On Wednesday, June 26, 2013 6:38 PM, Mark Brown wrote:
>
> Signed-off-by: Mark Brown <[email protected]>
> ---
> sound/soc/samsung/ac97.c | 22 +++-------------------
> 1 file changed, 3 insertions(+), 19 deletions(-)
>
> diff --git a/sound/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c
> index 1c85999..3e6a1d2 100644
> --- a/sound/soc/samsung/ac97.c
> +++ b/sound/soc/samsung/ac97.c
> @@ -417,8 +417,8 @@ static int s3c_ac97_probe(struct platform_device *pdev)
> return -ENXIO;
> }
>
> - if (!request_mem_region(mem_res->start,
> - resource_size(mem_res), "ac97")) {
> + s3c_ac97.regs = devm_ioremap_resource(&pdev->dev, mem_res);
> + if (!s3c_ac97.regs) {
> dev_err(&pdev->dev, "Unable to request register region\n");
> return -EBUSY;
CC'ed Thierry Reding, Sachin Kamat,
According to the comment of devm_ioremap_resource(), (lib/devres.c)
* Returns a pointer to the remapped memory or an ERR_PTR() encoded error code
* on failure. Usage example:
*
* res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
* base = devm_ioremap_resource(&pdev->dev, res);
* if (IS_ERR(base))
* return PTR_ERR(base);
*/
Thus, the following would be better.
+ s3c_ac97.regs = devm_ioremap_resource(&pdev->dev, mem_res);
+ if (IS_ERR(s3c_ac97.regs))
+ return PTR_ERR(s3c_ac97.regs);
Best regards,
Jingoo Han
> }
> @@ -433,13 +433,6 @@ static int s3c_ac97_probe(struct platform_device *pdev)
> init_completion(&s3c_ac97.done);
> mutex_init(&s3c_ac97.lock);
>
> - s3c_ac97.regs = ioremap(mem_res->start, resource_size(mem_res));
> - if (s3c_ac97.regs == NULL) {
> - dev_err(&pdev->dev, "Unable to ioremap register region\n");
> - ret = -ENXIO;
> - goto err1;
> - }
> -
> s3c_ac97.ac97_clk = devm_clk_get(&pdev->dev, "ac97");
> if (IS_ERR(s3c_ac97.ac97_clk)) {
> dev_err(&pdev->dev, "ac97 failed to get ac97_clock\n");
> @@ -481,16 +474,13 @@ err4:
> err3:
> clk_disable_unprepare(s3c_ac97.ac97_clk);
> err2:
> - iounmap(s3c_ac97.regs);
> -err1:
> - release_mem_region(mem_res->start, resource_size(mem_res));
>
> return ret;
> }
>
> static int s3c_ac97_remove(struct platform_device *pdev)
> {
> - struct resource *mem_res, *irq_res;
> + struct resource *irq_res;
>
> asoc_dma_platform_unregister(&pdev->dev);
> snd_soc_unregister_component(&pdev->dev);
> @@ -501,12 +491,6 @@ static int s3c_ac97_remove(struct platform_device *pdev)
>
> clk_disable_unprepare(s3c_ac97.ac97_clk);
>
> - iounmap(s3c_ac97.regs);
> -
> - mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (mem_res)
> - release_mem_region(mem_res->start, resource_size(mem_res));
> -
> return 0;
> }
>
> --
> 1.8.3.1
>
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