[PATCH] PCI hotplug: convert semaphores to mutex

semaphore to mutex conversion.

the conversion was generated via scripts, and the result was validated
automatically via a script as well.

build tested with allyesconfig.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/hotplug/acpiphp.h

@@ -37,6 +37,7 @@
 
 #include <linux/acpi.h>
 #include <linux/kobject.h>	/* for KOBJ_NAME_LEN */
+#include <linux/mutex.h>
 #include "pci_hotplug.h"
 
 #define dbg(format, arg...)					\
@@ -118,7 +119,7 @@ struct acpiphp_slot {
 	struct acpiphp_bridge *bridge;	/* parent */
 	struct list_head funcs;		/* one slot may have different
 					   objects (i.e. for each function) */
-	struct semaphore crit_sect;
+	struct mutex crit_sect;
 
 	u32		id;		/* slot id (serial #) for hotplug core */
 	u8		device;		/* pci device# */

drivers/pci/hotplug/acpiphp_glue.c

@@ -46,7 +46,7 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/smp_lock.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 #include "../pci.h"
 #include "pci_hotplug.h"
@@ -188,7 +188,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 		slot->device = device;
 		slot->sun = sun;
 		INIT_LIST_HEAD(&slot->funcs);
-		init_MUTEX(&slot->crit_sect);
+		mutex_init(&slot->crit_sect);
 
 		slot->next = bridge->slots;
 		bridge->slots = slot;
@@ -1401,7 +1401,7 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
 {
 	int retval;
 
-	down(&slot->crit_sect);
+	mutex_lock(&slot->crit_sect);
 
 	/* wake up all functions */
 	retval = power_on_slot(slot);
@@ -1413,7 +1413,7 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
 		retval = enable_device(slot);
 
  err_exit:
-	up(&slot->crit_sect);
+	mutex_unlock(&slot->crit_sect);
 	return retval;
 }
 
@@ -1424,7 +1424,7 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot)
 {
 	int retval = 0;
 
-	down(&slot->crit_sect);
+	mutex_lock(&slot->crit_sect);
 
 	/* unconfigure all functions */
 	retval = disable_device(slot);
@@ -1437,7 +1437,7 @@ int acpiphp_disable_slot(struct acpiphp_slot *slot)
 		goto err_exit;
 
  err_exit:
-	up(&slot->crit_sect);
+	mutex_unlock(&slot->crit_sect);
 	return retval;
 }
 

drivers/pci/hotplug/cpqphp.h

@@ -32,6 +32,7 @@
 #include <linux/interrupt.h>
 #include <asm/io.h>		/* for read? and write? functions */
 #include <linux/delay.h>	/* for delays */
+#include <linux/mutex.h>
 
 #define MY_NAME	"cpqphp"
 
@@ -286,7 +287,7 @@ struct event_info {
 struct controller {
 	struct controller *next;
 	u32 ctrl_int_comp;
-	struct semaphore crit_sect;	/* critical section semaphore */
+	struct mutex crit_sect;		/* critical section mutex */
 	void __iomem *hpc_reg;		/* cookie for our pci controller location */
 	struct pci_resource *mem_head;
 	struct pci_resource *p_mem_head;

drivers/pci/hotplug/cpqphp_core.c

@@ -599,7 +599,7 @@ cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
 	hp_slot = func->device - ctrl->slot_device_offset;
 
 	// Wait for exclusive access to hardware
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	if (status == 1) {
 		amber_LED_on (ctrl, hp_slot);
@@ -607,7 +607,7 @@ cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
 		amber_LED_off (ctrl, hp_slot);
 	} else {
 		// Done with exclusive hardware access
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 		return(1);
 	}
 
@@ -617,7 +617,7 @@ cpqhp_set_attention_status(struct controller *ctrl, struct pci_func *func,
 	wait_for_ctrl_irq (ctrl);
 
 	// Done with exclusive hardware access
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	return(0);
 }
@@ -1084,7 +1084,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dbg("bus device function rev: %d %d %d %d\n", ctrl->bus,
 		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev);
 
-	init_MUTEX(&ctrl->crit_sect);
+	mutex_init(&ctrl->crit_sect);
 	init_waitqueue_head(&ctrl->queue);
 
 	/* initialize our threads if they haven't already been started up */
@@ -1223,7 +1223,7 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	// turn off empty slots here unless command line option "ON" set
 	// Wait for exclusive access to hardware
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
 
@@ -1270,12 +1270,12 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	rc = init_SERR(ctrl);
 	if (rc) {
 		err("init_SERR failed\n");
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 		goto err_free_irq;
 	}
 
