diff options
author | Fabio Estevam <fabio.estevam@freescale.com> | 2014-12-29 18:20:52 +0100 |
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committer | Vinod Koul <vinod.koul@intel.com> | 2015-01-13 19:21:07 +0100 |
commit | 7f24e0ee00d052f1710b68bbf6221cc674eb7a9b (patch) | |
tree | e4a78e402c2d27e7d615dc6590071a363bddf591 /drivers/dma | |
parent | dmaengine: imx-sdma: Declare slave capabilities for the generic code (diff) | |
download | linux-7f24e0ee00d052f1710b68bbf6221cc674eb7a9b.tar.xz linux-7f24e0ee00d052f1710b68bbf6221cc674eb7a9b.zip |
dmaengine: imx-sdma: Use devm functions
By using devm functions we can make the code shorter and cleaner.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r-- | drivers/dma/imx-sdma.c | 62 |
1 files changed, 16 insertions, 46 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index d28c26bf7a2a..125c326c525f 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1472,7 +1472,7 @@ static int sdma_probe(struct platform_device *pdev) if (ret) return ret; - sdma = kzalloc(sizeof(*sdma), GFP_KERNEL); + sdma = devm_kzalloc(&pdev->dev, sizeof(*sdma), GFP_KERNEL); if (!sdma) return -ENOMEM; @@ -1481,48 +1481,34 @@ static int sdma_probe(struct platform_device *pdev) sdma->dev = &pdev->dev; sdma->drvdata = drvdata; - iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - if (!iores || irq < 0) { - ret = -EINVAL; - goto err_irq; - } + if (irq < 0) + return -EINVAL; - if (!request_mem_region(iores->start, resource_size(iores), pdev->name)) { - ret = -EBUSY; - goto err_request_region; - } + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + sdma->regs = devm_ioremap_resource(&pdev->dev, iores); + if (IS_ERR(sdma->regs)) + return PTR_ERR(sdma->regs); sdma->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); - if (IS_ERR(sdma->clk_ipg)) { - ret = PTR_ERR(sdma->clk_ipg); - goto err_clk; - } + if (IS_ERR(sdma->clk_ipg)) + return PTR_ERR(sdma->clk_ipg); sdma->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); - if (IS_ERR(sdma->clk_ahb)) { - ret = PTR_ERR(sdma->clk_ahb); - goto err_clk; - } + if (IS_ERR(sdma->clk_ahb)) + return PTR_ERR(sdma->clk_ahb); clk_prepare(sdma->clk_ipg); clk_prepare(sdma->clk_ahb); - sdma->regs = ioremap(iores->start, resource_size(iores)); - if (!sdma->regs) { - ret = -ENOMEM; - goto err_ioremap; - } - - ret = request_irq(irq, sdma_int_handler, 0, "sdma", sdma); + ret = devm_request_irq(&pdev->dev, irq, sdma_int_handler, 0, "sdma", + sdma); if (ret) - goto err_request_irq; + return ret; sdma->script_addrs = kzalloc(sizeof(*sdma->script_addrs), GFP_KERNEL); - if (!sdma->script_addrs) { - ret = -ENOMEM; - goto err_alloc; - } + if (!sdma->script_addrs) + return -ENOMEM; /* initially no scripts available */ saddr_arr = (s32 *)sdma->script_addrs; @@ -1627,38 +1613,22 @@ err_register: dma_async_device_unregister(&sdma->dma_device); err_init: kfree(sdma->script_addrs); -err_alloc: - free_irq(irq, sdma); -err_request_irq: - iounmap(sdma->regs); -err_ioremap: -err_clk: - release_mem_region(iores->start, resource_size(iores)); -err_request_region: -err_irq: - kfree(sdma); return ret; } static int sdma_remove(struct platform_device *pdev) { struct sdma_engine *sdma = platform_get_drvdata(pdev); - struct resource *iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); - int irq = platform_get_irq(pdev, 0); int i; dma_async_device_unregister(&sdma->dma_device); kfree(sdma->script_addrs); - free_irq(irq, sdma); - iounmap(sdma->regs); - release_mem_region(iores->start, resource_size(iores)); /* Kill the tasklet */ for (i = 0; i < MAX_DMA_CHANNELS; i++) { struct sdma_channel *sdmac = &sdma->channel[i]; tasklet_kill(&sdmac->tasklet); } - kfree(sdma); platform_set_drvdata(pdev, NULL); dev_info(&pdev->dev, "Removed...\n"); |