linux-kernel - Re: [PATCH v2] iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc

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Message-ID: <6739f62b-c88e-6792-3237-49787c73c662@huawei.com>
Date:   Tue, 3 Nov 2020 16:20:07 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Heiko Stuebner <heiko@...ech.de>
CC:     <linux-iio@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-rockchip@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] iio: adc: rockchip_saradc: fix missing
 clk_disable_unprepare() on error in rockchip_saradc_resume



在 2020/11/3 15:49, Qinglang Miao 写道:
> Fix the missing clk_disable_unprepare() of info->pclk
> before return from rockchip_saradc_resume in the error
> handling case when fails to prepare and enable info->clk.
> 
> Fixes: 44d6f2ef94f9 ("iio: adc: add driver for Rockchip saradc")
> Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
> ---
>   drivers/iio/adc/rockchip_saradc.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
> index 1f3d7d639..5eb566274 100644
> --- a/drivers/iio/adc/rockchip_saradc.c
> +++ b/drivers/iio/adc/rockchip_saradc.c
> @@ -461,9 +461,10 @@ static int rockchip_saradc_resume(struct device *dev)
>   		return ret;
>   
>   	ret = clk_prepare_enable(info->clk);
> -	if (ret)
> +	if (ret) {
> +		clk_disable_unprepare(info->pclk);
>   		return ret;
> -
> +	}
>   	return ret;
>   }
>   #endif
> 
Hi everyone,

I made a careless mistake for adding v2 as subject-prefix, this patch is 
the base version actually.

Sorry about that.

Thanks.