linux-kernel - Re: [PATCH] clk: mvebu: armada-37xx-tbg: Balance devm_clk

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Date:   Wed, 10 Oct 2018 10:36:32 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Gregory CLEMENT <gregory.clement@...tlin.com>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-arm-kernel@...ts.infradead.org,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        Miquèl Raynal <miquel.raynal@...tlin.com>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>
Subject: Re: [PATCH] clk: mvebu: armada-37xx-tbg: Balance devm_clk_get in probe

Quoting Gregory CLEMENT (2018-09-14 08:34:21)
> The parent clock is get only to have its name, and then the clock is no
> more used, so we can safely free it using devm_clk_put.
> 
> Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
> ---
>  drivers/clk/mvebu/armada-37xx-tbg.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/clk/mvebu/armada-37xx-tbg.c b/drivers/clk/mvebu/armada-37xx-tbg.c
> index 71f30149e80e..caaa91a41683 100644
> --- a/drivers/clk/mvebu/armada-37xx-tbg.c
> +++ b/drivers/clk/mvebu/armada-37xx-tbg.c
> @@ -102,6 +102,7 @@ static int armada_3700_tbg_clock_probe(struct platform_device *pdev)
>                 return -EINVAL;
>         }
>         parent_name = __clk_get_name(parent);
> +       devm_clk_put(dev, parent);

So then why use devm_clk_get()? Please replace both so tha
devm_clk_put() doesn't need to be used..

>  
>         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>         reg = devm_ioremap_resource(dev, res);