misc/pvpanic-pci: Fix error handling in 'pvpanic_pci_probe()'

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@linux.intel.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/ab071b1f4ed6e1174f9199095fb16a58bb406090.1621665058.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/pvpanic/pvpanic-pci.c b/drivers/misc/pvpanic/pvpanic-pci.c
index 9ecc4e8..046ce4e 100644 (file)
--- 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 = {