linux-kernel - Re: [PATCH 4/7] i2c: s3c2410: Convert to use devm

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Message-ID: <CAK9yfHyAWtuRFuygK2L53GrAaZ3k7rasTRt+N6TtU2+N-UHVTw@mail.gmail.com>
Date:	Fri, 23 Nov 2012 11:44:48 +0530
From:	Sachin Kamat <sachin.kamat@...aro.org>
To:	Tushar Behera <tushar.behera@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, w.sang@...gutronix.de,
	kgene.kim@...sung.com, patches@...aro.org
Subject: Re: [PATCH 4/7] i2c: s3c2410: Convert to use devm_ioremap()

Hi Tushar,

On 23 November 2012 11:29, Tushar Behera <tushar.behera@...aro.org> wrote:
> Signed-off-by: Tushar Behera <tushar.behera@...aro.org>
> ---
>  drivers/i2c/busses/i2c-s3c2410.c |   13 ++++---------
>  1 files changed, 4 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
> index a274ef7..3446af2 100644
> --- a/drivers/i2c/busses/i2c-s3c2410.c
> +++ b/drivers/i2c/busses/i2c-s3c2410.c
> @@ -996,7 +996,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
>                 goto err_clk;
>         }
>
> -       i2c->regs = ioremap(res->start, resource_size(res));
> +       i2c->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
>

request_mem_region and ioremap and be replaced using a single
devm_request_and_ioremap() call.

Also you may squash patches 2-5 into single convert to devm_* functions patch.


>         if (i2c->regs == NULL) {
>                 dev_err(&pdev->dev, "cannot map IO\n");
> @@ -1016,7 +1016,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
>
>         ret = s3c24xx_i2c_init(i2c);
>         if (ret != 0)
> -               goto err_iomap;
> +               goto err_clk;
>
>         /* find the IRQ for this unit (note, this relies on the init call to
>          * ensure no current IRQs pending
> @@ -1025,7 +1025,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
>         i2c->irq = ret = platform_get_irq(pdev, 0);
>         if (ret <= 0) {
>                 dev_err(&pdev->dev, "cannot find IRQ\n");
> -               goto err_iomap;
> +               goto err_clk;
>         }
>
>         ret = request_irq(i2c->irq, s3c24xx_i2c_irq, 0,
> @@ -1033,7 +1033,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
>
>         if (ret != 0) {
>                 dev_err(&pdev->dev, "cannot claim IRQ %d\n", i2c->irq);
> -               goto err_iomap;
> +               goto err_clk;
>         }
>
>         ret = s3c24xx_i2c_register_cpufreq(i2c);
> @@ -1073,9 +1073,6 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
>   err_irq:
>         free_irq(i2c->irq, i2c);
>
> - err_iomap:
> -       iounmap(i2c->regs);
> -
>   err_clk:
>         clk_disable_unprepare(i2c->clk);
>         return ret;
> @@ -1100,8 +1097,6 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev)
>
>         clk_disable_unprepare(i2c->clk);
>
> -       iounmap(i2c->regs);
> -
>         s3c24xx_i2c_dt_gpio_free(i2c);
>
>         return 0;
> --
> 1.7.4.1
>
> --
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-- 
With warm regards,
Sachin
--
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