Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (37 commits) PCI: merge almost all of pci_32.h and pci_64.h together PCI: X86: Introduce and enable PCI domain support PCI: Add 'nodomains' boot option, and pci_domains_supported global PCI: modify PCI bridge control ISA flag for clarity PCI: use _CRS for PCI resource allocation PCI: avoid P2P prefetch window for expansion ROMs PCI: skip ISA ioresource alignment on some systems PCI: remove transparent bridge sizing pci: write file size to inode on proc bus file write pci: use size stored in proc_dir_entry for proc bus files pci: implement "pci=noaer" PCI: fix IDE legacy mode resources MSI: Use correct data offset for 32-bit MSI in read_msi_msg() PCI: Fix incorrect argument order to list_add_tail() in PCI dynamic ID code PCI: i386: Compaq EVO N800c needs PCI bus renumbering PCI: Remove no longer correct documentation regarding MSI vector assignment PCI: re-enable onboard sound on "MSI K8T Neo2-FIR" PCI: quirk_vt82c586_acpi: Omit reading PCI revision ID PCI: quirk amd_8131_mmrbc: Omit reading pci revision ID cpqphp: Use PCI_CLASS_REVISION instead of PCI_REVISION_ID for read ...
2007-10-12 15:50:23 -07:00
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -549,7 +549,7 @@ get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot)
 			 * slot. */
 			bus->number = tbus;
 			pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0),
-						PCI_REVISION_ID, &work);
+						PCI_CLASS_REVISION, &work);

 			if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
 				pci_bus_read_config_dword(bus,
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -37,6 +37,7 @@
 #include <linux/smp_lock.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
+#include <linux/kthread.h>
 #include "cpqphp.h"

 static u32 configure_new_device(struct controller* ctrl, struct pci_func *func,
@@ -45,34 +46,20 @@ static int configure_new_function(struct controller* ctrl, struct pci_func *func
 			u8 behind_bridge, struct resource_lists *resources);
 static void interrupt_event_handler(struct controller *ctrl);

-static struct semaphore event_semaphore;	/* mutex for process loop (up if something to process) */
-static struct semaphore event_exit;		/* guard ensure thread has exited before calling it quits */
-static int event_finished;
-static unsigned long pushbutton_pending;	/* = 0 */

-/* things needed for the long_delay function */
-static struct semaphore		delay_sem;
-static wait_queue_head_t	delay_wait;
+static struct task_struct *cpqhp_event_thread;
+static unsigned long pushbutton_pending;	/* = 0 */

 /* delay is in jiffies to wait for */
 static void long_delay(int delay)
 {
-	DECLARE_WAITQUEUE(wait, current);
-	
-	/* only allow 1 customer into the delay queue at once
-	 * yes this makes some people wait even longer, but who really cares?
-	 * this is for _huge_ delays to make the hardware happy as the 
-	 * signals bounce around
+	/*
+	 * XXX(hch): if someone is bored please convert all callers
+	 * to call msleep_interruptible directly.  They really want
+	 * to specify timeouts in natural units and spend a lot of
+	 * effort converting them to jiffies..
 	 */
-	down (&delay_sem);
-
-	init_waitqueue_head(&delay_wait);
-
-	add_wait_queue(&delay_wait, &wait);
 	msleep_interruptible(jiffies_to_msecs(delay));
-	remove_wait_queue(&delay_wait, &wait);
-	
-	up(&delay_sem);
 }


@@ -955,8 +942,8 @@ irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data)
 	}

 	if (schedule_flag) {
-		up(&event_semaphore);
-		dbg("Signal event_semaphore\n");
+		wake_up_process(cpqhp_event_thread);
+		dbg("Waking even thread");
 	}
 	return IRQ_HANDLED;
 }
@@ -973,16 +960,13 @@ struct pci_func *cpqhp_slot_create(u8 busnumber)
 	struct pci_func *new_slot;
 	struct pci_func *next;

-	new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
-
+	new_slot = kzalloc(sizeof(*new_slot), GFP_KERNEL);
 	if (new_slot == NULL) {
 		/* I'm not dead yet!
 		 * You will be. */
 		return new_slot;
 	}

-	memset(new_slot, 0, sizeof(struct pci_func));
-
 	new_slot->next = NULL;
 	new_slot->configured = 1;

@@ -1738,7 +1722,7 @@ static u32 remove_board(struct pci_func * func, u32 replace_flag, struct control
 static void pushbutton_helper_thread(unsigned long data)
 {
 	pushbutton_pending = data;
-	up(&event_semaphore);
+	wake_up_process(cpqhp_event_thread);
 }


@@ -1747,13 +1731,13 @@ static int event_thread(void* data)
 {
 	struct controller *ctrl;

-	daemonize("phpd_event");
-
 	while (1) {
 		dbg("!!!!event_thread sleeping\n");
-		down_interruptible (&event_semaphore);
-		dbg("event_thread woken finished = %d\n", event_finished);
-		if (event_finished) break;
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule();
+
+		if (kthread_should_stop())
+			break;
 		/* Do stuff here */
 		if (pushbutton_pending)
 			cpqhp_pushbutton_thread(pushbutton_pending);
@@ -1762,38 +1746,24 @@ static int event_thread(void* data)
 				interrupt_event_handler(ctrl);
 	}
 	dbg("event_thread signals exit\n");
-	up(&event_exit);
 	return 0;
 }

