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-rw-r--r--drivers/firewire/ohci.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 1c365b827815..922cd26b25e3 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -3545,6 +3545,13 @@ static int __devinit pci_probe(struct pci_dev *dev,
INIT_WORK(&ohci->bus_reset_work, bus_reset_work);
+ if (!(pci_resource_flags(dev, 0) & IORESOURCE_MEM) ||
+ pci_resource_len(dev, 0) < OHCI1394_REGISTER_SIZE) {
+ dev_err(&dev->dev, "invalid MMIO resource\n");
+ err = -ENXIO;
+ goto fail_disable;
+ }
+
err = pci_request_region(dev, 0, ohci_driver_name);
if (err) {
dev_err(&dev->dev, "MMIO resource unavailable\n");