[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>

7 files changed, 41 insertions, 133 deletions

diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 3e17e3d4dd65..314989a3a933 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/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,
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index be608563e8b6..701243ea5894 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/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) {
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index b60e4973289c..dcfbfffa17c6 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/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 @@ err_exit:
  * 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)
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index ef79ca1f38da..5358547f9ee1 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/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 */
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c
index 1d185c1bc77a..647673a7d224 100644
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/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"
diff --git a/drivers/pci/hotplug/pciehprm_acpi.c b/drivers/pci/hotplug/pciehprm_acpi.c
index c823cfa42eec..5d184582331e 100644
--- a/drivers/pci/hotplug/pciehprm_acpi.c
+++ b/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"
diff --git a/drivers/pci/hotplug/pciehprm_nonacpi.c b/drivers/pci/hotplug/pciehprm_nonacpi.c
index 32371cd19e34..6447642f78c5 100644
--- a/drivers/pci/hotplug/pciehprm_nonacpi.c
+++ b/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)