-
 int cpqhp_event_start_thread(void)
 {
-	int pid;
-
-	/* initialize our semaphores */
-	init_MUTEX(&delay_sem);
-	init_MUTEX_LOCKED(&event_semaphore);
-	init_MUTEX_LOCKED(&event_exit);
-	event_finished=0;
-
-	pid = kernel_thread(event_thread, NULL, 0);
-	if (pid < 0) {
+	cpqhp_event_thread = kthread_run(event_thread, NULL, "phpd_event");
+	if (IS_ERR(cpqhp_event_thread)) {
 		err ("Can't start up our event thread\n");
-		return -1;
+		return PTR_ERR(cpqhp_event_thread);
 	}
-	dbg("Our event thread pid = %d\n", pid);
+
 	return 0;
 }


 void cpqhp_event_stop_thread(void)
 {
-	event_finished = 1;
-	dbg("event_thread finish command given\n");
-	up(&event_semaphore);
-	dbg("wait for event_thread to exit\n");
-	down(&event_exit);
+	kthread_stop(cpqhp_event_thread);
 }


--- a/drivers/pci/hotplug/ibmphp_hpc.c
+++ b/drivers/pci/hotplug/ibmphp_hpc.c
@@ -35,7 +35,7 @@
 #include <linux/init.h>
 #include <linux/mutex.h>
 #include <linux/sched.h>
-
+#include <linux/kthread.h>
 #include "ibmphp.h"

 static int to_debug = 0;
@@ -101,12 +101,11 @@ static int to_debug = 0;
 //----------------------------------------------------------------------------
 // global variables
 //----------------------------------------------------------------------------
-static int ibmphp_shutdown;
-static int tid_poll;
 static struct mutex sem_hpcaccess;	// lock access to HPC
 static struct semaphore semOperations;	// lock all operations and
 					// access to data structures
 static struct semaphore sem_exit;	// make sure polling thread goes away
+static struct task_struct *ibmphp_poll_thread;
 //----------------------------------------------------------------------------
 // local function prototypes
 //----------------------------------------------------------------------------
@@ -116,10 +115,9 @@ static u8 hpc_writecmdtoindex (u8, u8);
 static u8 hpc_readcmdtoindex (u8, u8);
 static void get_hpc_access (void);
 static void free_hpc_access (void);
-static void poll_hpc (void);
+static int poll_hpc(void *data);
 static int process_changeinstatus (struct slot *, struct slot *);
 static int process_changeinlatch (u8, u8, struct controller *);
-static int hpc_poll_thread (void *);
 static int hpc_wait_ctlr_notworking (int, struct controller *, void __iomem *, u8 *);
 //----------------------------------------------------------------------------

@@ -137,8 +135,6 @@ void __init ibmphp_hpc_initvars (void)
 	init_MUTEX (&semOperations);
 	init_MUTEX_LOCKED (&sem_exit);
 	to_debug = 0;
-	ibmphp_shutdown = 0;
-	tid_poll = 0;

 	debug ("%s - Exit\n", __FUNCTION__);
 }
@@ -819,7 +815,7 @@ void ibmphp_unlock_operations (void)
 #define POLL_LATCH_REGISTER	0
 #define POLL_SLOTS		1
 #define POLL_SLEEP		2
-static void poll_hpc (void)
+static int poll_hpc(void *data)
 {
 	struct slot myslot;
 	struct slot *pslot = NULL;
@@ -833,10 +829,7 @@ static void poll_hpc (void)

 	debug ("%s - Entry\n", __FUNCTION__);

-	while (!ibmphp_shutdown) {
-		if (ibmphp_shutdown) 
-			break;
-		
+	while (!kthread_should_stop()) {
 		/* try to get the lock to do some kind of hardware access */
 		down (&semOperations);

@@ -896,7 +889,7 @@ static void poll_hpc (void)
 			up (&semOperations);
 			msleep(POLL_INTERVAL_SEC * 1000);

-			if (ibmphp_shutdown) 
+			if (kthread_should_stop())
 				break;
 			
 			down (&semOperations);
@@ -915,6 +908,7 @@ static void poll_hpc (void)
 	}
 	up (&sem_exit);
 	debug ("%s - Exit\n", __FUNCTION__);
+	return 0;
 }


@@ -1049,29 +1043,6 @@ static int process_changeinlatch (u8 old, u8 new, struct controller *ctrl)
 	return rc;
 }

-/*----------------------------------------------------------------------
-* Name:    hpc_poll_thread
-*
-* Action:  polling
-*
-* Return   0
-* Value:
-*---------------------------------------------------------------------*/
-static int hpc_poll_thread (void *data)
-{
-	debug ("%s - Entry\n", __FUNCTION__);
-
-	daemonize("hpc_poll");
-	allow_signal(SIGKILL);
-
-	poll_hpc ();
-
-	tid_poll = 0;
-	debug ("%s - Exit\n", __FUNCTION__);
-	return 0;
-}
-
-
 /*----------------------------------------------------------------------
 * Name:    ibmphp_hpc_start_poll_thread
 *
@@ -1079,18 +1050,14 @@ static int hpc_poll_thread (void *data)
 *---------------------------------------------------------------------*/
 int __init ibmphp_hpc_start_poll_thread (void)
 {
-	int rc = 0;
-
 	debug ("%s - Entry\n", __FUNCTION__);

