[PATCH] yenta oops fix

[linux-2.6-omap-h63xx.git] / drivers / pcmcia / yenta_socket.c

diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index f0997c36c9b714b9aaf3a675c6cfb27b96616cdd..2e43911b487631cb0653d8e4819695328a68b424 100644 (file)
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -1045,7 +1045,18 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i
 {
        struct yenta_socket *socket;
        int ret;
-       
+
+       /*
+        * If we failed to assign proper bus numbers for this cardbus
+        * controller during PCI probe, its subordinate pci_bus is NULL.
+        * Bail out if so.
+        */
+       if (!dev->subordinate) {
+               printk(KERN_ERROR "Yenta: no bus associated with %s!\n",
+                       pci_name(dev));
+               return -ENODEV;
+       }
+
        socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL);
        if (!socket)
                return -ENOMEM;