Call pci_enable_device() before looking at pci_dev.  Also, call
pci_disable_device() when releasing the device.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>