[coreboot] [PATCH] v3: Fix one NULL pointer dereference, add code to debug another one.

[Carl-Daniel Hailfinger]

Fix one NULL pointer dereference, add code to debug another one.

Don't commit yet, I'd rather apply a fix for the NULL pointer
than just debugging it.

Signed-off-by: Carl-Daniel Hailfinger

Index: device/device.c
===================================================================
--- device/device.c	(Revision 630)
+++ device/device.c	(Arbeitskopie)
@@ -277,8 +277,9 @@
 {
    struct device *curdev;

-	printk(BIOS_SPEW, "%s: %s(%s) read_resources bus %d link: %d\n",
-	       __func__, bus->dev->dtsname, dev_path(bus->dev),
+	printk(BIOS_SPEW, "%s: bus->dev %p, bus->dev->dtsname %p, %s(%s) read_resources bus %d link: %d\n",
+	       __func__, bus->dev, bus->dev->dtsname,
+	       bus->dev->dtsname, dev_path(bus->dev),
           bus->secondary, bus->link);

/* Walk through all devices and find which resources they need. */
Index: device/pci_device.c
===================================================================
--- device/pci_device.c	(Revision 630)
+++ device/pci_device.c	(Arbeitskopie)
@@ -1101,7 +1101,7 @@
    	dev = pci_probe_dev(dev, bus, devfn);
    	printk(BIOS_SPEW,
    	       "PCI: pci_scan_bus pci_probe_dev returns dev %p(%s)\n",
-		       dev, dev->dtsname);
+		       dev, dev ? dev->dtsname : "None (not found)");

/* If this is not a multi function device, or the device is
    	 * not present don't waste time probing another function.