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authorAlexandru Ardelean <alexandru.ardelean@analog.com>2020-11-20 10:56:24 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-12-09 21:58:22 +0300
commit44dccc4a2bd10abfacd25b7d125fb5c3abbb263d (patch)
tree2eb415ab4b1c8f6db0b66ad96cb8701c8c50f22e /drivers/uio/uio_dmem_genirq.c
parent4849e0eda387931fe251fe956cbfddeee852dacf (diff)
downloadlinux-44dccc4a2bd10abfacd25b7d125fb5c3abbb263d.tar.xz
uio: uio_dmem_genirq: convert simple allocations to device-managed
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>
Diffstat (limited to 'drivers/uio/uio_dmem_genirq.c')
-rw-r--r--drivers/uio/uio_dmem_genirq.c34
1 files changed, 8 insertions, 26 deletions
diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c
index ec7f66f4555a..72aa372d6ba6 100644
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -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;
}