gpio: bt8xx: use devm function for memory allocation

Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 6 insertions, 13 deletions

diff --git a/drivers/gpio/gpio-bt8xx.c b/drivers/gpio/gpio-bt8xx.c
index ecb3ca2d1d10..6557147d9331 100644
--- a/drivers/gpio/gpio-bt8xx.c
+++ b/drivers/gpio/gpio-bt8xx.c
@@ -178,7 +178,7 @@ static int bt8xxgpio_probe(struct pci_dev *dev,
         struct bt8xxgpio *bg;
         int err;
 
-        bg = kzalloc(sizeof(*bg), GFP_KERNEL);
+        bg = devm_kzalloc(&dev->dev, sizeof(struct bt8xxgpio), GFP_KERNEL);
         if (!bg)
                 return -ENOMEM;
 
@@ -188,9 +188,9 @@ static int bt8xxgpio_probe(struct pci_dev *dev,
         err = pci_enable_device(dev);
         if (err) {
                 printk(KERN_ERR "bt8xxgpio: Can't enable device.\n");
-                goto err_freebg;
+                return err;
         }
-        if (!request_mem_region(pci_resource_start(dev, 0),
+        if (!devm_request_mem_region(&dev->dev, pci_resource_start(dev, 0),
                                 pci_resource_len(dev, 0),
                                 "bt8xxgpio")) {
                 printk(KERN_WARNING "bt8xxgpio: Can't request iomem (0x%llx).\n",
@@ -201,11 +201,11 @@ static int bt8xxgpio_probe(struct pci_dev *dev,
         pci_set_master(dev);
         pci_set_drvdata(dev, bg);
 
-        bg->mmio = ioremap(pci_resource_start(dev, 0), 0x1000);
+        bg->mmio = devm_ioremap(&dev->dev, pci_resource_start(dev, 0), 0x1000);
         if (!bg->mmio) {
                 printk(KERN_ERR "bt8xxgpio: ioremap() failed\n");
                 err = -EIO;
-                goto err_release_mem;
+                goto err_disable;
         }
 
         /* Disable interrupts */
@@ -220,18 +220,13 @@ static int bt8xxgpio_probe(struct pci_dev *dev,
         err = gpiochip_add(&bg->gpio);
         if (err) {
                 printk(KERN_ERR "bt8xxgpio: Failed to register GPIOs\n");
-                goto err_release_mem;
+                goto err_disable;
         }
 
         return 0;
 
-err_release_mem:
-        release_mem_region(pci_resource_start(dev, 0),
-                           pci_resource_len(dev, 0));
 err_disable:
         pci_disable_device(dev);
-err_freebg:
-        kfree(bg);
 
         return err;
 }
@@ -250,8 +245,6 @@ static void bt8xxgpio_remove(struct pci_dev *pdev)
         release_mem_region(pci_resource_start(pdev, 0),
                            pci_resource_len(pdev, 0));
         pci_disable_device(pdev);
-
-        kfree(bg);
 }
 
 #ifdef CONFIG_PM