-	tid_poll = kernel_thread (hpc_poll_thread, NULL, 0);
-	if (tid_poll < 0) {
+	ibmphp_poll_thread = kthread_run(poll_hpc, NULL, "hpc_poll");
+	if (IS_ERR(ibmphp_poll_thread)) {
 		err ("%s - Error, thread not started\n", __FUNCTION__);
-		rc = -1;
+		return PTR_ERR(ibmphp_poll_thread);
 	}
-
-	debug ("%s - Exit tid_poll[%d] rc[%d]\n", __FUNCTION__, tid_poll, rc);
-	return rc;
+	return 0;
 }

 /*----------------------------------------------------------------------
@@ -1102,7 +1069,7 @@ void __exit ibmphp_hpc_stop_poll_thread (void)
 {
 	debug ("%s - Entry\n", __FUNCTION__);

-	ibmphp_shutdown = 1;
+	kthread_stop(ibmphp_poll_thread);
 	debug ("before locking operations \n");
 	ibmphp_lock_operations ();
 	debug ("after locking operations \n");
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -304,8 +304,8 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);

 	hotplug_slot->info->attention_status = status;
-	
-	if (ATTN_LED(slot->ctrl->ctrlcap)) 
+
+	if (ATTN_LED(slot->ctrl->ctrlcap))
 		slot->hpc_ops->set_attention_status(slot, status);

 	return 0;
@@ -405,7 +405,7 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
 	int retval;

 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
-	
+
 	retval = slot->hpc_ops->get_max_bus_speed(slot, value);
 	if (retval < 0)
 		*value = PCI_SPEED_UNKNOWN;
@@ -419,7 +419,7 @@ static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
 	int retval;

 	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
-	
+
 	retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
 	if (retval < 0)
 		*value = PCI_SPEED_UNKNOWN;
@@ -434,7 +434,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	struct slot *t_slot;
 	u8 value;
 	struct pci_dev *pdev;
-	
+
 	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl) {
 		err("%s : out of memory\n", __FUNCTION__);
@@ -502,23 +502,23 @@ static void pciehp_remove (struct pcie_device *dev)
 #ifdef CONFIG_PM
 static int pciehp_suspend (struct pcie_device *dev, pm_message_t state)
 {
-	printk("%s ENTRY\n", __FUNCTION__);	
+	printk("%s ENTRY\n", __FUNCTION__);
 	return 0;
 }

 static int pciehp_resume (struct pcie_device *dev)
 {
-	printk("%s ENTRY\n", __FUNCTION__);	
+	printk("%s ENTRY\n", __FUNCTION__);
 	return 0;
 }
 #endif

-static struct pcie_port_service_id port_pci_ids[] = { { 
-	.vendor = PCI_ANY_ID, 
+static struct pcie_port_service_id port_pci_ids[] = { {
+	.vendor = PCI_ANY_ID,
 	.device = PCI_ANY_ID,
 	.port_type = PCIE_ANY_PORT,
 	.service_type = PCIE_PORT_SERVICE_HP,
-	.driver_data =	0, 
+	.driver_data =	0,
 	}, { /* end: all zeroes */ }
 };
 static const char device_name[] = "hpdriver";
@@ -540,10 +540,6 @@ static int __init pcied_init(void)
 {
 	int retval = 0;

-#ifdef CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE
-	pciehp_poll_mode = 1;
-#endif
-
 	retval = pcie_port_service_register(&hpdriver_portdrv);
 	dbg("pcie_port_service_register = %d\n", retval);
  	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -173,7 +173,7 @@ u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl)
 	return 1;
 }

-/* The following routines constitute the bulk of the 
+/* The following routines constitute the bulk of the
   hotplug controller logic
 */

@@ -181,7 +181,7 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 {
 	/* turn off slot, turn on Amber LED, turn off Green LED if supported*/
 	if (POWER_CTRL(ctrl->ctrlcap)) {
-		if (pslot->hpc_ops->power_off_slot(pslot)) {   
+		if (pslot->hpc_ops->power_off_slot(pslot)) {
 			err("%s: Issue of Slot Power Off command failed\n",
 			    __FUNCTION__);
 			return;
@@ -189,7 +189,7 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 	}

 	if (PWR_LED(ctrl->ctrlcap))
-		pslot->hpc_ops->green_led_off(pslot);   
+		pslot->hpc_ops->green_led_off(pslot);

 	if (ATTN_LED(ctrl->ctrlcap)) {
 		if (pslot->hpc_ops->set_attention_status(pslot, 1)) {
@@ -231,7 +231,7 @@ static int board_added(struct slot *p_slot)
 		if (retval)
 			return retval;
 	}
-	
+
 	if (PWR_LED(ctrl->ctrlcap))
 		p_slot->hpc_ops->green_led_blink(p_slot);

@@ -548,7 +548,7 @@ int pciehp_enable_slot(struct slot *p_slot)
 		mutex_unlock(&p_slot->ctrl->crit_sect);
 		return -ENODEV;
 	}
-	if (MRL_SENS(p_slot->ctrl->ctrlcap)) {	
+	if (MRL_SENS(p_slot->ctrl->ctrlcap)) {
 		rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (rc || getstatus) {
 			info("%s: latch open on slot(%s)\n", __FUNCTION__,
@@ -557,8 +557,8 @@ int pciehp_enable_slot(struct slot *p_slot)
 			return -ENODEV;
 		}
 	}
-	
-	if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {	
+
+	if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {
 		rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (rc || getstatus) {
 			info("%s: already enabled on slot(%s)\n", __FUNCTION__,
@@ -593,7 +593,7 @@ int pciehp_disable_slot(struct slot *p_slot)
 	/* Check to see if (latch closed, card present, power on) */
 	mutex_lock(&p_slot->ctrl->crit_sect);

