usb: gadget: ci13xxx_pci: guard against devices without driver_data
authorAlexander Shishkin <alexander.shishkin@linux.intel.com>
Fri, 11 May 2012 14:25:40 +0000 (17:25 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 11 May 2012 23:35:38 +0000 (16:35 -0700)
Don't try to initialize devices that don't have driver_data assigned
to their pci ids.

Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/gadget/ci13xxx_pci.c

index c768441..f075ef3 100644 (file)
@@ -51,6 +51,11 @@ static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
        struct resource res[3];
        int retval = 0, nres = 2;
 
+       if (!driver) {
+               dev_err(&pdev->dev, "device doesn't provide driver data\n");
+               return -ENODEV;
+       }
+
        retval = pci_enable_device(pdev);
        if (retval)
                goto done;