[PATCH 5.13 650/800] misc/pvpanic-pci: Fix error handling in pvpanic_pci_probe()

[Greg Kroah-Hartman]

From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>

[ Upstream commit 372dae89972594393b57f29ec44e351fa7eedbbe ]

There is no error handling path in the probe function.
Switch to managed resource so that errors in the probe are handled easily
and simplify the remove function accordingly.

Fixes: db3a4f0abefd ("misc/pvpanic: add PCI driver")
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Link: https://lore.kernel.org/r/ab071b1f4ed6e1174f9199095fb16a58bb406090.1621665058.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/misc/pvpanic/pvpanic-pci.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/misc/pvpanic/pvpanic-pci.c b/drivers/misc/pvpanic/pvpanic-pci.c
index 9ecc4e8559d5..046ce4ecc195 100644
--- a/drivers/misc/pvpanic/pvpanic-pci.c
+++ b/drivers/misc/pvpanic/pvpanic-pci.c
@@ -78,15 +78,15 @@ static int pvpanic_pci_probe(struct pci_dev *pdev,
 	void __iomem *base;
 	int ret;
 
-	ret = pci_enable_device(pdev);
+	ret = pcim_enable_device(pdev);
 	if (ret < 0)
 		return ret;
 
-	base = pci_iomap(pdev, 0, 0);
+	base = pcim_iomap(pdev, 0, 0);
 	if (!base)
 		return -ENOMEM;
 
-	pi = kmalloc(sizeof(*pi), GFP_ATOMIC);
+	pi = devm_kmalloc(&pdev->dev, sizeof(*pi), GFP_ATOMIC);
 	if (!pi)
 		return -ENOMEM;
 
@@ -107,9 +107,6 @@ static void pvpanic_pci_remove(struct pci_dev *pdev)
 	struct pvpanic_instance *pi = dev_get_drvdata(&pdev->dev);
 
 	pvpanic_remove(pi);
-	iounmap(pi->base);
-	kfree(pi);
-	pci_disable_device(pdev);
 }
 
 static struct pci_driver pvpanic_pci_driver = {
-- 
2.30.2