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[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>
This commit is contained in:
Ingo Molnar 2006-01-13 16:02:15 +01:00 committed by Greg Kroah-Hartman
parent c408a3794d
commit 6aa4cdd071
13 changed files with 143 additions and 137 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/pci/hotplug/acpiphp.h
View File

@ -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# */

12
drivers/pci/hotplug/acpiphp_glue.c
View File

@ -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;
}

3
drivers/pci/hotplug/cpqphp.h
View File

@ -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;

14
drivers/pci/hotplug/cpqphp_core.c
View File

@ -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);

56
drivers/pci/hotplug/cpqphp_ctrl.c
View File

@ -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;

10
drivers/pci/hotplug/ibmphp_hpc.c
View File

@ -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);
}
/*----------------------------------------------------------------------

3
drivers/pci/hotplug/pciehp.h
View File

@ -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 */

6
drivers/pci/hotplug/pciehp_core.c
View File

@ -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;

68
drivers/pci/hotplug/pciehp_ctrl.c
View File

@ -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);

2
drivers/pci/hotplug/pciehp_hpc.c
View File

@ -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);

3
drivers/pci/hotplug/shpchp.h
View File

@ -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 */

98
drivers/pci/hotplug/shpchp_ctrl.c
View File

@ -242,10 +242,10 @@ static int change_bus_speed(struct controller *ctrl, struct slot *p_slot,
int rc = 0;
dbg("%s: change to speed %d\n", __FUNCTION__, speed);
down(&ctrl->crit_sect);
mutex_lock(&ctrl->crit_sect);
if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) {
err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
@ -253,10 +253,10 @@ static int change_bus_speed(struct controller *ctrl, struct slot *p_slot,
err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
__FUNCTION__);
err("%s: Error code (%d)\n", __FUNCTION__, rc);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
@ -319,14 +319,14 @@ 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);
/* Power on slot without connecting to bus */
rc = p_slot->hpc_ops->power_on_slot(p_slot);
if (rc) {
err("%s: Failed to power on slot\n", __FUNCTION__);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return -1;
}
@ -334,7 +334,7 @@ static int board_added(struct slot *p_slot)
if (rc) {
err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return -1;
}
@ -345,7 +345,7 @@ static int board_added(struct slot *p_slot)
if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) {
err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
@ -353,19 +353,19 @@ static int board_added(struct slot *p_slot)
err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
__FUNCTION__);
err("%s: Error code (%d)\n", __FUNCTION__, rc);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
/* turn on board, blink green LED, turn off Amber LED */
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
}
@ -380,7 +380,7 @@ static int board_added(struct slot *p_slot)
if (rc || adapter_speed == PCI_SPEED_UNKNOWN) {
err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
@ -388,7 +388,7 @@ static int board_added(struct slot *p_slot)
if (rc || bus_speed == PCI_SPEED_UNKNOWN) {
err("%s: Can't get bus operation speed\n", __FUNCTION__);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
@ -399,7 +399,7 @@ static int board_added(struct slot *p_slot)
}
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) {
err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__);
@ -481,21 +481,21 @@ static int board_added(struct slot *p_slot)
return rc;
}
down(&ctrl->crit_sect);
mutex_lock(&ctrl->crit_sect);
/* turn on board, blink green LED, turn off Amber LED */
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
/* Wait for ~1 second */
wait_for_ctrl_irq (ctrl);
@ -521,25 +521,25 @@ static int board_added(struct slot *p_slot)
p_slot->pwr_save = 1;
/* Wait for exclusive access to hardware */
down(&ctrl->crit_sect);
mutex_lock(&ctrl->crit_sect);
p_slot->hpc_ops->green_led_on(p_slot);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return 0;
err_exit:
/* 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 */
rc = p_slot->hpc_ops->slot_disable(p_slot);
if (rc) {
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
@ -547,12 +547,12 @@ static int board_added(struct slot *p_slot)
if (rc) {
err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return(rc);
}
@ -581,14 +581,14 @@ static int remove_board(struct slot *p_slot)
p_slot->status = 0x01;
/* 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 */
rc = p_slot->hpc_ops->slot_disable(p_slot);
if (rc) {
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
@ -596,7 +596,7 @@ static int remove_board(struct slot *p_slot)
if (rc) {
err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
@ -604,12 +604,12 @@ static int remove_board(struct slot *p_slot)
if (rc) {
err("%s: Issue of Set Attention command failed\n", __FUNCTION__);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
return rc;
}
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
p_slot->pwr_save = 0;
p_slot->is_a_board = 0;
@ -656,12 +656,12 @@ static void shpchp_pushbutton_thread (unsigned long slot)
if (shpchp_enable_slot(p_slot)) {
/* 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);
/* Done with exclusive hardware access */
up(&p_slot->ctrl->crit_sect);
mutex_unlock(&p_slot->ctrl->crit_sect);
}
p_slot->state = STATIC_STATE;
}
@ -768,25 +768,25 @@ 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);
p_slot->hpc_ops->green_led_on(p_slot);
p_slot->hpc_ops->set_attention_status(p_slot, 0);
/* 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);
p_slot->hpc_ops->green_led_off(p_slot);
p_slot->hpc_ops->set_attention_status(p_slot, 0);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
break;
default:
@ -813,7 +813,7 @@ 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 */
p_slot->hpc_ops->green_led_blink(p_slot);
@ -821,7 +821,7 @@ static void interrupt_event_handler(struct controller *ctrl)
p_slot->hpc_ops->set_attention_status(p_slot, 0);
/* 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 */
@ -834,14 +834,14 @@ static void interrupt_event_handler(struct controller *ctrl)
/***********POWER FAULT********************/
dbg("%s: power fault\n", __FUNCTION__);
/* Wait for exclusive access to hardware */
down(&ctrl->crit_sect);
mutex_lock(&ctrl->crit_sect);
p_slot->hpc_ops->set_attention_status(p_slot, 1);
p_slot->hpc_ops->green_led_off(p_slot);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
mutex_unlock(&ctrl->crit_sect);
} else {
/* refresh notification */
if (p_slot)
@ -865,26 +865,26 @@ int shpchp_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 -ENODEV;
}
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 -ENODEV;
}
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 -ENODEV;
}
up(&p_slot->ctrl->crit_sect);
mutex_unlock(&p_slot->ctrl->crit_sect);
p_slot->is_a_board = 1;
@ -925,27 +925,27 @@ int shpchp_disable_slot (struct slot *p_slot)
return -ENODEV;
/* Check to see if (latch closed, card present, power on) */
down(&p_slot->ctrl->crit_sect);
mutex_lock(&p_slot->ctrl->crit_sect);
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 -ENODEV;
}
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 -ENODEV;
}
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 -ENODEV;
}
up(&p_slot->ctrl->crit_sect);
mutex_unlock(&p_slot->ctrl->crit_sect);
ret = remove_board(p_slot);
update_slot_info(p_slot);

2
drivers/pci/hotplug/shpchp_hpc.c
View File

@ -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);