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-rw-r--r--drivers/base/memory.c8
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c4
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c7
-rw-r--r--drivers/char/ipmi/ipmi_watchdog.c6
-rw-r--r--drivers/cpufreq/cpufreq.c61
-rw-r--r--drivers/firmware/dcdbas.c19
-rw-r--r--drivers/macintosh/adb.c11
-rw-r--r--drivers/macintosh/adbhid.c3
-rw-r--r--drivers/macintosh/via-pmu.c2
-rw-r--r--drivers/macintosh/via-pmu68k.c7
-rw-r--r--drivers/macintosh/windfarm_core.c8
-rw-r--r--drivers/misc/ibmasm/heartbeat.c5
-rw-r--r--drivers/net/bonding/bond_main.c2
-rw-r--r--drivers/parisc/led.c14
-rw-r--r--drivers/parisc/power.c6
-rw-r--r--drivers/scsi/gdth.c9
-rw-r--r--drivers/usb/core/notify.c65
-rw-r--r--drivers/video/fbmem.c31
18 files changed, 113 insertions, 155 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 105a0d61eb1f37..dd547af4681a50 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -47,16 +47,16 @@ static struct kset_uevent_ops memory_uevent_ops = {
.uevent = memory_uevent,
};
-static struct notifier_block *memory_chain;
+static BLOCKING_NOTIFIER_HEAD(memory_chain);
int register_memory_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&memory_chain, nb);
+ return blocking_notifier_chain_register(&memory_chain, nb);
}
void unregister_memory_notifier(struct notifier_block *nb)
{
- notifier_chain_unregister(&memory_chain, nb);
+ blocking_notifier_chain_unregister(&memory_chain, nb);
}
/*
@@ -140,7 +140,7 @@ static ssize_t show_mem_state(struct sys_device *dev, char *buf)
static inline int memory_notify(unsigned long val, void *v)
{
- return notifier_call_chain(&memory_chain, val, v);
+ return blocking_notifier_call_chain(&memory_chain, val, v);
}
/*
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index b8fb87c6c29f5f..40eb005b9d77a5 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -3744,7 +3744,7 @@ static int ipmi_init_msghandler(void)
ipmi_timer.expires = jiffies + IPMI_TIMEOUT_JIFFIES;
add_timer(&ipmi_timer);
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
initialized = 1;
@@ -3764,7 +3764,7 @@ static __exit void cleanup_ipmi(void)
if (!initialized)
return;
- notifier_chain_unregister(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block);
/* This can't be called if any interfaces exist, so no worry about
shutting down the interfaces. */
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 12f858dc9994d2..35fbd4d8ed4b58 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -237,10 +237,10 @@ struct smi_info
static int try_smi_init(struct smi_info *smi);
-static struct notifier_block *xaction_notifier_list;
+static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list);
static int register_xaction_notifier(struct notifier_block * nb)
{
- return notifier_chain_register(&xaction_notifier_list, nb);
+ return atomic_notifier_chain_register(&xaction_notifier_list, nb);
}
static void si_restart_short_timer(struct smi_info *smi_info);
@@ -302,7 +302,8 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info)
do_gettimeofday(&t);
printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
- err = notifier_call_chain(&xaction_notifier_list, 0, smi_info);
+ err = atomic_notifier_call_chain(&xaction_notifier_list,
+ 0, smi_info);
if (err & NOTIFY_STOP_MASK) {
rv = SI_SM_CALL_WITHOUT_DELAY;
goto out;
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 616539310d9a8e..7ece9f3c8f7065 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -1158,7 +1158,8 @@ static int __init ipmi_wdog_init(void)
}
register_reboot_notifier(&wdog_reboot_notifier);
- notifier_chain_register(&panic_notifier_list, &wdog_panic_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &wdog_panic_notifier);
printk(KERN_INFO PFX "driver initialized\n");
@@ -1176,7 +1177,8 @@ static __exit void ipmi_unregister_watchdog(void)
release_nmi(&ipmi_nmi_handler);
#endif
- notifier_chain_unregister(&panic_notifier_list, &wdog_panic_notifier);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &wdog_panic_notifier);
unregister_reboot_notifier(&wdog_reboot_notifier);
if (! watchdog_user)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index aed80e6aec6dd3..9b6ae7dc8b8a3a 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -52,9 +52,8 @@ static void handle_update(void *data);
* changes to devices when the CPU clock speed changes.
