netdev - [PATCH 10/11] ibm_newemac: Call dev_set_drvdata() before tah

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Message-Id: <20071130054137.27959DDEE4@ozlabs.org>
Date:	Fri, 30 Nov 2007 16:40:34 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	<jgarzik@...ox.com>
CC:	<netdev@...r.kernel.org>, <linuxppc-dev@...abs.org>
Subject: [PATCH 10/11] ibm_newemac: Call dev_set_drvdata() before tah_reset()

From: Valentine Barshak <vbarshak@...mvista.com>

The patch moves dev_set_drvdata(&ofdev->dev, dev) up before tah_reset(ofdev)
is called to avoid a NULL pointer dereference, since tah_reset uses drvdata.

Signed-off-by: Valentine Barshak <vbarshak@...mvista.com>
Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---

diff -pruN linux-2.6.orig/drivers/net/ibm_newemac/tah.c linux-2.6/drivers/net/ibm_newemac/tah.c
--- linux-2.6.orig/drivers/net/ibm_newemac/tah.c	2007-11-23 21:27:57.000000000 +0300
+++ linux-2.6/drivers/net/ibm_newemac/tah.c	2007-11-23 21:35:12.000000000 +0300
@@ -116,13 +116,14 @@ static int __devinit tah_probe(struct of
 		goto err_free;
 	}
 
+	dev_set_drvdata(&ofdev->dev, dev);
+
 	/* Initialize TAH and enable IPv4 checksum verification, no TSO yet */
 	tah_reset(ofdev);
 
 	printk(KERN_INFO
 	       "TAH %s initialized\n", ofdev->node->full_name);
 	wmb();
-	dev_set_drvdata(&ofdev->dev, dev);
 
 	return 0;
 

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