-	if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) {	
+	if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) {
 		ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
 			info("%s: no adapter on slot(%s)\n", __FUNCTION__,
@@ -603,7 +603,7 @@ int pciehp_disable_slot(struct slot *p_slot)
 		}
 	}

-	if (MRL_SENS(p_slot->ctrl->ctrlcap)) {	
+	if (MRL_SENS(p_slot->ctrl->ctrlcap)) {
 		ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (ret || getstatus) {
 			info("%s: latch open on slot(%s)\n", __FUNCTION__,
@@ -613,7 +613,7 @@ int pciehp_disable_slot(struct slot *p_slot)
 		}
 	}

-	if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {	
+	if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {
 		ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
 			info("%s: already disabled slot(%s)\n", __FUNCTION__,
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -39,37 +39,6 @@

 #include "../pci.h"
 #include "pciehp.h"
-#ifdef DEBUG
-#define DBG_K_TRACE_ENTRY      ((unsigned int)0x00000001)	/* On function entry */
-#define DBG_K_TRACE_EXIT       ((unsigned int)0x00000002)	/* On function exit */
-#define DBG_K_INFO             ((unsigned int)0x00000004)	/* Info messages */
-#define DBG_K_ERROR            ((unsigned int)0x00000008)	/* Error messages */
-#define DBG_K_TRACE            (DBG_K_TRACE_ENTRY|DBG_K_TRACE_EXIT)
-#define DBG_K_STANDARD         (DBG_K_INFO|DBG_K_ERROR|DBG_K_TRACE)
-/* Redefine this flagword to set debug level */
-#define DEBUG_LEVEL            DBG_K_STANDARD
-
-#define DEFINE_DBG_BUFFER     char __dbg_str_buf[256];
-
-#define DBG_PRINT( dbg_flags, args... )              \
-	do {                                             \
-	  if ( DEBUG_LEVEL & ( dbg_flags ) )             \
-	  {                                              \
-	    int len;                                     \
-	    len = sprintf( __dbg_str_buf, "%s:%d: %s: ", \
-		  __FILE__, __LINE__, __FUNCTION__ );    \
-	    sprintf( __dbg_str_buf + len, args );        \
-	    printk( KERN_NOTICE "%s\n", __dbg_str_buf ); \
-	  }                                              \
-	} while (0)
-
-#define DBG_ENTER_ROUTINE	DBG_PRINT (DBG_K_TRACE_ENTRY, "%s", "[Entry]");
-#define DBG_LEAVE_ROUTINE	DBG_PRINT (DBG_K_TRACE_EXIT, "%s", "[Exit]");
-#else
-#define DEFINE_DBG_BUFFER
-#define DBG_ENTER_ROUTINE
-#define DBG_LEAVE_ROUTINE
-#endif				/* DEBUG */

 static atomic_t pciehp_num_controllers = ATOMIC_INIT(0);

@@ -160,10 +129,10 @@ static inline int pciehp_writel(struct controller *ctrl, int reg, u32 value)
 /* Link Width Encoding */
 #define LNK_X1		0x01
 #define LNK_X2		0x02
-#define LNK_X4		0x04	
+#define LNK_X4		0x04
 #define LNK_X8		0x08
 #define LNK_X12		0x0C
-#define LNK_X16		0x10	
+#define LNK_X16		0x10
 #define LNK_X32		0x20

 /*Field definitions of Link Status Register */
@@ -221,8 +190,6 @@ static inline int pciehp_writel(struct controller *ctrl, int reg, u32 value)
 #define EMI_STATE		0x0080
 #define EMI_STATUS_BIT		7

-DEFINE_DBG_BUFFER		/* Debug string buffer for entire HPC defined here */
-
 static irqreturn_t pcie_isr(int irq, void *dev_id);
 static void start_int_poll_timer(struct controller *ctrl, int sec);

@@ -231,14 +198,12 @@ static void int_poll_timeout(unsigned long data)
 {
 	struct controller *ctrl = (struct controller *)data;

-	DBG_ENTER_ROUTINE
-
 	/* Poll for interrupt events.  regs == NULL => polling */
 	pcie_isr(0, ctrl);

 	init_timer(&ctrl->poll_timer);
 	if (!pciehp_poll_time)
-		pciehp_poll_time = 2; /* reset timer to poll in 2 secs if user doesn't specify at module installation*/
+		pciehp_poll_time = 2; /* default polling interval is 2 sec */

 	start_int_poll_timer(ctrl, pciehp_poll_time);
 }
@@ -289,8 +254,6 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd, u16 mask)
 	u16 slot_ctrl;
 	unsigned long flags;

-	DBG_ENTER_ROUTINE 
-
 	mutex_lock(&ctrl->ctrl_lock);

 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
@@ -299,7 +262,7 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd, u16 mask)
 		goto out;
 	}

-	if ((slot_status & CMD_COMPLETED) == CMD_COMPLETED ) { 
+	if ((slot_status & CMD_COMPLETED) == CMD_COMPLETED ) {
 		/* After 1 sec and CMD_COMPLETED still not set, just
 		   proceed forward to issue the next command according
 		   to spec.  Just print out the error message */
@@ -332,7 +295,6 @@ static int pcie_write_cmd(struct slot *slot, u16 cmd, u16 mask)
 		retval = pcie_wait_cmd(ctrl);
 out:
 	mutex_unlock(&ctrl->ctrl_lock);
-	DBG_LEAVE_ROUTINE 
 	return retval;
 }

