libata: handle pci_enable_device() failure while resuming

Handle pci_enable_device() failure while resuming.  This patch kills
the "ignoring return value of 'pci_enable_device'" warning message and
propagates __must_check through ata_pci_device_do_resume().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ca53d5a9c0c5..03b7a0051887 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1397,7 +1397,9 @@ static int ahci_pci_device_resume(struct pci_dev *pdev)
         void __iomem *mmio = host->mmio_base;
         int rc;
 
-        ata_pci_device_do_resume(pdev);
+        rc = ata_pci_device_do_resume(pdev);
+        if (rc)
+                return rc;
 
         if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
                 rc = ahci_reset_controller(mmio, pdev);