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>

drivers/pci/hotplug/pciehp.h

@@ -162,6 +162,8 @@ extern int pciehp_unconfigure_device(struct slot *p_slot);
 extern void pciehp_queue_pushbutton_work(struct work_struct *work);
 int pcie_init(struct controller *ctrl, struct pcie_device *dev);
 int pciehp_enable_slot(struct slot *p_slot);
+int pciehp_disable_slot(struct slot *p_slot);
+int pcie_init_hardware(struct controller *ctrl, struct pcie_device *dev);
 
 static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device)
 {

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

drivers/pci/hotplug/pciehp_ctrl.c

@@ -37,7 +37,6 @@
 #include "pciehp.h"
 
 static void interrupt_event_handler(struct work_struct *work);
-static int pciehp_disable_slot(struct slot *p_slot);
 
 static int queue_interrupt_event(struct slot *p_slot, u32 event_type)
 {