[PATCH] korina: fix probing crash

[Florian Fainelli <florian@openwrt.org>]

From: Florian Fainelli <florian@openwrt.org>
Subject: [PATCH] korina: fix probing crash

This patch fixes the wrong retrieval of platform_data
which makes the driver crash on probe. Propagate error
if the platform_driver cannot use its data.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
diff --git a/drivers/net/korina.c b/drivers/net/korina.c
index e185763..b2a3949 100644
--- a/drivers/net/korina.c
+++ b/drivers/net/korina.c
@@ -1078,12 +1078,18 @@ static int korina_close(struct net_device *dev)
 
 static int korina_probe(struct platform_device *pdev)
 {
-	struct korina_device *bif = platform_get_drvdata(pdev);
+	struct korina_device *bif;
 	struct korina_private *lp;
 	struct net_device *dev;
 	struct resource *r;
 	int rc;
 
+	bif = (struct korina_device *)pdev->dev.platform_data;
+	if (!bif) {
+		printk(KERN_ERR DRV_NAME ": missing platform data\n");
+		return -ENODEV;
+	}
+
 	dev = alloc_etherdev(sizeof(struct korina_private));
 	if (!dev) {
 		printk(KERN_ERR DRV_NAME ": alloc_etherdev failed\n");