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uio: uio_sercos3: use device-managed functions for simple allocs 

This change converts the simple allocations [kzalloc()] to devm_kzalloc()
tying the life-time of these objects to the PCI device object.
It cleans up the error and exit path and bit, and does a minor correction
that -ENOMEM is returned (vs -ENODEV) in case the 'priv' object cannot be
allocated.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201120084207.50736-1-alexandru.ardelean@analog.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexandru Ardelean 2020-11-20 10:42:05 +02:00 committed by Greg Kroah-Hartman
parent ba022851f3
commit 023c9c6dc2
1 changed files with 4 additions and 10 deletions
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14
drivers/uio/uio_sercos3.c
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@ -124,16 +124,16 @@ static int sercos3_pci_probe(struct pci_dev *dev,
struct sercos3_priv *priv;
int i;
info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
info = devm_kzalloc(&dev->dev, sizeof(struct uio_info), GFP_KERNEL);
if (!info)
return -ENOMEM;
priv = kzalloc(sizeof(struct sercos3_priv), GFP_KERNEL);
priv = devm_kzalloc(&dev->dev, sizeof(struct sercos3_priv), GFP_KERNEL);
if (!priv)
goto out_free;
return -ENOMEM;
if (pci_enable_device(dev))
goto out_free_priv;
return -ENODEV;
if (pci_request_regions(dev, "sercos3"))
goto out_disable;
@ -174,10 +174,6 @@ out_unmap:
pci_release_regions(dev);
out_disable:
pci_disable_device(dev);
out_free_priv:
kfree(priv);
out_free:
kfree(info);
return -ENODEV;
}
@ -193,8 +189,6 @@ static void sercos3_pci_remove(struct pci_dev *dev)
if (info->mem[i].internal_addr)
iounmap(info->mem[i].internal_addr);
}
kfree(info->priv);
kfree(info);
}
static struct pci_device_id sercos3_pci_ids[] = {