 	// Done with exclusive hardware access
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	cpqhp_create_debugfs_files(ctrl);
 

drivers/pci/hotplug/cpqphp_ctrl.c

@@ -1299,7 +1299,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 		 **********************************/
 		rc = CARD_FUNCTIONING;
 	} else {
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		/* turn on board without attaching to the bus */
 		enable_slot_power (ctrl, hp_slot);
@@ -1333,12 +1333,12 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 
 		if (rc)
 			return rc;
 
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		slot_enable (ctrl, hp_slot);
 		green_LED_blink (ctrl, hp_slot);
@@ -1350,7 +1350,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 
 		/* Wait for ~1 second because of hot plug spec */
 		long_delay(1*HZ);
@@ -1375,7 +1375,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 				 * called for the "base" bus/dev/func of an
 				 * adapter. */
 
-				down(&ctrl->crit_sect);
+				mutex_lock(&ctrl->crit_sect);
 
 				amber_LED_on (ctrl, hp_slot);
 				green_LED_off (ctrl, hp_slot);
@@ -1386,7 +1386,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 				/* Wait for SOBS to be unset */
 				wait_for_ctrl_irq (ctrl);
 
-				up(&ctrl->crit_sect);
+				mutex_unlock(&ctrl->crit_sect);
 
 				if (rc)
 					return rc;
@@ -1410,7 +1410,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 				 * called for the "base" bus/dev/func of an
 				 * adapter. */
 
-				down(&ctrl->crit_sect);
+				mutex_lock(&ctrl->crit_sect);
 
 				amber_LED_on (ctrl, hp_slot);
 				green_LED_off (ctrl, hp_slot);
@@ -1421,13 +1421,13 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 				/* Wait for SOBS to be unset */
 				wait_for_ctrl_irq (ctrl);
 
-				up(&ctrl->crit_sect);
+				mutex_unlock(&ctrl->crit_sect);
 
 				return rc;
 			}
 			/* Done configuring so turn LED on full time */
 
-			down(&ctrl->crit_sect);
+			mutex_lock(&ctrl->crit_sect);
 
 			green_LED_on (ctrl, hp_slot);
 
@@ -1436,7 +1436,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 			/* Wait for SOBS to be unset */
 			wait_for_ctrl_irq (ctrl);
 
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			rc = 0;
 		} else {
 			/* Something is wrong
@@ -1445,7 +1445,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 			 * in this case it will always be called for the "base"
 			 * bus/dev/func of an adapter. */
 
-			down(&ctrl->crit_sect);
+			mutex_lock(&ctrl->crit_sect);
 
 			amber_LED_on (ctrl, hp_slot);
 			green_LED_off (ctrl, hp_slot);
@@ -1456,7 +1456,7 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
 			/* Wait for SOBS to be unset */
 			wait_for_ctrl_irq (ctrl);
 
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 		}
 
 	}
@@ -1488,7 +1488,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
 	    __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
 
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	/* turn on board without attaching to the bus */
 	enable_slot_power(ctrl, hp_slot);
@@ -1522,7 +1522,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	/* Wait for SOBS to be unset */
 	wait_for_ctrl_irq(ctrl);
 
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	if (rc)
 		return rc;
@@ -1532,7 +1532,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	/* turn on board and blink green LED */
 
 	dbg("%s: before down\n", __FUNCTION__);
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 	dbg("%s: after down\n", __FUNCTION__);
 
 	dbg("%s: before slot_enable\n", __FUNCTION__);
@@ -1553,7 +1553,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 	dbg("%s: after wait_for_ctrl_irq\n", __FUNCTION__);
 
 	dbg("%s: before up\n", __FUNCTION__);
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 	dbg("%s: after up\n", __FUNCTION__);
 
 	/* Wait for ~1 second because of hot plug spec */
@@ -1607,7 +1607,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 		cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
 
 		if (rc) {
-			down(&ctrl->crit_sect);
+			mutex_lock(&ctrl->crit_sect);
 
 			amber_LED_on (ctrl, hp_slot);
 			green_LED_off (ctrl, hp_slot);
@@ -1618,7 +1618,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 			/* Wait for SOBS to be unset */
 			wait_for_ctrl_irq (ctrl);
 
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return rc;
 		} else {
 			cpqhp_save_slot_config(ctrl, func);
@@ -1640,7 +1640,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 			}
 		} while (new_slot);
 
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		green_LED_on (ctrl, hp_slot);
 
