Hi

On Fri, Dec 07, 2012 at 12:15:24AM +0100, Julia Lawall (julia.law...@lip6.fr) 
wrote:
> +     mdev = devm_kzalloc(&pdev->dev, sizeof(struct mxc_w1_device),
> +                         GFP_KERNEL);
>       if (!mdev)
>               return -ENOMEM;
>  
> -     mdev->clk = clk_get(&pdev->dev, NULL);
> -     if (IS_ERR(mdev->clk)) {
> -             err = PTR_ERR(mdev->clk);
> -             goto failed_clk;
> -     }
> +     mdev->clk = devm_clk_get(&pdev->dev, NULL);
> +     if (IS_ERR(mdev->clk))
> +             return PTR_ERR(mdev->clk);
>  
>       mdev->clkdiv = (clk_get_rate(mdev->clk) / 1000000) - 1;
>  
> -     res = request_mem_region(res->start, resource_size(res),
> -                             "mxc_w1");
> -     if (!res) {
> -             err = -EBUSY;
> -             goto failed_req;
> -     }
> -
> -     mdev->regs = ioremap(res->start, resource_size(res));
> -     if (!mdev->regs) {
> -             dev_err(&pdev->dev, "Cannot map mxc_w1 registers\n");
> -             goto failed_ioremap;
> -     }
> +     res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +     mdev->regs = devm_request_and_ioremap(&pdev->dev, res);
> +     if (!mdev->regs)
> +             return -EBUSY;

I suppose mdev will be automatically freed, but who will release
mdev->clk and other private members of mdev structure?

-- 
        Evgeniy Polyakov
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