PCI: Fix device class print out
authorYinghai Lu <yinghai@kernel.org>
Sun, 19 Feb 2012 22:50:12 +0000 (14:50 -0800)
committerJesse Barnes <jbarnes@virtuousgeek.org>
Thu, 23 Feb 2012 20:05:59 +0000 (12:05 -0800)
Found debug print of class is shifted.

| pci 0000:f8:15.2: [8086:2b56] type 0 class 0x000600

Code is trying to print class with 6 digits, but use shifted class with
4 digits valid value as variable.

Change to original dev->class directly.

Also remove not needed calculating of local variable class, because it
will be updated after pci_fixup_device(pci_fixup_early...)

Also unify type print out when class and header is not matched.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
drivers/pci/probe.c

index 9f2ff8c..aa9b1de 100644 (file)
@@ -926,12 +926,10 @@ int pci_setup_device(struct pci_dev *dev)
 
        pci_read_config_dword(dev, PCI_CLASS_REVISION, &class);
        dev->revision = class & 0xff;
-       class >>= 8;                                /* upper 3 bytes */
-       dev->class = class;
-       class >>= 8;
+       dev->class = class >> 8;                    /* upper 3 bytes */
 
-       dev_printk(KERN_DEBUG, &dev->dev, "[%04x:%04x] type %d class %#08x\n",
-                  dev->vendor, dev->device, dev->hdr_type, class);
+       dev_printk(KERN_DEBUG, &dev->dev, "[%04x:%04x] type %02x class %#08x\n",
+                  dev->vendor, dev->device, dev->hdr_type, dev->class);
 
        /* need to have dev->class ready */
        dev->cfg_size = pci_cfg_space_size(dev);
@@ -1013,8 +1011,8 @@ int pci_setup_device(struct pci_dev *dev)
                return -EIO;
 
        bad:
-               dev_err(&dev->dev, "ignoring class %02x (doesn't match header "
-                       "type %02x)\n", class, dev->hdr_type);
+               dev_err(&dev->dev, "ignoring class %#08x (doesn't match header "
+                       "type %02x)\n", dev->class, dev->hdr_type);
                dev->class = PCI_CLASS_NOT_DEFINED;
        }