pciehp: remove unnecessary php_ctlr

The struct php_ctlr seems to be only for complicating codes. This
patch removes struct php_ctlr and related codes.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/hotplug/pciehp.h

@@ -70,30 +70,11 @@ struct event_info {
 	u8 hp_slot;
 };
 
-typedef u8(*php_intr_callback_t) (u8 hp_slot, void *instance_id);
-
-struct php_ctlr_state_s {
-	struct php_ctlr_state_s *pnext;
-	struct pci_dev *pci_dev;
-	unsigned int irq;
-	unsigned long flags;				/* spinlock's */
-	u32 slot_device_offset;
-	u32 num_slots;
-    	struct timer_list	int_poll_timer;		/* Added for poll event */
-	php_intr_callback_t 	attention_button_callback;
-	php_intr_callback_t 	switch_change_callback;
-	php_intr_callback_t 	presence_change_callback;
-	php_intr_callback_t 	power_fault_callback;
-	void 			*callback_instance_id;
-	struct ctrl_reg 	*creg;				/* Ptr to controller register space */
-};
-
 #define MAX_EVENTS		10
 struct controller {
 	struct controller *next;
 	struct mutex crit_sect;		/* critical section mutex */
 	struct mutex ctrl_lock;		/* controller lock */
-	struct php_ctlr_state_s *hpc_ctlr_handle; /* HPC controller handle */
 	int num_slots;			/* Number of slots on ctlr */
 	int slot_num_inc;		/* 1 or -1 */
 	struct pci_dev *pci_dev;
@@ -113,6 +94,7 @@ struct controller {
 	u8 ctrlcap;
 	u16 vendor_id;
 	u8 cap_base;
+	struct timer_list poll_timer;
 };
 
 #define INT_BUTTON_IGNORE		0
@@ -179,10 +161,10 @@ extern void	pciehp_event_stop_thread	(void);
 extern int	pciehp_enable_slot		(struct slot *slot);
 extern int	pciehp_disable_slot		(struct slot *slot);
 
-extern u8	pciehp_handle_attention_button	(u8 hp_slot, void *inst_id);
-extern u8	pciehp_handle_switch_change	(u8 hp_slot, void *inst_id);
-extern u8	pciehp_handle_presence_change	(u8 hp_slot, void *inst_id);
-extern u8	pciehp_handle_power_fault	(u8 hp_slot, void *inst_id);
+extern u8 pciehp_handle_attention_button(u8 hp_slot, struct controller *ctrl);
+extern u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl);
+extern u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl);
+extern u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
 /* extern void	long_delay (int delay); */
 
 /* pci functions */
@@ -229,21 +211,8 @@ static inline int wait_for_ctrl_irq(struct controller *ctrl)
 	return retval;
 }
 
-enum php_ctlr_type {
-	PCI,
-	ISA,
-	ACPI
-};
-
 int pcie_init(struct controller *ctrl, struct pcie_device *dev);
 
-/* This has no meaning for PCI Express, as there is only 1 slot per port */
-int pcie_get_ctlr_slot_config(struct controller *ctrl,
-		int *num_ctlr_slots,
-		int *first_device_num,
-		int *physical_slot_num,
-		u8 *ctrlcap);
-
 struct hpc_ops {
 	int	(*power_on_slot)	(struct slot *slot);
 	int	(*power_off_slot)	(struct slot *slot);

drivers/pci/hotplug/pciehp_core.c

@@ -187,33 +187,6 @@ static void cleanup_slots(struct controller *ctrl)
 	}
 }
 
-static int get_ctlr_slot_config(struct controller *ctrl)
-{
-	int num_ctlr_slots;		/* Not needed; PCI Express has 1 slot per port*/
-	int first_device_num;		/* Not needed */
-	int physical_slot_num;
-	u8 ctrlcap;			
-	int rc;
-
-	rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &ctrlcap);
-	if (rc) {
-		err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
-		return (-1);
-	}
-
-	ctrl->num_slots = num_ctlr_slots;	/* PCI Express has 1 slot per port */
-	ctrl->slot_device_offset = first_device_num;
-	ctrl->first_slot = physical_slot_num;
-	ctrl->ctrlcap = ctrlcap; 	
-
-	dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) ctrlcap(%x) for b:d (%x:%x)\n",
-		__FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, ctrlcap, 
-		ctrl->bus, ctrl->device);
-
-	return (0);
-}
-
-
 /*
  * set_attention_status - Turns the Amber LED for a slot on, off or blink
  */
@@ -352,8 +325,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	int rc;
 	struct controller *ctrl;
 	struct slot *t_slot;
-	int first_device_num = 0 ;	/* first PCI device number supported by this PCIE */  
-	int num_ctlr_slots;		/* number of slots supported by this HPC */
 	u8 value;
 	struct pci_dev *pdev;
 	
@@ -390,18 +361,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", __FUNCTION__,
 		ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
 
-	/*
-	 *	Save configuration headers for this and subordinate PCI buses
-	 */
-
-	rc = get_ctlr_slot_config(ctrl);
-	if (rc) {
-		err(msg_initialization_err, rc);
-		goto err_out_free_ctrl_bus;
-	}
-	first_device_num = ctrl->slot_device_offset;
-	num_ctlr_slots = ctrl->num_slots; 
-
 	/* Setup the slot information structures */
 	rc = init_slots(ctrl);
 	if (rc) {
@@ -409,7 +368,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 		goto err_out_free_ctrl_slot;
 	}
 
-	t_slot = pciehp_find_slot(ctrl, first_device_num);
+	t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
 
 	/*	Finish setting up the hot plug ctrl device */
 	ctrl->next_event = 0;
@@ -445,7 +404,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 
 err_out_free_ctrl_slot:
 	cleanup_slots(ctrl);
-err_out_free_ctrl_bus:
 	kfree(ctrl->pci_bus);
 err_out_unmap_mmio_region:
 	ctrl->hpc_ops->release_ctlr(ctrl);

drivers/pci/hotplug/pciehp_ctrl.c

@@ -48,9 +48,8 @@ static inline char *slot_name(struct slot *p_slot)
 	return p_slot->hotplug_slot->name;
 }
 
-u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id)
+u8 pciehp_handle_attention_button(u8 hp_slot, struct controller *ctrl)
 {
-	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
 	u8 rc = 0;
 	u8 getstatus;
@@ -101,9 +100,8 @@ u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id)
 
 }
 
-u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
+u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl)
 {
-	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
 	u8 rc = 0;
 	u8 getstatus;
@@ -143,9 +141,8 @@ u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
 	return rc;
 }
 
-u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
+u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl)
 {
-	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
 	u8 presence_save, rc = 0;
 	struct event_info *taskInfo;
@@ -187,9 +184,8 @@ u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
 	return rc;
 }
 
-u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
+u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl)
 {
-	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
 	u8 rc = 0;
 	struct event_info *taskInfo;