[PATCH] pciehp: miscellaneous cleanups

Remove un-necessary header includes, remove dead code, remove
some hardcoded constants...
Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/hotplug/pciehp.h

@@ -32,8 +32,6 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
-#include <asm/semaphore.h>
-#include <asm/io.h>		
 #include <linux/pcieport_if.h>
 #include "pci_hotplug.h"
 
@@ -62,13 +60,7 @@ struct slot {
 	u8 device;
 	u16 status;
 	u32 number;
-	u8 is_a_board;
-	u8 configured;
 	u8 state;
-	u8 switch_save;
-	u8 presence_save;
-	u32 capabilities;
-	u16 reserved2;
 	struct timer_list task_event;
 	u8 hp_slot;
 	struct controller *ctrl;
@@ -82,27 +74,42 @@ 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 semaphore crit_sect;	/* critical section semaphore */
-	void *hpc_ctlr_handle;		/* HPC controller handle */
+	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;
 	struct pci_bus *pci_bus;
-	struct event_info event_queue[10];
+	struct event_info event_queue[MAX_EVENTS];
 	struct slot *slot;
 	struct hpc_ops *hpc_ops;
 	wait_queue_head_t queue;	/* sleep & wake process */
 	u8 next_event;
-	u8 seg;
 	u8 bus;
 	u8 device;
 	u8 function;
-	u8 rev;
 	u8 slot_device_offset;
-	u8 add_support;
-	enum pci_bus_speed speed;
 	u32 first_slot;		/* First physical slot number */  /* PCIE only has 1 slot */
 	u8 slot_bus;		/* Bus where the slots handled by this controller sit */
 	u8 ctrlcap;
@@ -250,14 +257,7 @@ enum php_ctlr_type {
 	ACPI
 };
 
-typedef u8(*php_intr_callback_t) (unsigned int change_id, void *instance_id);
-
-int pcie_init(struct controller *ctrl, struct pcie_device *dev,
-		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);
-
+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,

drivers/pci/hotplug/pciehp_core.c

@@ -27,17 +27,11 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
 #include <linux/pci.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
 #include "pciehp.h"
 #include <linux/interrupt.h>
 
@@ -381,11 +375,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	pdev = dev->port;
 	ctrl->pci_dev = pdev;
 
-	rc = pcie_init(ctrl, dev,
-		(php_intr_callback_t) pciehp_handle_attention_button,
-		(php_intr_callback_t) pciehp_handle_switch_change,
-		(php_intr_callback_t) pciehp_handle_presence_change,
-		(php_intr_callback_t) pciehp_handle_power_fault);
+	rc = pcie_init(ctrl, dev);
 	if (rc) {
 		dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME);
 		goto err_out_free_ctrl;
@@ -421,8 +411,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	first_device_num = ctrl->slot_device_offset;
 	num_ctlr_slots = ctrl->num_slots; 
 
-	ctrl->add_support = 1;
-	
 	/* Setup the slot information structures */
 	rc = init_slots(ctrl);
 	if (rc) {

drivers/pci/hotplug/pciehp_ctrl.c

@@ -27,15 +27,9 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/wait.h>
 #include <linux/smp_lock.h>
 #include <linux/pci.h>
 #include "../pci.h"
@@ -64,10 +58,9 @@ u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id)
 	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
 	p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 
-	p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 	
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
+	ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
 	taskInfo->hp_slot = hp_slot;
 
 	rc++;
@@ -118,12 +111,11 @@ u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
 	 * what to do
 	 */
 	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
+	ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
 	taskInfo->hp_slot = hp_slot;
 
 	rc++;
 	p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
-	p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 
 	if (getstatus) {
@@ -131,14 +123,12 @@ u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id)
 		 * Switch opened
 		 */
 		info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		p_slot->switch_save = 0;
 		taskInfo->event_type = INT_SWITCH_OPEN;
 	} else {
 		/*
 		 *  Switch closed
 		 */
 		info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
-		p_slot->switch_save = 0x10;
 		taskInfo->event_type = INT_SWITCH_CLOSE;
 	}
 
@@ -152,7 +142,7 @@ u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
 {
 	struct controller *ctrl = (struct controller *) inst_id;
 	struct slot *p_slot;
-	u8 rc = 0;
+	u8 presence_save, rc = 0;
 	struct event_info *taskInfo;
 
 	/* Presence Change */
@@ -162,7 +152,7 @@ u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
 	 * what to do
 	 */
 	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
+	ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
 	taskInfo->hp_slot = hp_slot;
 
 	rc++;
@@ -171,8 +161,8 @@ u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id)
 	/* Switch is open, assume a presence change
 	 * Save the presence state
 	 */
-	p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
-	if (p_slot->presence_save) {
+	p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save);
+	if (presence_save) {
 		/*
 		 * Card Present
 		 */
@@ -206,7 +196,7 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
 	 * what to do
 	 */
 	taskInfo = &(ctrl->event_queue[ctrl->next_event]);
-	ctrl->next_event = (ctrl->next_event + 1) % 10;
+	ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS;
 	taskInfo->hp_slot = hp_slot;
 
 	rc++;
@@ -279,11 +269,10 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
  * Configures board
  *
  */
-static u32 board_added(struct slot *p_slot)
+static int board_added(struct slot *p_slot)
 {
 	u8 hp_slot;
-	u32 temp_register = 0xFFFFFFFF;
-	u32 rc = 0;
+	int rc = 0;
 	struct controller *ctrl = p_slot->ctrl;
 
 	hp_slot = p_slot->device - ctrl->slot_device_offset;
@@ -333,8 +322,6 @@ static u32 board_added(struct slot *p_slot)
 	/* Check for a power fault */
 	if (p_slot->status == 0xFF) {
 		/* power fault occurred, but it was benign */
-		temp_register = 0xFFFFFFFF;
-		dbg("%s: temp register set to %x by power fault\n", __FUNCTION__, temp_register);
 		rc = POWER_FAILURE;
 		p_slot->status = 0;
 		goto err_exit;
@@ -348,8 +335,6 @@ static u32 board_added(struct slot *p_slot)
 	}
 
 	p_slot->status = 0;
-	p_slot->switch_save = 0x10;
-	p_slot->is_a_board = 0x01;
 
