linux-kernel - Re: [PATCH v10 14/24] coresight: allow funnel driver to be built as module

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Message-ID: <3d4bf829-abca-3f5f-fa2f-282305a9dc7a@arm.com>
Date:   Sun, 13 Sep 2020 14:24:52 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     tingwei@...eaurora.org, mathieu.poirier@...aro.org,
        alexander.shishkin@...ux.intel.com, mike.leach@...aro.org
Cc:     kim.phillips@....com, gregkh@...uxfoundation.org,
        leo.yan@...aro.org, rdunlap@...radead.org, linux@...linux.org.uk,
        ykaukab@...e.de, tsoni@...eaurora.org,
        saiprakash.ranjan@...eaurora.org, jinlmao@...eaurora.org,
        coresight@...ts.linaro.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, lkp@...el.com
Subject: Re: [PATCH v10 14/24] coresight: allow funnel driver to be built as
 module

On 08/21/2020 04:44 AM, Tingwei Zhang wrote:
> From: Kim Phillips <kim.phillips@....com>
> 
> Allow to build coresight-funnel as module, for ease of development.
> 
> - combine static and dynamic funnel init into single
>    module_init/exit call
> - add funnel_remove functions, for module unload
> - add a MODULE_DEVICE_TABLE for autoloading on boot
> 
> Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
> Cc: Leo Yan <leo.yan@...aro.org>
> Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Cc: Randy Dunlap <rdunlap@...radead.org>
> Cc: Suzuki K Poulose <Suzuki.Poulose@....com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Russell King <linux@...linux.org.uk>
> Co-developed-by: Mian Yousaf Kaukab <ykaukab@...e.de>
> Signed-off-by: Mian Yousaf Kaukab <ykaukab@...e.de>
> Signed-off-by: Kim Phillips <kim.phillips@....com>
> Signed-off-by: Tingwei Zhang <tingwei@...eaurora.org>
> Reported-by: kernel test robot <lkp@...el.com>
> Tested-by: Mike Leach <mike.leach@...aro.org>
> Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
> ---
>   .../hwtracing/coresight/coresight-funnel.c    | 64 ++++++++++++++++++-
>   1 file changed, 62 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c
> index 900690a9f7f0..07bc20391fac 100644
> --- a/drivers/hwtracing/coresight/coresight-funnel.c
> +++ b/drivers/hwtracing/coresight/coresight-funnel.c
> @@ -274,6 +274,15 @@ static int funnel_probe(struct device *dev, struct resource *res)
>   	return ret;
>   }
>   
> +static int __exit funnel_remove(struct device *dev)
> +{
> +	struct funnel_drvdata *drvdata = dev_get_drvdata(dev);
> +
> +	coresight_unregister(drvdata->csdev);
> +
> +	return 0;
> +}
> +
>   #ifdef CONFIG_PM
>   static int funnel_runtime_suspend(struct device *dev)
>   {
> @@ -319,20 +328,32 @@ static int static_funnel_probe(struct platform_device *pdev)
>   	return ret;
>   }
>   
> +static int __exit static_funnel_remove(struct platform_device *pdev)
> +{
> +	funnel_remove(&pdev->dev);
> +	pm_runtime_disable(&pdev->dev);
> +	return 0;
> +}
> +
>   static const struct of_device_id static_funnel_match[] = {
>   	{.compatible = "arm,coresight-static-funnel"},
>   	{}
>   };
>   
> +MODULE_DEVICE_TABLE(of, static_funnel_match);
> +
>   #ifdef CONFIG_ACPI
>   static const struct acpi_device_id static_funnel_ids[] = {
>   	{"ARMHC9FE", 0},
>   	{},
>   };
> +
> +MODULE_DEVICE_TABLE(acpi, static_funnel_ids);
>   #endif
>   
>   static struct platform_driver static_funnel_driver = {
>   	.probe          = static_funnel_probe,
> +	.remove          = static_funnel_remove,
>   	.driver         = {
>   		.name   = "coresight-static-funnel",
>   		.of_match_table = static_funnel_match,

Sorry missed this. Please set the owner field here. With that :

Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>