linux-kernel - Re: [PATCH] nvmem: sc27xx: Change to use devm_hwspin_lock_request

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Date:   Tue, 1 Oct 2019 10:59:33 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Baolin Wang <baolin.wang@...aro.org>
Cc:     orsonzhai@...il.com, zhang.lyra@...il.com, freeman.liu@...soc.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvmem: sc27xx: Change to use
 devm_hwspin_lock_request_specific() to request one hwlock



On 27/09/2019 04:12, Baolin Wang wrote:
> Change to use devm_hwspin_lock_request_specific() to help to simplify the
> cleanup code for drivers requesting one hwlock. Thus we can remove the
> redundant sc27xx_efuse_remove() and platform_set_drvdata().
> 
> Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
> ---
>   drivers/nvmem/sc27xx-efuse.c |   13 +------------
>   1 file changed, 1 insertion(+), 12 deletions(-)


Applied thanks,

srini

> 
> diff --git a/drivers/nvmem/sc27xx-efuse.c b/drivers/nvmem/sc27xx-efuse.c
> index c6ee210..ab5e7e0 100644
> --- a/drivers/nvmem/sc27xx-efuse.c
> +++ b/drivers/nvmem/sc27xx-efuse.c
> @@ -211,7 +211,7 @@ static int sc27xx_efuse_probe(struct platform_device *pdev)
>   		return ret;
>   	}
>   
> -	efuse->hwlock = hwspin_lock_request_specific(ret);
> +	efuse->hwlock = devm_hwspin_lock_request_specific(&pdev->dev, ret);
>   	if (!efuse->hwlock) {
>   		dev_err(&pdev->dev, "failed to request hwspinlock\n");
>   		return -ENXIO;
> @@ -219,7 +219,6 @@ static int sc27xx_efuse_probe(struct platform_device *pdev)
>   
>   	mutex_init(&efuse->mutex);
>   	efuse->dev = &pdev->dev;
> -	platform_set_drvdata(pdev, efuse);
>   
>   	econfig.stride = 1;
>   	econfig.word_size = 1;
> @@ -232,21 +231,12 @@ static int sc27xx_efuse_probe(struct platform_device *pdev)
>   	nvmem = devm_nvmem_register(&pdev->dev, &econfig);
>   	if (IS_ERR(nvmem)) {
>   		dev_err(&pdev->dev, "failed to register nvmem config\n");
> -		hwspin_lock_free(efuse->hwlock);
>   		return PTR_ERR(nvmem);
>   	}
>   
>   	return 0;
>   }
>   
> -static int sc27xx_efuse_remove(struct platform_device *pdev)
> -{
> -	struct sc27xx_efuse *efuse = platform_get_drvdata(pdev);
> -
> -	hwspin_lock_free(efuse->hwlock);
> -	return 0;
> -}
> -
>   static const struct of_device_id sc27xx_efuse_of_match[] = {
>   	{ .compatible = "sprd,sc2731-efuse" },
>   	{ }
> @@ -254,7 +244,6 @@ static int sc27xx_efuse_remove(struct platform_device *pdev)
>   
>   static struct platform_driver sc27xx_efuse_driver = {
>   	.probe = sc27xx_efuse_probe,
> -	.remove = sc27xx_efuse_remove,
>   	.driver = {
>   		.name = "sc27xx-efuse",
>   		.of_match_table = sc27xx_efuse_of_match,
>