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dma: cppi41: Switch to using managed resource in probe

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This change uses managed resource APIs to allocate resources such as,
mem, irq in order to simplify the driver unload or failure cases

Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Kiran Padwal
2014-09-24 15:53:46 +05:30
committed by Vinod Koul
parent 6e4a2a83f9
commit f0f3b5fa75
1 changed files with 5 additions and 11 deletions
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16
drivers/dma/cppi41.c
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@@ -938,7 +938,7 @@ static int cppi41_dma_probe(struct platform_device *pdev)
if (!glue_info)
return -EINVAL;
cdd = kzalloc(sizeof(*cdd), GFP_KERNEL);
cdd = devm_kzalloc(&pdev->dev, sizeof(*cdd), GFP_KERNEL);
if (!cdd)
return -ENOMEM;
@@ -959,10 +959,8 @@ static int cppi41_dma_probe(struct platform_device *pdev)
cdd->qmgr_mem = of_iomap(dev->of_node, 3);
if (!cdd->usbss_mem || !cdd->ctrl_mem || !cdd->sched_mem ||
!cdd->qmgr_mem) {
ret = -ENXIO;
goto err_remap;
}
!cdd->qmgr_mem)
return -ENXIO;
pm_runtime_enable(dev);
ret = pm_runtime_get_sync(dev);
@@ -989,7 +987,7 @@ static int cppi41_dma_probe(struct platform_device *pdev)
cppi_writel(USBSS_IRQ_PD_COMP, cdd->usbss_mem + USBSS_IRQ_ENABLER);
ret = request_irq(irq, glue_info->isr, IRQF_SHARED,
ret = devm_request_irq(&pdev->dev, irq, glue_info->isr, IRQF_SHARED,
dev_name(dev), cdd);
if (ret)
goto err_irq;
@@ -1009,7 +1007,6 @@ static int cppi41_dma_probe(struct platform_device *pdev)
err_of:
dma_async_device_unregister(&cdd->ddev);
err_dma_reg:
free_irq(irq, cdd);
err_irq:
cppi_writel(0, cdd->usbss_mem + USBSS_IRQ_CLEARR);
cleanup_chans(cdd);
@@ -1023,8 +1020,6 @@ err_get_sync:
iounmap(cdd->ctrl_mem);
iounmap(cdd->sched_mem);
iounmap(cdd->qmgr_mem);
err_remap:
kfree(cdd);
return ret;
}
@@ -1036,7 +1031,7 @@ static int cppi41_dma_remove(struct platform_device *pdev)
dma_async_device_unregister(&cdd->ddev);
cppi_writel(0, cdd->usbss_mem + USBSS_IRQ_CLEARR);
free_irq(cdd->irq, cdd);
devm_free_irq(&pdev->dev, cdd->irq, cdd);
cleanup_chans(cdd);
deinit_cppi41(&pdev->dev, cdd);
iounmap(cdd->usbss_mem);
@@ -1045,7 +1040,6 @@ static int cppi41_dma_remove(struct platform_device *pdev)
iounmap(cdd->qmgr_mem);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
kfree(cdd);
return 0;
}