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uio: uio_dmem_genirq: convert simple allocations to device-managed

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This change converts the simple allocations in the driver to used
device-managed allocation functions.
This removes the error path entirely in the probe function, and reduces
some code in the remove function.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201120075625.12272-1-alexandru.ardelean@analog.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexandru Ardelean 2020-11-20 09:56:24 +02:00 committed by Greg Kroah-Hartman
parent 4849e0eda3
commit 44dccc4a2b
1 changed files with 8 additions and 26 deletions
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34
drivers/uio/uio_dmem_genirq.c
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@ -154,11 +154,10 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
if (pdev->dev.of_node) {
/* alloc uioinfo for one device */
uioinfo = kzalloc(sizeof(*uioinfo), GFP_KERNEL);
uioinfo = devm_kzalloc(&pdev->dev, sizeof(*uioinfo), GFP_KERNEL);
if (!uioinfo) {
ret = -ENOMEM;
dev_err(&pdev->dev, "unable to kmalloc\n");
goto bad2;
return -ENOMEM;
}
uioinfo->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOFn",
pdev->dev.of_node);
@ -167,20 +166,19 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
if (!uioinfo || !uioinfo->name || !uioinfo->version) {
dev_err(&pdev->dev, "missing platform_data\n");
goto bad0;
return -EINVAL;
}
if (uioinfo->handler || uioinfo->irqcontrol ||
uioinfo->irq_flags & IRQF_SHARED) {
dev_err(&pdev->dev, "interrupt configuration error\n");
goto bad0;
return -EINVAL;
}
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
ret = -ENOMEM;
dev_err(&pdev->dev, "unable to kmalloc\n");
goto bad0;
return -ENOMEM;
}
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
@ -197,7 +195,7 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
if (ret == -ENXIO && pdev->dev.of_node)
ret = UIO_IRQ_NONE;
else if (ret < 0)
goto bad1;
return ret;
uioinfo->irq = ret;
}
@ -286,19 +284,11 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
if (ret) {
dev_err(&pdev->dev, "unable to register uio device\n");
pm_runtime_disable(&pdev->dev);
goto bad1;
return ret;
}
platform_set_drvdata(pdev, priv);
return 0;
bad1:
kfree(priv);
bad0:
/* kfree uioinfo for OF */
if (pdev->dev.of_node)
kfree(uioinfo);
bad2:
return ret;
}
static int uio_dmem_genirq_remove(struct platform_device *pdev)
@ -308,14 +298,6 @@ static int uio_dmem_genirq_remove(struct platform_device *pdev)
uio_unregister_device(priv->uioinfo);
pm_runtime_disable(&pdev->dev);
priv->uioinfo->handler = NULL;
priv->uioinfo->irqcontrol = NULL;
/* kfree uioinfo for OF */
if (pdev->dev.of_node)
kfree(priv->uioinfo);
kfree(priv);
return 0;
}