[PATCH v8 01/20] usb: gadget: ci13xxx_pci: guard against devices without driver_data

[Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>]

Don't try to initialize devices that don't have driver_data assigned
to their pci ids.

Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
---
 drivers/usb/gadget/ci13xxx_pci.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/gadget/ci13xxx_pci.c b/drivers/usb/gadget/ci13xxx_pci.c
index c768441..f075ef3 100644
--- a/drivers/usb/gadget/ci13xxx_pci.c
+++ b/drivers/usb/gadget/ci13xxx_pci.c
@@ -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;
-- 
1.7.10

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