linux-kernel - Re: [PATCH v1 4/4] hwmon: acpi_power_meter: Get rid of ACPICA message printing

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Message-ID: <20210306032058.GB192807@roeck-us.net>
Date:   Fri, 5 Mar 2021 19:20:58 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, Jean Delvare <jdelvare@...e.com>,
        linux-hwmon@...r.kernel.org
Subject: Re: [PATCH v1 4/4] hwmon: acpi_power_meter: Get rid of ACPICA
 message printing

On Fri, Mar 05, 2021 at 07:43:54PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Use acpi_evaluation_failure_warn() introduced previously instead of
> the ACPICA-specific ACPI_EXCEPTION() macro to log warning messages
> regarding ACPI object evaluation failures and use dev_err() instead
> of ACPI_EXCEPTION() to log _PMC package parsing failures, which is
> consistent with the other messages printed by the code in question.
> 
> Next, drop the ACPI_MODULE_NAME() definition only used by the ACPICA
> message printing macro.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Acked-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/hwmon/acpi_power_meter.c |   29 +++++++++++++++++++----------
>  1 file changed, 19 insertions(+), 10 deletions(-)
> 
> Index: linux-pm/drivers/hwmon/acpi_power_meter.c
> ===================================================================
> --- linux-pm.orig/drivers/hwmon/acpi_power_meter.c
> +++ linux-pm/drivers/hwmon/acpi_power_meter.c
> @@ -20,7 +20,6 @@
>  #include <linux/acpi.h>
>  
>  #define ACPI_POWER_METER_NAME		"power_meter"
> -ACPI_MODULE_NAME(ACPI_POWER_METER_NAME);
>  #define ACPI_POWER_METER_DEVICE_NAME	"Power Meter"
>  #define ACPI_POWER_METER_CLASS		"pwr_meter_resource"
>  
> @@ -114,7 +113,8 @@ static int update_avg_interval(struct ac
>  	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_GAI",
>  				       NULL, &data);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GAI"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_GAI",
> +					     status);
>  		return -ENODEV;
>  	}
>  
> @@ -166,7 +166,8 @@ static ssize_t set_avg_interval(struct d
>  	mutex_unlock(&resource->lock);
>  
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PAI"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PAI",
> +					     status);
>  		return -EINVAL;
>  	}
>  
> @@ -186,7 +187,8 @@ static int update_cap(struct acpi_power_
>  	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_GHL",
>  				       NULL, &data);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _GHL"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_GHL",
> +					     status);
>  		return -ENODEV;
>  	}
>  
> @@ -237,7 +239,8 @@ static ssize_t set_cap(struct device *de
>  	mutex_unlock(&resource->lock);
>  
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SHL"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_SHL",
> +					     status);
>  		return -EINVAL;
>  	}
>  
> @@ -270,7 +273,8 @@ static int set_acpi_trip(struct acpi_pow
>  	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PTP",
>  				       &args, &data);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PTP"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PTP",
> +					     status);
>  		return -EINVAL;
>  	}
>  
> @@ -322,7 +326,8 @@ static int update_meter(struct acpi_powe
>  	status = acpi_evaluate_integer(resource->acpi_dev->handle, "_PMM",
>  				       NULL, &data);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMM"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PMM",
> +					     status);
>  		return -ENODEV;
>  	}
>  
> @@ -549,7 +554,8 @@ static int read_domain_devices(struct ac
>  	status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMD", NULL,
>  				      &buffer);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMD"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PMD",
> +					     status);
>  		return -ENODEV;
>  	}
>  
> @@ -745,7 +751,8 @@ static int read_capabilities(struct acpi
>  	status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMC", NULL,
>  				      &buffer);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMC"));
> +		acpi_evaluation_failure_warn(resource->acpi_dev->handle, "_PMC",
> +					     status);
>  		return -ENODEV;
>  	}
>  
> @@ -765,7 +772,9 @@ static int read_capabilities(struct acpi
>  
>  	status = acpi_extract_package(pss, &format, &state);
>  	if (ACPI_FAILURE(status)) {
> -		ACPI_EXCEPTION((AE_INFO, status, "Invalid data"));
> +		dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME
> +			"_PMC package parsing failed: %s\n",
> +			acpi_format_exception(status));
>  		res = -EFAULT;
>  		goto end;
>  	}
> 
> 
>