linux-kernel - Re: [PATCH 1/6] clk: imx93: unmap anatop base in error handling path

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Date:   Fri, 4 Nov 2022 23:20:21 +0200
From:   Abel Vesa <abel.vesa@...aro.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     abelvesa@...nel.org, mturquette@...libre.com, sboyd@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-imx@....com,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Peng Fan <peng.fan@....com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH 1/6] clk: imx93: unmap anatop base in error handling path

On 22-10-28 17:52:06, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> The anatop base is not unmapped during error handling path, fix it.
> 
> Fixes: 24defbe194b6 ("clk: imx: add i.MX93 clk")
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Peng Fan <peng.fan@....com>

Reviewed-by: Abel Vesa <abel.vesa@...aro.org>

> ---
>  drivers/clk/imx/clk-imx93.c | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/clk/imx/clk-imx93.c b/drivers/clk/imx/clk-imx93.c
> index 99cff1fd108b..9ef3fcbdd951 100644
> --- a/drivers/clk/imx/clk-imx93.c
> +++ b/drivers/clk/imx/clk-imx93.c
> @@ -258,7 +258,7 @@ static int imx93_clocks_probe(struct platform_device *pdev)
>  	struct device_node *np = dev->of_node;
>  	const struct imx93_clk_root *root;
>  	const struct imx93_clk_ccgr *ccgr;
> -	void __iomem *base = NULL;
> +	void __iomem *base, *anatop_base;
>  	int i, ret;
>  
>  	clk_hw_data = kzalloc(struct_size(clk_hw_data, hws,
> @@ -285,20 +285,22 @@ static int imx93_clocks_probe(struct platform_device *pdev)
>  								    "sys_pll_pfd2", 1, 2);
>  
>  	np = of_find_compatible_node(NULL, NULL, "fsl,imx93-anatop");
> -	base = of_iomap(np, 0);
> +	anatop_base = of_iomap(np, 0);
>  	of_node_put(np);
> -	if (WARN_ON(!base))
> +	if (WARN_ON(!anatop_base))
>  		return -ENOMEM;
>  
> -	clks[IMX93_CLK_AUDIO_PLL] = imx_clk_fracn_gppll("audio_pll", "osc_24m", base + 0x1200,
> +	clks[IMX93_CLK_AUDIO_PLL] = imx_clk_fracn_gppll("audio_pll", "osc_24m", anatop_base + 0x1200,
>  							&imx_fracn_gppll);
> -	clks[IMX93_CLK_VIDEO_PLL] = imx_clk_fracn_gppll("video_pll", "osc_24m", base + 0x1400,
> +	clks[IMX93_CLK_VIDEO_PLL] = imx_clk_fracn_gppll("video_pll", "osc_24m", anatop_base + 0x1400,
>  							&imx_fracn_gppll);
>  
>  	np = dev->of_node;
>  	base = devm_platform_ioremap_resource(pdev, 0);
> -	if (WARN_ON(IS_ERR(base)))
> +	if (WARN_ON(IS_ERR(base))) {
> +		iounmap(anatop_base);
>  		return PTR_ERR(base);
> +	}
>  
>  	for (i = 0; i < ARRAY_SIZE(root_array); i++) {
>  		root = &root_array[i];
> @@ -327,6 +329,7 @@ static int imx93_clocks_probe(struct platform_device *pdev)
>  
>  unregister_hws:
>  	imx_unregister_hw_clocks(clks, IMX93_CLK_END);
> +	iounmap(anatop_base);
>  
>  	return ret;
>  }
> -- 
> 2.37.1
>