[PATCH v3 5/9] pci: Split out pci_dev lock/unlock and save/restore

Alex Williamson
2013-08-01T16:55:47Z

Only cosmetic changes to existing paths.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---
drivers/pci/pci.c | 52 +++++++++++++++++++++++++++++++++++-----------------
1 file changed, 35 insertions(+), 17 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index db90692..f6c757a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3378,22 +3378,46 @@ done:
return rc;
}

+static void pci_dev_lock(struct pci_dev *dev)
+{
+ pci_cfg_access_lock(dev);
+ /* block PM suspend, driver probe, etc. */
+ device_lock(&dev->dev);
+}
+
+static void pci_dev_unlock(struct pci_dev *dev)
+{
+ device_unlock(&dev->dev);
+ pci_cfg_access_unlock(dev);
+}
+
+static void pci_dev_save_and_disable(struct pci_dev *dev)
+{
+ pci_save_state(dev);
+ /*
+ * both INTx and MSI are disabled after the Interrupt Disable bit
+ * is set and the Bus Master bit is cleared.
+ */
+ pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE);
+}
+
+static void pci_dev_restore(struct pci_dev *dev)
+{
+ pci_restore_state(dev);
+}
+
static int pci_dev_reset(struct pci_dev *dev, int probe)
{
int rc;

- if (!probe) {
- pci_cfg_access_lock(dev);
- /* block PM suspend, driver probe, etc. */
- device_lock(&dev->dev);
- }
+ if (!probe)
+ pci_dev_lock(dev);

rc = __pci_dev_reset(dev, probe);

- if (!probe) {
- device_unlock(&dev->dev);
- pci_cfg_access_unlock(dev);
- }
+ if (!probe)
+ pci_dev_unlock(dev);
+
return rc;
}
/**
@@ -3484,17 +3508,11 @@ int pci_reset_function(struct pci_dev *dev)
if (rc)
return rc;

- pci_save_state(dev);
-
- /*
- * both INTx and MSI are disabled after the Interrupt Disable bit
- * is set and the Bus Master bit is cleared.
- */
- pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE);
+ pci_dev_save_and_disable(dev);

rc = pci_dev_reset(dev, 0);

- pci_restore_state(dev);
+ pci_dev_restore(dev);

return rc;
}