[PATCH 1/4] uio: uio_cif: use devm_kzalloc() for uio_info object

From: Alexandru Ardelean
Date: Thu Nov 19 2020 - 10:44:49 EST


The uio_info object is free'd last, so it's life-time is tied PCI device
object. Using devm_kzalloc() cleans up the error path a bit and the exit
path.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
---
drivers/uio/uio_cif.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/uio/uio_cif.c b/drivers/uio/uio_cif.c
index ab60186f9759..653f842a1491 100644
--- a/drivers/uio/uio_cif.c
+++ b/drivers/uio/uio_cif.c
@@ -43,12 +43,12 @@ static int hilscher_pci_probe(struct pci_dev *dev,
{
struct uio_info *info;

- info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ info = devm_kzalloc(&dev->dev, sizeof(struct uio_info), GFP_KERNEL);
if (!info)
return -ENOMEM;

if (pci_enable_device(dev))
- goto out_free;
+ return -ENODEV;

if (pci_request_regions(dev, "hilscher"))
goto out_disable;
@@ -92,8 +92,6 @@ static int hilscher_pci_probe(struct pci_dev *dev,
pci_release_regions(dev);
out_disable:
pci_disable_device(dev);
-out_free:
- kfree (info);
return -ENODEV;
}

@@ -105,8 +103,6 @@ static void hilscher_pci_remove(struct pci_dev *dev)
pci_release_regions(dev);
pci_disable_device(dev);
iounmap(info->mem[0].internal_addr);
-
- kfree (info);
}

static struct pci_device_id hilscher_pci_ids[] = {
--
2.17.1