PCIE: Make use of the previously split out pcie_init_enable_events() function

Make use of the previously split out pcie_init_enable_events() function
to reinitialize the hotplug hardware on resume from suspend, but only
when pciehp_force==1.  Otherwise behaviour is unmodified.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 74f4f7bc8db9..ae3fe318b8fd 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -514,6 +514,24 @@ static int pciehp_suspend (struct pcie_device *dev, pm_message_t state)
 static int pciehp_resume (struct pcie_device *dev)
 {
         printk("%s ENTRY\n", __FUNCTION__);
+        if (pciehp_force) {
+                struct pci_dev *pdev = dev->port;
+                struct controller *ctrl = pci_get_drvdata(pdev);
+                struct slot *t_slot;
+                u8 status;
+
+                /* reinitialize the chipset's event detection logic */
+                pcie_init_hardware(ctrl, dev);
+
+                t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
+
+                /* Check if slot is occupied */
+                t_slot->hpc_ops->get_adapter_status(t_slot, &status);
+                if (status)
+                        pciehp_enable_slot(t_slot);
+                else
+                        pciehp_disable_slot(t_slot);
+        }
         return 0;
 }
 #endif