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Commit bea0ed08 authored by Stephen Warren's avatar Stephen Warren Committed by Mark Brown
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ASoC: Tegra I2S: Use devm_ APIs and module_platform_driver 



module_platform_drive saves some boiler-plate code.

The devm_ APIs remove the need to manually clean up allocations,
thus removing some code.

Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 65713ce8

sound/soc/tegra/tegra_i2s.c

+10 −35
Original line number Diff line number Diff line
@@ -362,11 +362,11 @@ static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev) 
		return -EINVAL;

	}



	i2s = kzalloc(sizeof(struct tegra_i2s), GFP_KERNEL);

	i2s = devm_kzalloc(&pdev->dev, sizeof(struct tegra_i2s), GFP_KERNEL);

	if (!i2s) {

		dev_err(&pdev->dev, "Can't allocate tegra_i2s\n");

		ret = -ENOMEM;

		goto exit;

		goto err;

	}

	dev_set_drvdata(&pdev->dev, i2s);
@@ -374,7 +374,7 @@ static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev) 
	if (IS_ERR(i2s->clk_i2s)) {

		dev_err(&pdev->dev, "Can't retrieve i2s clock\n");

		ret = PTR_ERR(i2s->clk_i2s);

		goto err_free;

		goto err;

	}



	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -391,19 +391,19 @@ static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev) 
		goto err_clk_put;

	}



	memregion = request_mem_region(mem->start, resource_size(mem),

					DRV_NAME);

	memregion = devm_request_mem_region(&pdev->dev, mem->start,

					    resource_size(mem), DRV_NAME);

	if (!memregion) {

		dev_err(&pdev->dev, "Memory region already claimed\n");

		ret = -EBUSY;

		goto err_clk_put;

	}



	i2s->regs = ioremap(mem->start, resource_size(mem));

	i2s->regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));

	if (!i2s->regs) {

		dev_err(&pdev->dev, "ioremap failed\n");

		ret = -ENOMEM;

		goto err_release;

		goto err_clk_put;

	}



	i2s->capture_dma_data.addr = mem->start + TEGRA_I2S_FIFO2;
@@ -422,43 +422,29 @@ static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev) 
	if (ret) {

		dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);

		ret = -ENOMEM;

		goto err_unmap;

		goto err_clk_put;

	}



	tegra_i2s_debug_add(i2s, pdev->id);



	return 0;



err_unmap:

	iounmap(i2s->regs);

err_release:

	release_mem_region(mem->start, resource_size(mem));

err_clk_put:

	clk_put(i2s->clk_i2s);

err_free:

	kfree(i2s);

exit:

err:

	return ret;

}



static int __devexit tegra_i2s_platform_remove(struct platform_device *pdev)

{

	struct tegra_i2s *i2s = dev_get_drvdata(&pdev->dev);

	struct resource *res;



	snd_soc_unregister_dai(&pdev->dev);



	tegra_i2s_debug_remove(i2s);



	iounmap(i2s->regs);



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	release_mem_region(res->start, resource_size(res));



	clk_put(i2s->clk_i2s);



	kfree(i2s);



	return 0;

}
@@ -470,18 +456,7 @@ static struct platform_driver tegra_i2s_driver = { 
	.probe = tegra_i2s_platform_probe,

	.remove = __devexit_p(tegra_i2s_platform_remove),

};



static int __init snd_tegra_i2s_init(void)

{

	return platform_driver_register(&tegra_i2s_driver);

}

module_init(snd_tegra_i2s_init);



static void __exit snd_tegra_i2s_exit(void)

{

	platform_driver_unregister(&tegra_i2s_driver);

}

module_exit(snd_tegra_i2s_exit);

module_platform_driver(tegra_i2s_driver);



MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");

MODULE_DESCRIPTION("Tegra I2S ASoC driver");