PCI: cleanup Function Level Reset

This patch enhances the FLR functions:
  1) remove disable_irq() so the shared IRQ won't be disabled.
  2) replace the 1s wait with 100, 200 and 400ms wait intervals
     for the Pending Transaction.
  3) replace mdelay() with msleep().
  4) add might_sleep().
  5) lock the device to prevent PM suspend from accessing the CSRs
     during the reset.
  6) coding style fixes.

Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index e87fe95da814..03c7706c0a09 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -110,7 +110,7 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
         }
 
         if (reset)
-                pci_execute_reset_function(virtfn);
+                __pci_reset_function(virtfn);
 
         pci_device_add(virtfn, virtfn->bus);
         mutex_unlock(&iov->dev->sriov->lock);
@@ -164,7 +164,7 @@ static void virtfn_remove(struct pci_dev *dev, int id, int reset)
 
         if (reset) {
                 device_release_driver(&virtfn->dev);
-                pci_execute_reset_function(virtfn);
+                __pci_reset_function(virtfn);
         }
 
         sprintf(buf, "virtfn%u", id);