@@ -1649,9 +1649,9 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 	} else {
-		down(&ctrl->crit_sect);
+		mutex_lock(&ctrl->crit_sect);
 
 		amber_LED_on (ctrl, hp_slot);
 		green_LED_off (ctrl, hp_slot);
@@ -1662,7 +1662,7 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
 		/* Wait for SOBS to be unset */
 		wait_for_ctrl_irq (ctrl);
 
-		up(&ctrl->crit_sect);
+		mutex_unlock(&ctrl->crit_sect);
 
 		return rc;
 	}
@@ -1721,7 +1721,7 @@ static u32 remove_board(struct pci_func * func, u32 replace_flag, struct control
 		func->status = 0x01;
 	func->configured = 0;
 
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	green_LED_off (ctrl, hp_slot);
 	slot_disable (ctrl, hp_slot);
@@ -1736,7 +1736,7 @@ static u32 remove_board(struct pci_func * func, u32 replace_flag, struct control
 	/* Wait for SOBS to be unset */
 	wait_for_ctrl_irq (ctrl);
 
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	if (!replace_flag && ctrl->add_support) {
 		while (func) {
@@ -1899,7 +1899,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					dbg("button cancel\n");
 					del_timer(&p_slot->task_event);
 
-					down(&ctrl->crit_sect);
+					mutex_lock(&ctrl->crit_sect);
 
 					if (p_slot->state == BLINKINGOFF_STATE) {
 						/* slot is on */
@@ -1922,7 +1922,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					/* Wait for SOBS to be unset */
 					wait_for_ctrl_irq (ctrl);
 
-					up(&ctrl->crit_sect);
+					mutex_unlock(&ctrl->crit_sect);
 				}
 				/*** button Released (No action on press...) */
 				else if (ctrl->event_queue[loop].event_type == INT_BUTTON_RELEASE) {
@@ -1937,7 +1937,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						p_slot->state = BLINKINGON_STATE;
 						info(msg_button_on, p_slot->number);
 					}
-					down(&ctrl->crit_sect);
+					mutex_lock(&ctrl->crit_sect);
 					
 					dbg("blink green LED and turn off amber\n");
 					
@@ -1949,7 +1949,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					/* Wait for SOBS to be unset */
 					wait_for_ctrl_irq (ctrl);
 
-					up(&ctrl->crit_sect);
+					mutex_unlock(&ctrl->crit_sect);
 					init_timer(&p_slot->task_event);
 					p_slot->hp_slot = hp_slot;
 					p_slot->ctrl = ctrl;

drivers/pci/hotplug/ibmphp_hpc.c

@@ -34,6 +34,8 @@
 #include <linux/pci.h>
 #include <linux/smp_lock.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
+
 #include "ibmphp.h"
 
 static int to_debug = FALSE;
@@ -101,7 +103,7 @@ static int to_debug = FALSE;
 //----------------------------------------------------------------------------
 static int ibmphp_shutdown;
 static int tid_poll;
-static struct semaphore sem_hpcaccess;	// lock access to HPC
+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
@@ -131,7 +133,7 @@ void __init ibmphp_hpc_initvars (void)
 {
 	debug ("%s - Entry\n", __FUNCTION__);
 
-	init_MUTEX (&sem_hpcaccess);
+	mutex_init(&sem_hpcaccess);
 	init_MUTEX (&semOperations);
 	init_MUTEX_LOCKED (&sem_exit);
 	to_debug = FALSE;
@@ -778,7 +780,7 @@ int ibmphp_hpc_writeslot (struct slot * pslot, u8 cmd)
 *---------------------------------------------------------------------*/
 static void get_hpc_access (void)
 {
-	down (&sem_hpcaccess);
+	mutex_lock(&sem_hpcaccess);
 }
 
 /*----------------------------------------------------------------------
@@ -786,7 +788,7 @@ static void get_hpc_access (void)
 *---------------------------------------------------------------------*/
 void free_hpc_access (void)
 {
-	up (&sem_hpcaccess);
+	mutex_unlock(&sem_hpcaccess);
 }
 
 /*----------------------------------------------------------------------

drivers/pci/hotplug/pciehp.h

@@ -34,6 +34,7 @@
 #include <linux/delay.h>
 #include <linux/sched.h>		/* signal_pending() */
 #include <linux/pcieport_if.h>
+#include <linux/mutex.h>
 #include "pci_hotplug.h"
 
