pcmcia: do not load the pd6729 driver if io_base is NULL
authorKomuro <komurojun-mbn@nifty.com>
Fri, 23 Oct 2009 23:07:39 +0000 (08:07 +0900)
committerDominik Brodowski <linux@dominikbrodowski.net>
Sat, 24 Oct 2009 15:08:37 +0000 (17:08 +0200)
The CL-PD6729 chip in some docking station is not initialized properly
under Linux. In that case, do not load the pd6729 driver.

[Dominik Brodowski <linux@dominikbrodowski.net>: spelling fixes, check for NULL not 0]
Signed-off-by: Komuro <komurojun-mbn@nifty.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
drivers/pcmcia/pd6729.c

index 1c39d3438f20c3a8cd8a6a7ca386e0c862e2cc5c..70a33468bcd0b6851f2320578963b74a4df9ea96 100644 (file)
@@ -641,6 +641,12 @@ static int __devinit pd6729_pci_probe(struct pci_dev *dev,
        if ((ret = pci_enable_device(dev)))
                goto err_out_free_mem;
 
+       if (!pci_resource_start(dev, 0)) {
+               printk(KERN_INFO "pd6729: refusing to load the driver "
+                                "as the io_base is 0.\n");
+               goto err_out_free_mem;
+       }
+
        printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge "
                "at 0x%llx on irq %d\n",
                (unsigned long long)pci_resource_start(dev, 0), dev->irq);