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Commit a9b47c7f authored by Daniel Mack's avatar Daniel Mack Committed by Tomi Valkeinen
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video: pxa3xx-gcu: switch to devres functions 



Switch to devres allocators to clean up the error unwinding paths.

Signed-off-by: default avatarDaniel Mack <zonque@gmail.com>
Acked-by: default avatarHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 3437b2b8

drivers/video/pxa3xx-gcu.c

+39 −74
Original line number Diff line number Diff line
@@ -593,18 +593,10 @@ static int pxa3xx_gcu_probe(struct platform_device *pdev) 
	struct pxa3xx_gcu_priv *priv;

	struct device *dev = &pdev->dev;



	priv = kzalloc(sizeof(struct pxa3xx_gcu_priv), GFP_KERNEL);

	priv = devm_kzalloc(dev, sizeof(struct pxa3xx_gcu_priv), GFP_KERNEL);

	if (!priv)

		return -ENOMEM;



	for (i = 0; i < 8; i++) {

		ret = pxa3xx_gcu_add_buffer(dev, priv);

		if (ret) {

			dev_err(dev, "failed to allocate DMA memory\n");

			goto err_free_priv;

		}

	}



	init_waitqueue_head(&priv->wait_idle);

	init_waitqueue_head(&priv->wait_free);

	spin_lock_init(&priv->spinlock);
@@ -618,73 +610,63 @@ static int pxa3xx_gcu_probe(struct platform_device *pdev) 
	priv->misc_dev.name	= DRV_NAME,

	priv->misc_dev.fops	= &pxa3xx_gcu_miscdev_fops;



	/* register misc device */

	ret = misc_register(&priv->misc_dev);

	if (ret < 0) {

		dev_err(dev, "misc_register() for minor %d failed\n",

			MISCDEV_MINOR);

		goto err_free_priv;

	}



	/* handle IO resources */

	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (r == NULL) {

		dev_err(dev, "no I/O memory resource defined\n");

		ret = -ENODEV;

		goto err_misc_deregister;

	priv->mmio_base = devm_request_and_ioremap(dev, r);

	if (IS_ERR(priv->mmio_base)) {

		dev_err(dev, "failed to map I/O memory\n");

		return PTR_ERR(priv->mmio_base);

	}



	if (!request_mem_region(r->start, resource_size(r), pdev->name)) {

		dev_err(dev, "failed to request I/O memory\n");

		ret = -EBUSY;

		goto err_misc_deregister;

	/* enable the clock */

	priv->clk = devm_clk_get(dev, NULL);

	if (IS_ERR(priv->clk)) {

		dev_err(dev, "failed to get clock\n");

		return PTR_ERR(priv->clk);

	}



	priv->mmio_base = ioremap_nocache(r->start, resource_size(r));

	if (!priv->mmio_base) {

		dev_err(dev, "failed to map I/O memory\n");

		ret = -EBUSY;

		goto err_free_mem_region;

	/* request the IRQ */

	irq = platform_get_irq(pdev, 0);

	if (irq < 0) {

		dev_err(dev, "no IRQ defined\n");

		return -ENODEV;

	}



	ret = devm_request_irq(dev, irq, pxa3xx_gcu_handle_irq,

			       0, DRV_NAME, priv);

	if (ret < 0) {

		dev_err(dev, "request_irq failed\n");

		return ret;

	}



	/* allocate dma memory */

	priv->shared = dma_alloc_coherent(dev, SHARED_SIZE,

					  &priv->shared_phys, GFP_KERNEL);



	if (!priv->shared) {

		dev_err(dev, "failed to allocate DMA memory\n");

		ret = -ENOMEM;

		goto err_free_io;

		return -ENOMEM;

	}



	/* enable the clock */

	priv->clk = clk_get(dev, NULL);

	if (IS_ERR(priv->clk)) {

		dev_err(dev, "failed to get clock\n");

		ret = -ENODEV;

	/* register misc device */

	ret = misc_register(&priv->misc_dev);

	if (ret < 0) {

		dev_err(dev, "misc_register() for minor %d failed\n",

			MISCDEV_MINOR);

		goto err_free_dma;

	}



	ret = clk_enable(priv->clk);

	if (ret < 0) {

		dev_err(dev, "failed to enable clock\n");

		goto err_put_clk;

	}



	/* request the IRQ */

	irq = platform_get_irq(pdev, 0);

	if (irq < 0) {

		dev_err(dev, "no IRQ defined\n");

		ret = -ENODEV;

		goto err_put_clk;

		goto err_misc_deregister;

	}



	ret = request_irq(irq, pxa3xx_gcu_handle_irq,

			  0, DRV_NAME, priv);

	for (i = 0; i < 8; i++) {

		ret = pxa3xx_gcu_add_buffer(dev, priv);

		if (ret) {

		dev_err(dev, "request_irq failed\n");

		ret = -EBUSY;

		goto err_put_clk;

			dev_err(dev, "failed to allocate DMA memory\n");

			goto err_disable_clk;

		}

	}



	platform_set_drvdata(pdev, priv);
@@ -697,45 +679,28 @@ static int pxa3xx_gcu_probe(struct platform_device *pdev) 
			SHARED_SIZE, irq);

	return 0;



err_put_clk:

	clk_disable(priv->clk);

	clk_put(priv->clk);



err_free_dma:

	dma_free_coherent(dev, SHARED_SIZE,

			priv->shared, priv->shared_phys);



err_free_io:

	iounmap(priv->mmio_base);



err_free_mem_region:

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



err_misc_deregister:

	misc_deregister(&priv->misc_dev);



err_free_priv:

	pxa3xx_gcu_free_buffers(dev, priv);

	kfree(priv);

err_disable_clk:

	clk_disable(priv->clk);



	return ret;

}



static int pxa3xx_gcu_remove(struct platform_device *pdev)

{

	struct pxa3xx_gcu_priv *priv = platform_get_drvdata(pdev);

	struct resource *r = priv->resource_mem;

	struct device *dev = &pdev->dev;



	pxa3xx_gcu_wait_idle(priv);



	misc_deregister(&priv->misc_dev);

	dma_free_coherent(dev, SHARED_SIZE,

			  priv->shared, priv->shared_phys);

	iounmap(priv->mmio_base);

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

	clk_disable(priv->clk);

	dma_free_coherent(dev, SHARED_SIZE, priv->shared, priv->shared_phys);

	pxa3xx_gcu_free_buffers(dev, priv);

	kfree(priv);



	return 0;

}