* The mutex locks both lists.
*/
-static struct notifier_block *cpufreq_policy_notifier_list;
-static struct notifier_block *cpufreq_transition_notifier_list;
-static DECLARE_RWSEM (cpufreq_notifier_rwsem);
+static BLOCKING_NOTIFIER_HEAD(cpufreq_policy_notifier_list);
+static BLOCKING_NOTIFIER_HEAD(cpufreq_transition_notifier_list);
static LIST_HEAD(cpufreq_governor_list);
@@ -247,8 +246,6 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
dprintk("notification %u of frequency transition to %u kHz\n",
state, freqs->new);
- down_read(&cpufreq_notifier_rwsem);
-
policy = cpufreq_cpu_data[freqs->cpu];
switch (state) {
@@ -266,20 +263,19 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
freqs->old = policy->cur;
}
}
- notifier_call_chain(&cpufreq_transition_notifier_list,
- CPUFREQ_PRECHANGE, freqs);
+ blocking_notifier_call_chain(&cpufreq_transition_notifier_list,
+ CPUFREQ_PRECHANGE, freqs);
adjust_jiffies(CPUFREQ_PRECHANGE, freqs);
break;
case CPUFREQ_POSTCHANGE:
adjust_jiffies(CPUFREQ_POSTCHANGE, freqs);
- notifier_call_chain(&cpufreq_transition_notifier_list,
- CPUFREQ_POSTCHANGE, freqs);
+ blocking_notifier_call_chain(&cpufreq_transition_notifier_list,
+ CPUFREQ_POSTCHANGE, freqs);
if (likely(policy) && likely(policy->cpu == freqs->cpu))
policy->cur = freqs->new;
break;
}
- up_read(&cpufreq_notifier_rwsem);
}
EXPORT_SYMBOL_GPL(cpufreq_notify_transition);
@@ -1007,7 +1003,7 @@ static int cpufreq_suspend(struct sys_device * sysdev, pm_message_t pmsg)
freqs.old = cpu_policy->cur;
freqs.new = cur_freq;
- notifier_call_chain(&cpufreq_transition_notifier_list,
+ blocking_notifier_call_chain(&cpufreq_transition_notifier_list,
CPUFREQ_SUSPENDCHANGE, &freqs);
adjust_jiffies(CPUFREQ_SUSPENDCHANGE, &freqs);
@@ -1088,7 +1084,8 @@ static int cpufreq_resume(struct sys_device * sysdev)
freqs.old = cpu_policy->cur;
freqs.new = cur_freq;
- notifier_call_chain(&cpufreq_transition_notifier_list,
+ blocking_notifier_call_chain(
+ &cpufreq_transition_notifier_list,
CPUFREQ_RESUMECHANGE, &freqs);
adjust_jiffies(CPUFREQ_RESUMECHANGE, &freqs);
@@ -1125,24 +1122,24 @@ static struct sysdev_driver cpufreq_sysdev_driver = {
* changes in cpufreq policy.
*
* This function may sleep, and has the same return conditions as
- * notifier_chain_register.
+ * blocking_notifier_chain_register.
*/
int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list)
{
int ret;
- down_write(&cpufreq_notifier_rwsem);
switch (list) {
case CPUFREQ_TRANSITION_NOTIFIER:
- ret = notifier_chain_register(&cpufreq_transition_notifier_list, nb);
+ ret = blocking_notifier_chain_register(
+ &cpufreq_transition_notifier_list, nb);
break;
case CPUFREQ_POLICY_NOTIFIER:
- ret = notifier_chain_register(&cpufreq_policy_notifier_list, nb);
+ ret = blocking_notifier_chain_register(
+ &cpufreq_policy_notifier_list, nb);
break;
default:
ret = -EINVAL;
}
- up_write(&cpufreq_notifier_rwsem);
return ret;
}
@@ -1157,24 +1154,24 @@ EXPORT_SYMBOL(cpufreq_register_notifier);
* Remove a driver from the CPU frequency notifier list.
*
* This function may sleep, and has the same return conditions as
- * notifier_chain_unregister.
+ * blocking_notifier_chain_unregister.
