers/firmware/arm_scmi/reset.c
> +++ b/drivers/firmware/arm_scmi/reset.c
> @@ -48,6 +48,7 @@ struct reset_dom_info {
>  };
> 
>  struct scmi_reset_info {
> +	u32 version;
>  	int num_domains;
>  	struct reset_dom_info *dom_info;
>  };
> @@ -221,6 +222,7 @@ static int scmi_reset_protocol_init(struct scmi_device *dev)
>  		scmi_reset_domain_attributes_get(handle, domain, dom);
>  	}
> 
> +	pinfo->version = version;
>  	handle->reset_ops = &reset_ops;
>  	handle->reset_priv = pinfo;
> 
> diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
> index afa51bedfa5d..aac0243e2880 100644
> --- a/drivers/firmware/arm_scmi/sensors.c
> +++ b/drivers/firmware/arm_scmi/sensors.c
> @@ -68,6 +68,7 @@ struct scmi_msg_sensor_reading_get {
>  };
> 
>  struct sensors_info {
> +	u32 version;
>  	int num_sensors;
>  	int max_requests;
>  	u64 reg_addr;
> @@ -298,6 +299,7 @@ static int scmi_sensors_protocol_init(struct scmi_device *dev)
> 
>  	scmi_sensor_description_get(handle, sinfo);
> 
> +	sinfo->version = version;
>  	handle->sensor_ops = &sensor_ops;
>  	handle->sensor_priv = sinfo;
> 
> --
> 2.17.1
>