@@ -341,8 +303,6 @@ static int hpc_check_lnk_status(struct controller *ctrl)
 	u16 lnk_status;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
 	if (retval) {
 		err("%s: Cannot read LNKSTATUS register\n", __FUNCTION__);
@@ -350,26 +310,22 @@ static int hpc_check_lnk_status(struct controller *ctrl)
 	}

 	dbg("%s: lnk_status = %x\n", __FUNCTION__, lnk_status);
-	if ( (lnk_status & LNK_TRN) || (lnk_status & LNK_TRN_ERR) || 
+	if ( (lnk_status & LNK_TRN) || (lnk_status & LNK_TRN_ERR) ||
 		!(lnk_status & NEG_LINK_WD)) {
 		err("%s : Link Training Error occurs \n", __FUNCTION__);
 		retval = -1;
 		return retval;
 	}

-	DBG_LEAVE_ROUTINE 
 	return retval;
 }

-
 static int hpc_get_attention_status(struct slot *slot, u8 *status)
 {
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_ctrl;
 	u8 atten_led_state;
 	int retval = 0;
-	
-	DBG_ENTER_ROUTINE 

 	retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
 	if (retval) {
@@ -400,7 +356,6 @@ static int hpc_get_attention_status(struct slot *slot, u8 *status)
 		break;
 	}

-	DBG_LEAVE_ROUTINE 
 	return 0;
 }

@@ -410,8 +365,6 @@ static int hpc_get_power_status(struct slot *slot, u8 *status)
 	u16 slot_ctrl;
 	u8 pwr_state;
 	int	retval = 0;
-	
-	DBG_ENTER_ROUTINE 

 	retval = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
 	if (retval) {
@@ -428,35 +381,30 @@ static int hpc_get_power_status(struct slot *slot, u8 *status)
 		*status = 1;
 		break;
 	case 1:
-		*status = 0;	
+		*status = 0;
 		break;
 	default:
 		*status = 0xFF;
 		break;
 	}

-	DBG_LEAVE_ROUTINE 
 	return retval;
 }

-
 static int hpc_get_latch_status(struct slot *slot, u8 *status)
 {
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_status;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (retval) {
 		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
 		return retval;
 	}

-	*status = (((slot_status & MRL_STATE) >> 5) == 0) ? 0 : 1;  
+	*status = (((slot_status & MRL_STATE) >> 5) == 0) ? 0 : 1;

-	DBG_LEAVE_ROUTINE 
 	return 0;
 }

@@ -467,8 +415,6 @@ static int hpc_get_adapter_status(struct slot *slot, u8 *status)
 	u8 card_state;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (retval) {
 		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
@@ -477,7 +423,6 @@ static int hpc_get_adapter_status(struct slot *slot, u8 *status)
 	card_state = (u8)((slot_status & PRSN_STATE) >> 6);
 	*status = (card_state == 1) ? 1 : 0;

-	DBG_LEAVE_ROUTINE 
 	return 0;
 }

@@ -488,16 +433,13 @@ static int hpc_query_power_fault(struct slot *slot)
 	u8 pwr_fault;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (retval) {
 		err("%s: Cannot check for power fault\n", __FUNCTION__);
 		return retval;
 	}
 	pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
-	
-	DBG_LEAVE_ROUTINE
+
 	return pwr_fault;
 }

@@ -507,8 +449,6 @@ static int hpc_get_emi_status(struct slot *slot, u8 *status)
 	u16 slot_status;
 	int retval = 0;

-	DBG_ENTER_ROUTINE
-
 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (retval) {
 		err("%s : Cannot check EMI status\n", __FUNCTION__);
@@ -516,7 +456,6 @@ static int hpc_get_emi_status(struct slot *slot, u8 *status)
 	}
 	*status = (slot_status & EMI_STATE) >> EMI_STATUS_BIT;

-	DBG_LEAVE_ROUTINE
 	return retval;
 }

@@ -526,8 +465,6 @@ static int hpc_toggle_emi(struct slot *slot)
 	u16 cmd_mask;
 	int rc;

-	DBG_ENTER_ROUTINE
-
 	slot_cmd = EMI_CTRL;
 	cmd_mask = EMI_CTRL;
 	if (!pciehp_poll_mode) {
@@ -537,7 +474,7 @@ static int hpc_toggle_emi(struct slot *slot)

 	rc = pcie_write_cmd(slot, slot_cmd, cmd_mask);
 	slot->last_emi_toggle = get_seconds();
-	DBG_LEAVE_ROUTINE
+
 	return rc;
 }

@@ -548,8 +485,6 @@ static int hpc_set_attention_status(struct slot *slot, u8 value)
 	u16 cmd_mask;
 	int rc;

-	DBG_ENTER_ROUTINE
-
 	cmd_mask = ATTN_LED_CTRL;
 	switch (value) {
 		case 0 :	/* turn off */
@@ -572,19 +507,15 @@ static int hpc_set_attention_status(struct slot *slot, u8 value)
 	rc = pcie_write_cmd(slot, slot_cmd, cmd_mask);
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
-	
-	DBG_LEAVE_ROUTINE
+
 	return rc;
 }

