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PCI: cleanup Function Level Reset

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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>
This commit is contained in:
Yu Zhao
2009-06-13 15:52:13 +08:00
committed by Jesse Barnes
parent c465def6bf
commit 8c1c699fec
3 changed files with 84 additions and 82 deletions
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4
drivers/pci/iov.c
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@ -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);