linux-kernel - Re: [PATCH v6 2/3] usb: musb: da8xx: Use devm in probe

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Message-ID: <20160906191703.GD22318@uda0271908>
Date:   Tue, 6 Sep 2016 14:17:03 -0500
From:   Bin Liu <b-liu@...com>
To:     David Lechner <david@...hnology.com>
CC:     Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <khilman@...nel.org>, <nsekhar@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Subject: Re: [PATCH v6 2/3] usb: musb: da8xx: Use devm in probe

Hi,

On Mon, Sep 05, 2016 at 03:00:32PM -0500, David Lechner wrote:
> Simplify things a bit by using devm functions where possible.
> 
> Signed-off-by: David Lechner <david@...hnology.com>
> ---
>  drivers/usb/musb/da8xx.c | 19 +++++--------------
>  1 file changed, 5 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
> index b03d3b8..0c1997c 100644
> --- a/drivers/usb/musb/da8xx.c
> +++ b/drivers/usb/musb/da8xx.c
> @@ -490,20 +490,18 @@ static int da8xx_probe(struct platform_device *pdev)
>  	struct da8xx_glue		*glue;
>  	struct platform_device_info	pinfo;
>  	struct clk			*clk;
> +	int				ret;
>  
> -	int				ret = -ENOMEM;
> -
> -	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
> +	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
>  	if (!glue) {
>  		dev_err(&pdev->dev, "failed to allocate glue context\n");

Greg's usb-next already has a patch which drops this line. You might
have to rebase this patch, so that it can go to v4.9-rc1.

Thanks,
-Bin.