From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 14 Apr 2006 20:46:28 +0000 (-0400)
Subject: [PATCH] USB: net2280: set driver data before it is used
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9fb81ce63671f9743517f628dac935269f2581a9;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] USB: net2280: set driver data before it is used

This patch (as671) fixes a bug in the error pathway for the net2280
probe routine.  A failure during probe will cause the driver to call
pci_get_drvdata before the corresponding pci_set_drvdata has been set.
The patch also does a kzalloc conversion.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index b2d507f16b85..0b9293493957 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -2833,13 +2833,13 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* alloc, and start init */
-	dev = kmalloc (sizeof *dev, SLAB_KERNEL);
+	dev = kzalloc (sizeof *dev, SLAB_KERNEL);
 	if (dev == NULL){
 		retval = -ENOMEM;
 		goto done;
 	}
 
-	memset (dev, 0, sizeof *dev);
+	pci_set_drvdata (pdev, dev);
 	spin_lock_init (&dev->lock);
 	dev->pdev = pdev;
 	dev->gadget.ops = &net2280_ops;
@@ -2952,7 +2952,6 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
 	dev->chiprev = get_idx_reg (dev->regs, REG_CHIPREV) & 0xffff;
 
 	/* done */
-	pci_set_drvdata (pdev, dev);
 	INFO (dev, "%s\n", driver_desc);
 	INFO (dev, "irq %s, pci mem %p, chip rev %04x\n",
 			bufp, base, dev->chiprev);