-
 static void hpc_set_green_led_on(struct slot *slot)
 {
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_cmd;
 	u16 cmd_mask;
-       	
-	DBG_ENTER_ROUTINE

 	slot_cmd = 0x0100;
 	cmd_mask = PWR_LED_CTRL;
@@ -597,8 +528,6 @@ static void hpc_set_green_led_on(struct slot *slot)

 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
-	DBG_LEAVE_ROUTINE
-	return;
 }

 static void hpc_set_green_led_off(struct slot *slot)
@@ -607,8 +536,6 @@ static void hpc_set_green_led_off(struct slot *slot)
 	u16 slot_cmd;
 	u16 cmd_mask;

-	DBG_ENTER_ROUTINE
-
 	slot_cmd = 0x0300;
 	cmd_mask = PWR_LED_CTRL;
 	if (!pciehp_poll_mode) {
@@ -619,9 +546,6 @@ static void hpc_set_green_led_off(struct slot *slot)
 	pcie_write_cmd(slot, slot_cmd, cmd_mask);
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
-
-	DBG_LEAVE_ROUTINE
-	return;
 }

 static void hpc_set_green_led_blink(struct slot *slot)
@@ -629,8 +553,6 @@ static void hpc_set_green_led_blink(struct slot *slot)
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_cmd;
 	u16 cmd_mask;
-	
-	DBG_ENTER_ROUTINE

 	slot_cmd = 0x0200;
 	cmd_mask = PWR_LED_CTRL;
@@ -643,14 +565,10 @@ static void hpc_set_green_led_blink(struct slot *slot)

 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
-	DBG_LEAVE_ROUTINE
-	return;
 }

 static void hpc_release_ctlr(struct controller *ctrl)
 {
-	DBG_ENTER_ROUTINE 
-
 	if (pciehp_poll_mode)
 		del_timer(&ctrl->poll_timer);
 	else
@@ -662,8 +580,6 @@ static void hpc_release_ctlr(struct controller *ctrl)
 	 */
 	if (atomic_dec_and_test(&pciehp_num_controllers))
 		destroy_workqueue(pciehp_wq);
-
-	DBG_LEAVE_ROUTINE
 }

 static int hpc_power_on_slot(struct slot * slot)
@@ -674,8 +590,6 @@ static int hpc_power_on_slot(struct slot * slot)
 	u16 slot_status;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	dbg("%s: slot->hp_slot %x\n", __FUNCTION__, slot->hp_slot);

 	/* Clear sticky power-fault bit from previous power failures */
@@ -719,8 +633,6 @@ static int hpc_power_on_slot(struct slot * slot)
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);

-	DBG_LEAVE_ROUTINE
-
 	return retval;
 }

@@ -731,8 +643,6 @@ static int hpc_power_off_slot(struct slot * slot)
 	u16 cmd_mask;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	dbg("%s: slot->hp_slot %x\n", __FUNCTION__, slot->hp_slot);

 	slot_cmd = POWER_OFF;
@@ -764,8 +674,6 @@ static int hpc_power_off_slot(struct slot * slot)
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);

-	DBG_LEAVE_ROUTINE
-
 	return retval;
 }

@@ -784,8 +692,8 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
 		return IRQ_NONE;
 	}

-	intr_detect = ( ATTN_BUTTN_PRESSED | PWR_FAULT_DETECTED | MRL_SENS_CHANGED |
-					PRSN_DETECT_CHANGED | CMD_COMPLETED );
+	intr_detect = (ATTN_BUTTN_PRESSED | PWR_FAULT_DETECTED |
+		       MRL_SENS_CHANGED | PRSN_DETECT_CHANGED | CMD_COMPLETED);

 	intr_loc = slot_status & intr_detect;

@@ -807,7 +715,8 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)

 		dbg("%s: pciehp_readw(SLOTCTRL) with value %x\n",
 		    __FUNCTION__, temp_word);
-		temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) | 0x00;
+		temp_word = (temp_word & ~HP_INTR_ENABLE &
+			     ~CMD_CMPL_INTR_ENABLE) | 0x00;
 		rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
 		if (rc) {
 			err("%s: Cannot write to SLOTCTRL register\n",
@@ -825,7 +734,7 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
 		}
 		dbg("%s: pciehp_readw(SLOTSTATUS) with value %x\n",
 		    __FUNCTION__, slot_status);
-		
+
 		/* Clear command complete interrupt caused by this write */
 		temp_word = 0x1f;
 		rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
@@ -835,10 +744,10 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
 			return IRQ_NONE;
 		}
 	}
-	
+
 	if (intr_loc & CMD_COMPLETED) {
-		/* 
-		 * Command Complete Interrupt Pending 
+		/*
+		 * Command Complete Interrupt Pending
 		 */
 		ctrl->cmd_busy = 0;
 		wake_up_interruptible(&ctrl->queue);
@@ -892,7 +801,7 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
 			    __FUNCTION__);
 			return IRQ_NONE;
 		}
-		
+
 		/* Clear command complete interrupt caused by this write */
 		temp_word = 0x1F;
 		rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
@@ -904,19 +813,17 @@ static irqreturn_t pcie_isr(int irq, void *dev_id)
 		dbg("%s: pciehp_writew(SLOTSTATUS) with value %x\n",
 		    __FUNCTION__, temp_word);
 	}
-	
+
 	return IRQ_HANDLED;
 }

