The return value of pci_enable_device() must be checked even in resume
callback:
  sound/pci/ca0106/ca0106_main.c:1779: warning: ignoring return value of ‘pci_enable_device’, declared with attribute warn_unused_result
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 
        pci_set_power_state(pci, PCI_D0);
        pci_restore_state(pci);
-       pci_enable_device(pci);
+
+       if (pci_enable_device(pci) < 0) {
+               snd_card_disconnect(card);
+               return -EIO;
+       }
+
        pci_set_master(pci);
 
        ca0106_init_chip(chip);