 #define MY_NAME	"pciehp"
@@ -96,7 +97,7 @@ struct php_ctlr_state_s {
 #define MAX_EVENTS		10
 struct controller {
 	struct controller *next;
-	struct semaphore crit_sect;	/* critical section semaphore */
+	struct mutex crit_sect;		/* critical section mutex */
 	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 */

drivers/pci/hotplug/pciehp_core.c

@@ -439,7 +439,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	}
 
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
 	
@@ -447,7 +447,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 		rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
 		if (rc) {
 			/* Done with exclusive hardware access */
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			goto err_out_free_ctrl_slot;
 		} else
 			/* Wait for the command to complete */
@@ -455,7 +455,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	return 0;
 

drivers/pci/hotplug/pciehp_ctrl.c

@@ -229,13 +229,13 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
 static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 {
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	/* 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)) {   
 			err("%s: Issue of Slot Power Off command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return;
 		}
 		wait_for_ctrl_irq (ctrl);
@@ -249,14 +249,14 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 	if (ATTN_LED(ctrl->ctrlcap)) { 
 		if (pslot->hpc_ops->set_attention_status(pslot, 1)) {   
 			err("%s: Issue of Set Attention Led command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return;
 		}
 		wait_for_ctrl_irq (ctrl);
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 }
 
 /**
@@ -279,13 +279,13 @@ static int board_added(struct slot *p_slot)
 			ctrl->slot_device_offset, hp_slot);
 
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		/* Power on slot */
 		rc = p_slot->hpc_ops->power_on_slot(p_slot);
 		if (rc) {
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return -1;
 		}
 
@@ -301,7 +301,7 @@ static int board_added(struct slot *p_slot)
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	/* Wait for ~1 second */
 	wait_for_ctrl_irq (ctrl);
@@ -335,7 +335,7 @@ static int board_added(struct slot *p_slot)
 		pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
 	if (PWR_LED(ctrl->ctrlcap)) {
 		/* Wait for exclusive access to hardware */
-  		down(&ctrl->crit_sect);
+  		mutex_lock(&ctrl->crit_sect);
 
   		p_slot->hpc_ops->green_led_on(p_slot);
   
@@ -343,7 +343,7 @@ static int board_added(struct slot *p_slot)
   		wait_for_ctrl_irq (ctrl);
   	
   		/* Done with exclusive hardware access */
-  		up(&ctrl->crit_sect);
+  		mutex_unlock(&ctrl->crit_sect);
   	}
 	return 0;
 
@@ -375,14 +375,14 @@ static int remove_board(struct slot *p_slot)
 	dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
 
 	/* Wait for exclusive access to hardware */
-	down(&ctrl->crit_sect);
+	mutex_lock(&ctrl->crit_sect);
 
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		/* power off slot */
 		rc = p_slot->hpc_ops->power_off_slot(p_slot);
 		if (rc) {
 			err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
-			up(&ctrl->crit_sect);
+			mutex_unlock(&ctrl->crit_sect);
 			return rc;
 		}
 		/* Wait for the command to complete */
@@ -398,7 +398,7 @@ static int remove_board(struct slot *p_slot)
 	}
 
 	/* Done with exclusive hardware access */
-	up(&ctrl->crit_sect);
+	mutex_unlock(&ctrl->crit_sect);
 
 	return 0;
 }
@@ -445,7 +445,7 @@ static void pciehp_pushbutton_thread(unsigned long slot)
 
 		if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
 			/* Wait for exclusive access to hardware */
-			down(&p_slot->ctrl->crit_sect);
+			mutex_lock(&p_slot->ctrl->crit_sect);
 
 			p_slot->hpc_ops->green_led_off(p_slot);
 
@@ -453,7 +453,7 @@ static void pciehp_pushbutton_thread(unsigned long slot)
 			wait_for_ctrl_irq (p_slot->ctrl);
 
 			/* Done with exclusive hardware access */
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 		}
 		p_slot->state = STATIC_STATE;
 	}
@@ -495,7 +495,7 @@ static void pciehp_surprise_rm_thread(unsigned long slot)
 
 		if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) {
 			/* Wait for exclusive access to hardware */
-			down(&p_slot->ctrl->crit_sect);
+			mutex_lock(&p_slot->ctrl->crit_sect);
 
 			p_slot->hpc_ops->green_led_off(p_slot);
 
@@ -503,7 +503,7 @@ static void pciehp_surprise_rm_thread(unsigned long slot)
 			wait_for_ctrl_irq (p_slot->ctrl);
 