-static int hpc_get_max_lnk_speed (struct slot *slot, enum pci_bus_speed *value)
+static int hpc_get_max_lnk_speed(struct slot *slot, enum pci_bus_speed *value)
 {
 	struct controller *ctrl = slot->ctrl;
 	enum pcie_link_speed lnk_speed;
 	u32	lnk_cap;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readl(ctrl, LNKCAP, &lnk_cap);
 	if (retval) {
 		err("%s: Cannot read LNKCAP register\n", __FUNCTION__);
@@ -934,19 +841,18 @@ static int hpc_get_max_lnk_speed (struct slot *slot, enum pci_bus_speed *value)

 	*value = lnk_speed;
 	dbg("Max link speed = %d\n", lnk_speed);
-	DBG_LEAVE_ROUTINE 
+
 	return retval;
 }

-static int hpc_get_max_lnk_width (struct slot *slot, enum pcie_link_width *value)
+static int hpc_get_max_lnk_width(struct slot *slot,
+				 enum pcie_link_width *value)
 {
 	struct controller *ctrl = slot->ctrl;
 	enum pcie_link_width lnk_wdth;
 	u32	lnk_cap;
 	int retval = 0;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readl(ctrl, LNKCAP, &lnk_cap);
 	if (retval) {
 		err("%s: Cannot read LNKCAP register\n", __FUNCTION__);
@@ -985,19 +891,17 @@ static int hpc_get_max_lnk_width (struct slot *slot, enum pcie_link_width *value

 	*value = lnk_wdth;
 	dbg("Max link width = %d\n", lnk_wdth);
-	DBG_LEAVE_ROUTINE 
+
 	return retval;
 }

-static int hpc_get_cur_lnk_speed (struct slot *slot, enum pci_bus_speed *value)
+static int hpc_get_cur_lnk_speed(struct slot *slot, enum pci_bus_speed *value)
 {
 	struct controller *ctrl = slot->ctrl;
 	enum pcie_link_speed lnk_speed = PCI_SPEED_UNKNOWN;
 	int retval = 0;
 	u16 lnk_status;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
 	if (retval) {
 		err("%s: Cannot read LNKSTATUS register\n", __FUNCTION__);
@@ -1015,25 +919,24 @@ static int hpc_get_cur_lnk_speed (struct slot *slot, enum pci_bus_speed *value)

 	*value = lnk_speed;
 	dbg("Current link speed = %d\n", lnk_speed);
-	DBG_LEAVE_ROUTINE 
+
 	return retval;
 }

-static int hpc_get_cur_lnk_width (struct slot *slot, enum pcie_link_width *value)
+static int hpc_get_cur_lnk_width(struct slot *slot,
+				 enum pcie_link_width *value)
 {
 	struct controller *ctrl = slot->ctrl;
 	enum pcie_link_width lnk_wdth = PCIE_LNK_WIDTH_UNKNOWN;
 	int retval = 0;
 	u16 lnk_status;

-	DBG_ENTER_ROUTINE 
-
 	retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
 	if (retval) {
 		err("%s: Cannot read LNKSTATUS register\n", __FUNCTION__);
 		return retval;
 	}
-	
+
 	switch ((lnk_status & 0x03F0) >> 4){
 	case 0:
 		lnk_wdth = PCIE_LNK_WIDTH_RESRV;
@@ -1066,7 +969,7 @@ static int hpc_get_cur_lnk_width (struct slot *slot, enum pcie_link_width *value

 	*value = lnk_wdth;
 	dbg("Current link width = %d\n", lnk_wdth);
-	DBG_LEAVE_ROUTINE 
+
 	return retval;
 }

@@ -1085,12 +988,12 @@ static struct hpc_ops pciehp_hpc_ops = {
 	.get_cur_bus_speed		= hpc_get_cur_lnk_speed,
 	.get_max_lnk_width		= hpc_get_max_lnk_width,
 	.get_cur_lnk_width		= hpc_get_cur_lnk_width,
-	
+
 	.query_power_fault		= hpc_query_power_fault,
 	.green_led_on			= hpc_set_green_led_on,
 	.green_led_off			= hpc_set_green_led_off,
 	.green_led_blink		= hpc_set_green_led_blink,
-	
+
 	.release_ctlr			= hpc_release_ctlr,
 	.check_lnk_status		= hpc_check_lnk_status,
 };
@@ -1138,6 +1041,7 @@ int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
 		dbg("Trying to get hotplug control for %s \n",
 			(char *)string.pointer);
 		status = pci_osc_control_set(handle,
+				OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL |
 				OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
 		if (status == AE_NOT_FOUND)
 			status = acpi_run_oshp(handle);
@@ -1163,8 +1067,6 @@ int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
 }
 #endif

-
-
 int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 {
 	int rc;
@@ -1176,8 +1078,6 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	u16 slot_status, slot_ctrl;
 	struct pci_dev *pdev;

-	DBG_ENTER_ROUTINE
-	
 	pdev = dev->port;
 	ctrl->pci_dev = pdev;	/* save pci_dev in context */

@@ -1201,9 +1101,11 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	dbg("%s: CAPREG offset %x cap_reg %x\n",
 	    __FUNCTION__, ctrl->cap_base + CAPREG, cap_reg);

-	if (((cap_reg & SLOT_IMPL) == 0) || (((cap_reg & DEV_PORT_TYPE) != 0x0040)
+	if (((cap_reg & SLOT_IMPL) == 0) ||
+	    (((cap_reg & DEV_PORT_TYPE) != 0x0040)
 		&& ((cap_reg & DEV_PORT_TYPE) != 0x0060))) {
-		dbg("%s : This is not a root port or the port is not connected to a slot\n", __FUNCTION__);
+		dbg("%s : This is not a root port or the port is not "
+		    "connected to a slot\n", __FUNCTION__);
 		goto abort_free_ctlr;
 	}

