From a9b47c7f23908bf2a5536040c46624178ba5f5c0 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Wed, 5 Mar 2014 17:12:49 +0100 Subject: [PATCH] video: pxa3xx-gcu: switch to devres functions Switch to devres allocators to clean up the error unwinding paths. Signed-off-by: Daniel Mack Acked-by: Haojian Zhuang Signed-off-by: Tomi Valkeinen --- drivers/video/pxa3xx-gcu.c | 113 +++++++++++++------------------------ 1 file changed, 39 insertions(+), 74 deletions(-) diff --git a/drivers/video/pxa3xx-gcu.c b/drivers/video/pxa3xx-gcu.c index 73c29ecf080f..417f9a27eb7d 100644 --- a/drivers/video/pxa3xx-gcu.c +++ b/drivers/video/pxa3xx-gcu.c @@ -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); - if (ret) { - dev_err(dev, "request_irq failed\n"); - ret = -EBUSY; - goto err_put_clk; + 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_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; } -- 2.39.5