 			/* Done with exclusive hardware access */
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 		}
 		p_slot->state = STATIC_STATE;
 	}
@@ -616,7 +616,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					switch (p_slot->state) {
 					case BLINKINGOFF_STATE:
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 						
 						if (PWR_LED(ctrl->ctrlcap)) {
 							p_slot->hpc_ops->green_led_on(p_slot);
@@ -630,11 +630,11 @@ static void interrupt_event_handler(struct controller *ctrl)
 							wait_for_ctrl_irq (ctrl);
 						}
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 						break;
 					case BLINKINGON_STATE:
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 
 						if (PWR_LED(ctrl->ctrlcap)) {
 							p_slot->hpc_ops->green_led_off(p_slot);
@@ -647,7 +647,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 							wait_for_ctrl_irq (ctrl);
 						}
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 
 						break;
 					default:
@@ -676,7 +676,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						}
 
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 
 						/* blink green LED and turn off amber */
 						if (PWR_LED(ctrl->ctrlcap)) {
@@ -693,7 +693,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						}
 
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 
 						init_timer(&p_slot->task_event);
 						p_slot->task_event.expires = jiffies + 5 * HZ;   /* 5 second delay */
@@ -708,7 +708,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 					if (POWER_CTRL(ctrl->ctrlcap)) {
 						dbg("power fault\n");
 						/* Wait for exclusive access to hardware */
-						down(&ctrl->crit_sect);
+						mutex_lock(&ctrl->crit_sect);
 
 						if (ATTN_LED(ctrl->ctrlcap)) {
 							p_slot->hpc_ops->set_attention_status(p_slot, 1);
@@ -721,7 +721,7 @@ static void interrupt_event_handler(struct controller *ctrl)
 						}
 
 						/* Done with exclusive hardware access */
-						up(&ctrl->crit_sect);
+						mutex_unlock(&ctrl->crit_sect);
 					}
 				}
 				/***********SURPRISE REMOVAL********************/
@@ -756,19 +756,19 @@ int pciehp_enable_slot(struct slot *p_slot)
 	int rc;
 
 	/* Check to see if (latch closed, card present, power off) */
-	down(&p_slot->ctrl->crit_sect);
+	mutex_lock(&p_slot->ctrl->crit_sect);
 
 	rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 	if (rc || !getstatus) {
 		info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
-		up(&p_slot->ctrl->crit_sect);
+		mutex_unlock(&p_slot->ctrl->crit_sect);
 		return 1;
 	}
 	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(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
@@ -777,11 +777,11 @@ int pciehp_enable_slot(struct slot *p_slot)
 		rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (rc || getstatus) {
 			info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
-	up(&p_slot->ctrl->crit_sect);
+	mutex_unlock(&p_slot->ctrl->crit_sect);
 
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 
@@ -806,13 +806,13 @@ int pciehp_disable_slot(struct slot *p_slot)
 		return 1;
 
 	/* Check to see if (latch closed, card present, power on) */
-	down(&p_slot->ctrl->crit_sect);
+	mutex_lock(&p_slot->ctrl->crit_sect);
 
 	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(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
@@ -821,7 +821,7 @@ int pciehp_disable_slot(struct slot *p_slot)
 		ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (ret || getstatus) {
 			info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
@@ -830,12 +830,12 @@ int pciehp_disable_slot(struct slot *p_slot)
 		ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
 			info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
-			up(&p_slot->ctrl->crit_sect);
+			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return 1;
 		}
 	}
 
-	up(&p_slot->ctrl->crit_sect);
+	mutex_unlock(&p_slot->ctrl->crit_sect);
 
 	ret = remove_board(p_slot);
 	update_slot_info(p_slot);

drivers/pci/hotplug/pciehp_hpc.c

@@ -1334,7 +1334,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	if (pci_enable_device(pdev))
 		goto abort_free_ctlr;
 	
-	init_MUTEX(&ctrl->crit_sect);
+	mutex_init(&ctrl->crit_sect);
 	/* setup wait queue */
 	init_waitqueue_head(&ctrl->queue);
 

drivers/pci/hotplug/shpchp.h

@@ -33,6 +33,7 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/sched.h>	/* signal_pending(), struct timer_list */
+#include <linux/mutex.h>
 
 #include "pci_hotplug.h"
 
@@ -79,7 +80,7 @@ struct event_info {
 
 struct controller {
 	struct controller *next;
-	struct semaphore crit_sect;	/* critical section semaphore */
+	struct mutex crit_sect;		/* critical section mutex */
 	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 */

drivers/pci/hotplug/shpchp_hpc.c

@@ -1454,7 +1454,7 @@ int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
 	}
 	dbg("%s: php_ctlr->creg %p\n", __FUNCTION__, php_ctlr->creg);
 
-	init_MUTEX(&ctrl->crit_sect);
+	mutex_init(&ctrl->crit_sect);
 	/* Setup wait queue */
 	init_waitqueue_head(&ctrl->queue);