NFC: nfcwilink: Use devm_kzalloc

devm_kzalloc allocates memory that is released when a driver detaches.
This patch uses devm_kzalloc for data that is allocated in the probe
function of a platform device and is only freed in the remove function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/nfc/nfcwilink.c b/drivers/nfc/nfcwilink.c
index 50b1ee4..c7c182d 100644 (file)
--- a/drivers/nfc/nfcwilink.c
+++ b/drivers/nfc/nfcwilink.c
@@ -526,7 +526,7 @@ static int nfcwilink_probe(struct platform_device *pdev)
 
        nfc_dev_dbg(&pdev->dev, "probe entry");
 
-       drv = kzalloc(sizeof(struct nfcwilink), GFP_KERNEL);
+       drv = devm_kzalloc(&pdev->dev, sizeof(struct nfcwilink), GFP_KERNEL);
        if (!drv) {
                rc = -ENOMEM;
                goto exit;
@@ -547,7 +547,7 @@ static int nfcwilink_probe(struct platform_device *pdev)
        if (!drv->ndev) {
                nfc_dev_err(&pdev->dev, "nci_allocate_device failed");
                rc = -ENOMEM;
-               goto free_exit;
+               goto exit;
        }
 
        nci_set_parent_dev(drv->ndev, &pdev->dev);
@@ -566,9 +566,6 @@ static int nfcwilink_probe(struct platform_device *pdev)
 free_dev_exit:
        nci_free_device(drv->ndev);
 
-free_exit:
-       kfree(drv);
-
 exit:
        return rc;
 }
@@ -588,8 +585,6 @@ static int nfcwilink_remove(struct platform_device *pdev)
        nci_unregister_device(ndev);
        nci_free_device(ndev);
 
-       kfree(drv);
-
        dev_set_drvdata(&pdev->dev, NULL);
 
        return 0;