*/
int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list)
{
int ret;
- down_write(&cpufreq_notifier_rwsem);
switch (list) {
case CPUFREQ_TRANSITION_NOTIFIER:
- ret = notifier_chain_unregister(&cpufreq_transition_notifier_list, nb);
+ ret = blocking_notifier_chain_unregister(
+ &cpufreq_transition_notifier_list, nb);
break;
case CPUFREQ_POLICY_NOTIFIER:
- ret = notifier_chain_unregister(&cpufreq_policy_notifier_list, nb);
+ ret = blocking_notifier_chain_unregister(
+ &cpufreq_policy_notifier_list, nb);
break;
default:
ret = -EINVAL;
}
- up_write(&cpufreq_notifier_rwsem);
return ret;
}
@@ -1346,29 +1343,23 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_poli
if (ret)
goto error_out;
- down_read(&cpufreq_notifier_rwsem);
-
/* adjust if necessary - all reasons */
- notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_ADJUST,
- policy);
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_ADJUST, policy);
/* adjust if necessary - hardware incompatibility*/
- notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_INCOMPATIBLE,
- policy);
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_INCOMPATIBLE, policy);
/* verify the cpu speed can be set within this limit,
which might be different to the first one */
ret = cpufreq_driver->verify(policy);
- if (ret) {
- up_read(&cpufreq_notifier_rwsem);
+ if (ret)
goto error_out;
- }
/* notification of the new policy */
- notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_NOTIFY,
- policy);
-
- up_read(&cpufreq_notifier_rwsem);
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_NOTIFY, policy);
data->min = policy->min;
data->max = policy->max;
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
index d6543fc4a923ed..339f405ff708a9 100644
--- a/drivers/firmware/dcdbas.c
+++ b/drivers/firmware/dcdbas.c
@@ -484,26 +484,15 @@ static void dcdbas_host_control(void)
static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code,
void *unused)
{
- static unsigned int notify_cnt = 0;
-
switch (code) {
case SYS_DOWN:
case SYS_HALT:
case SYS_POWER_OFF:
if (host_control_on_shutdown) {
/* firmware is going to perform host control action */
- if (++notify_cnt == 2) {
- printk(KERN_WARNING
- "Please wait for shutdown "
- "action to complete...\n");
- dcdbas_host_control();
- }
- /*
- * register again and initiate the host control
- * action on the second notification to allow
- * everyone that registered to be notified
- */
- register_reboot_notifier(nb);
+ printk(KERN_WARNING "Please wait for shutdown "
+ "action to complete...\n");
+ dcdbas_host_control();
}
break;
}
@@ -514,7 +503,7 @@ static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code,
static struct notifier_block dcdbas_reboot_nb = {
.notifier_call = dcdbas_reboot_notify,
.next = NULL,
- .priority = 0
+ .priority = INT_MIN
};
static DCDBAS_BIN_ATTR_RW(smi_data);
diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index d2ead1776c1607..34fcabac5fdbc0 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -80,7 +80,7 @@ static struct adb_driver *adb_driver_list[] = {
static struct class *adb_dev_class;
struct adb_driver *adb_controller;
-struct notifier_block *adb_client_list = NULL;
+BLOCKING_NOTIFIER_HEAD(adb_client_list);
static int adb_got_sleep;
static int adb_inited;
static pid_t adb_probe_task_pid;
@@ -354,7 +354,8 @@ adb_notify_sleep(struct pmu_sleep_notifier *self, int when)
/* Stop autopoll */
if (adb_controller->autopoll)
adb_controller->autopoll(0);
- ret = notifier_call_chain(&adb_client_list, ADB_MSG_POWERDOWN, NULL);
+ ret = blocking_notifier_call_chain(&adb_client_list,
+ ADB_MSG_POWERDOWN, NULL);
if (ret & NOTIFY_STOP_MASK) {
up(&adb_probe_mutex);
return PBOOK_SLEEP_REFUSE;
@@ -391,7 +392,8 @@ do_adb_reset_bus(void)
if (adb_controller->autopoll)
adb_controller->autopoll(0);