 	/*
 	 * Some PCI Express root ports require fixup after hot-plug operation.
@@ -380,11 +365,11 @@ static u32 board_added(struct slot *p_slot)
  * remove_board - Turns off slot and LED's
  *
  */
-static u32 remove_board(struct slot *p_slot)
+static int remove_board(struct slot *p_slot)
 {
 	u8 device;
 	u8 hp_slot;
-	u32 rc;
+	int rc;
 	struct controller *ctrl = p_slot->ctrl;
 
 	if (pciehp_unconfigure_device(p_slot))
@@ -398,9 +383,7 @@ static u32 remove_board(struct slot *p_slot)
 	dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
 
 	/* Change status to shutdown */
-	if (p_slot->is_a_board)
-		p_slot->status = 0x01;
-	p_slot->configured = 0;
+	p_slot->status = 0x01;
 
 	/* Wait for exclusive access to hardware */
 	down(&ctrl->crit_sect);
@@ -428,9 +411,6 @@ static u32 remove_board(struct slot *p_slot)
 	/* Done with exclusive hardware access */
 	up(&ctrl->crit_sect);
 
-	p_slot->switch_save = 0x10;
-	p_slot->is_a_board = 0;
-
 	return 0;
 }
 
@@ -633,7 +613,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 	while (change) {
 		change = 0;
 
-		for (loop = 0; loop < 10; loop++) {
+		for (loop = 0; loop < MAX_EVENTS; loop++) {
 			if (ctrl->event_queue[loop].event_type != 0) {
 				hp_slot = ctrl->event_queue[loop].hp_slot;
 
@@ -816,21 +796,11 @@ int pciehp_enable_slot(struct slot *p_slot)
 	}
 	up(&p_slot->ctrl->crit_sect);
 
-	p_slot->configured = 0;
-	p_slot->is_a_board = 1;
-
-	/* We have to save the presence info for these slots */
-	p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
-	p_slot->switch_save = !getstatus? 0x10:0;
 
 	rc = board_added(p_slot);
 	if (rc) {
-		/* We have to save the presence info for these slots */
-		p_slot->hpc_ops->get_adapter_status(p_slot,
-				&(p_slot->presence_save));
 		p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
-		p_slot->switch_save = !getstatus? 0x10:0;
 	}
 
 	if (p_slot)

drivers/pci/hotplug/pciehp_hpc.c

@@ -27,16 +27,10 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
 #include <linux/pci.h>
-#include <asm/system.h>
 #include "../pci.h"
 #include "pciehp.h"
 
@@ -217,23 +211,6 @@ static int pcie_cap_base = 0;		/* Base of the PCI Express capability item struct
 #define MRL_STATE		0x0020
 #define PRSN_STATE		0x0040
 
-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 */
-};
-
-
 static spinlock_t hpc_event_lock;
 
 DEFINE_DBG_BUFFER		/* Debug string buffer for entire HPC defined here */
@@ -1248,12 +1225,7 @@ static struct hpc_ops pciehp_hpc_ops = {
 	.check_lnk_status		= hpc_check_lnk_status,
 };
 
-int pcie_init(struct controller * ctrl,
-	struct pcie_device *dev,
-	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)
+int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 {
 	struct php_ctlr_state_s *php_ctlr, *p;
 	void *instance_id = ctrl;
@@ -1362,10 +1334,10 @@ int pcie_init(struct controller * ctrl,
 	dbg("HPC interrupt = %d\n", php_ctlr->irq);
 
 	/* Save interrupt callback info */
-	php_ctlr->attention_button_callback = attention_button_callback;
-	php_ctlr->switch_change_callback = switch_change_callback;
-	php_ctlr->presence_change_callback = presence_change_callback;
-	php_ctlr->power_fault_callback = power_fault_callback;
+	php_ctlr->attention_button_callback = pciehp_handle_attention_button;
+	php_ctlr->switch_change_callback = pciehp_handle_switch_change;
+	php_ctlr->presence_change_callback = pciehp_handle_presence_change;
+	php_ctlr->power_fault_callback = pciehp_handle_power_fault;
 	php_ctlr->callback_instance_id = instance_id;
 
 	/* return PCI Controller Info */

drivers/pci/hotplug/pciehp_pci.c

@@ -27,13 +27,9 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
-#include <linux/proc_fs.h>
 #include <linux/pci.h>
 #include "../pci.h"
 #include "pciehp.h"

drivers/pci/hotplug/pciehprm_acpi.c

@@ -24,18 +24,12 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/pci.h>
-#include <linux/init.h>
 #include <linux/acpi.h>
-#include <linux/efi.h>
 #include <linux/pci-acpi.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/actypes.h>
 #include "pciehp.h"

drivers/pci/hotplug/pciehprm_nonacpi.c

@@ -27,25 +27,13 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/pci.h>
-#include <linux/init.h>
 #include <linux/slab.h>
-#include <asm/uaccess.h>
 #include "pciehp.h"
-#include "pciehprm_nonacpi.h"
-
-
-int pciehprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
-{
-
-	*sun = (u8) (ctrl->first_slot);
-	return 0;
-}
 
 void get_hp_params_from_firmware(struct pci_dev *dev,
 		struct hotplug_params *hpp)