@@ -1236,14 +1138,15 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	dbg("%s: SLOTCTRL offset %x slot_ctrl %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_ctrl);

-	for ( rc = 0; rc < DEVICE_COUNT_RESOURCE; rc++)
+	for (rc = 0; rc < DEVICE_COUNT_RESOURCE; rc++)
 		if (pci_resource_len(pdev, rc) > 0)
 			dbg("pci resource[%d] start=0x%llx(len=0x%llx)\n", rc,
 			    (unsigned long long)pci_resource_start(pdev, rc),
 			    (unsigned long long)pci_resource_len(pdev, rc));

-	info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n", pdev->vendor, pdev->device, 
-		pdev->subsystem_vendor, pdev->subsystem_device);
+	info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n",
+	     pdev->vendor, pdev->device,
+	     pdev->subsystem_vendor, pdev->subsystem_device);

 	mutex_init(&ctrl->crit_sect);
 	mutex_init(&ctrl->ctrl_lock);
@@ -1267,7 +1170,8 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)

 	dbg("%s: SLOTCTRL %x value read %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, temp_word);
-	temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) | 0x00;
+	temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) |
+		0x00;

 	rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
 	if (rc) {
@@ -1330,14 +1234,14 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)

 	if (ATTN_BUTTN(slot_cap))
 		intr_enable = intr_enable | ATTN_BUTTN_ENABLE;
-	
+
 	if (POWER_CTRL(slot_cap))
 		intr_enable = intr_enable | PWR_FAULT_DETECT_ENABLE;
-	
+
 	if (MRL_SENS(slot_cap))
 		intr_enable = intr_enable | MRL_DETECT_ENABLE;

-	temp_word = (temp_word & ~intr_enable) | intr_enable; 
+	temp_word = (temp_word & ~intr_enable) | intr_enable;

 	if (pciehp_poll_mode) {
 		temp_word = (temp_word & ~HP_INTR_ENABLE) | 0x0;
@@ -1345,7 +1249,10 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 		temp_word = (temp_word & ~HP_INTR_ENABLE) | HP_INTR_ENABLE;
 	}

-	/* Unmask Hot-plug Interrupt Enable for the interrupt notification mechanism case */
+	/*
+	 * Unmask Hot-plug Interrupt Enable for the interrupt
+	 * notification mechanism case.
+	 */
 	rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
 	if (rc) {
 		err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
@@ -1356,14 +1263,14 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
 		goto abort_disable_intr;
 	}
-	
+
 	temp_word =  0x1F; /* Clear all events */
 	rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
 	if (rc) {
 		err("%s: Cannot write to SLOTSTATUS register\n", __FUNCTION__);
 		goto abort_disable_intr;
 	}
-	
+
 	if (pciehp_force) {
 		dbg("Bypassing BIOS check for pciehp use on %s\n",
 				pci_name(ctrl->pci_dev));
@@ -1375,10 +1282,9 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)

 	ctrl->hpc_ops = &pciehp_hpc_ops;

-	DBG_LEAVE_ROUTINE
 	return 0;

-	/* We end up here for the many possible ways to fail this API.  */
+	/* We end up here for the many possible ways to fail this API. */
 abort_disable_intr:
 	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
 	if (!rc) {
@@ -1395,6 +1301,5 @@ abort_free_irq:
 		free_irq(ctrl->pci_dev->irq, ctrl);

 abort_free_ctlr:
-	DBG_LEAVE_ROUTINE
 	return -1;
 }
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/drivers/pci/hotplug/pciehp_pci.c
@@ -243,9 +243,10 @@ int pciehp_configure_device(struct slot *p_slot)

 int pciehp_unconfigure_device(struct slot *p_slot)
 {
-	int rc = 0;
+	int ret, rc = 0;
 	int j;
 	u8 bctl = 0;
+	u8 presence = 0;
 	struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;

 	dbg("%s: bus/dev = %x/%x\n", __FUNCTION__, p_slot->bus,
@@ -263,23 +264,28 @@ int pciehp_unconfigure_device(struct slot *p_slot)
 			continue;
 		}
 		if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-			pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
-			if (bctl & PCI_BRIDGE_CTL_VGA) {
-				err("Cannot remove display device %s\n",
+			ret = p_slot->hpc_ops->get_adapter_status(p_slot,
+								&presence);
+			if (!ret && presence) {
+				pci_read_config_byte(temp, PCI_BRIDGE_CONTROL,
+					&bctl);
+				if (bctl & PCI_BRIDGE_CTL_VGA) {
+					err("Cannot remove display device %s\n",
 						pci_name(temp));
-				pci_dev_put(temp);
-				continue;
+					pci_dev_put(temp);
+					continue;
+				}
 			}
 		}
 		pci_remove_bus_device(temp);
 		pci_dev_put(temp);
 	}
-	/* 
+	/*
 	 * Some PCI Express root ports require fixup after hot-plug operation.
 	 */
-	if (pcie_mch_quirk) 
+	if (pcie_mch_quirk)
 		pci_fixup_device(pci_fixup_final, p_slot->ctrl->pci_dev);
-	
+
 	return rc;
 }