- nret = notifier_call_chain(&adb_client_list, ADB_MSG_PRE_RESET, NULL);
+ nret = blocking_notifier_call_chain(&adb_client_list,
+ ADB_MSG_PRE_RESET, NULL);
if (nret & NOTIFY_STOP_MASK) {
if (adb_controller->autopoll)
adb_controller->autopoll(autopoll_devs);
@@ -426,7 +428,8 @@ do_adb_reset_bus(void)
}
up(&adb_handler_sem);
- nret = notifier_call_chain(&adb_client_list, ADB_MSG_POST_RESET, NULL);
+ nret = blocking_notifier_call_chain(&adb_client_list,
+ ADB_MSG_POST_RESET, NULL);
if (nret & NOTIFY_STOP_MASK)
return -EBUSY;
diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c
index c0b46bceb5df88..f5779a73184dfb 100644
--- a/drivers/macintosh/adbhid.c
+++ b/drivers/macintosh/adbhid.c
@@ -1214,7 +1214,8 @@ static int __init adbhid_init(void)
adbhid_probe();
- notifier_chain_register(&adb_client_list, &adbhid_adb_notifier);
+ blocking_notifier_chain_register(&adb_client_list,
+ &adbhid_adb_notifier);
return 0;
}
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 4f5f3abc9cb329..0b5ff553e39a01 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -187,7 +187,7 @@ extern int disable_kernel_backlight;
int __fake_sleep;
int asleep;
-struct notifier_block *sleep_notifier_list;
+BLOCKING_NOTIFIER_HEAD(sleep_notifier_list);
#ifdef CONFIG_ADB
static int adb_dev_map = 0;
diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c
index f08e52f2107b97..35b70323e7e306 100644
--- a/drivers/macintosh/via-pmu68k.c
+++ b/drivers/macintosh/via-pmu68k.c
@@ -102,7 +102,7 @@ static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited = 0;
int asleep;
-struct notifier_block *sleep_notifier_list;
+BLOCKING_NOTIFIER_HEAD(sleep_notifier_list);
static int pmu_probe(void);
static int pmu_init(void);
@@ -913,7 +913,8 @@ int powerbook_sleep(void)
struct adb_request sleep_req;
/* Notify device drivers */
- ret = notifier_call_chain(&sleep_notifier_list, PBOOK_SLEEP, NULL);
+ ret = blocking_notifier_call_chain(&sleep_notifier_list,
+ PBOOK_SLEEP, NULL);
if (ret & NOTIFY_STOP_MASK)
return -EBUSY;
@@ -984,7 +985,7 @@ int powerbook_sleep(void)
enable_irq(i);
/* Notify drivers */
- notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL);
+ blocking_notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL);
/* reenable ADB autopoll */
pmu_adb_autopoll(adb_dev_map);
diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c
index 6c0ba04bc57a29..ab3faa702d58b0 100644
--- a/drivers/macintosh/windfarm_core.c
+++ b/drivers/macintosh/windfarm_core.c
@@ -52,7 +52,7 @@
static LIST_HEAD(wf_controls);
static LIST_HEAD(wf_sensors);
static DEFINE_MUTEX(wf_lock);
-static struct notifier_block *wf_client_list;
+static BLOCKING_NOTIFIER_HEAD(wf_client_list);
static int wf_client_count;
static unsigned int wf_overtemp;
static unsigned int wf_overtemp_counter;
@@ -68,7 +68,7 @@ static struct platform_device wf_platform_device = {
static inline void wf_notify(int event, void *param)
{
- notifier_call_chain(&wf_client_list, event, param);
+ blocking_notifier_call_chain(&wf_client_list, event, param);
}
int wf_critical_overtemp(void)
@@ -398,7 +398,7 @@ int wf_register_client(struct notifier_block *nb)
struct wf_sensor *sr;
mutex_lock(&wf_lock);
- rc = notifier_chain_register(&wf_client_list, nb);
+ rc = blocking_notifier_chain_register(&wf_client_list, nb);
if (rc != 0)
goto bail;
wf_client_count++;
@@ -417,7 +417,7 @@ EXPORT_SYMBOL_GPL(wf_register_client);
int wf_unregister_client(struct notifier_block *nb)
{
mutex_lock(&wf_lock);
- notifier_chain_unregister(&wf_client_list, nb);
+ blocking_notifier_chain_unregister(&wf_client_list, nb);
wf_client_count++;
if (wf_client_count == 0)
wf_stop_thread();
diff --git a/drivers/misc/ibmasm/heartbeat.c b/drivers/misc/ibmasm/heartbeat.c
index f295401fac21cb..7fd7a43e38de4b 100644
--- a/drivers/misc/ibmasm/heartbeat.c
+++ b/drivers/misc/ibmasm/heartbeat.c
@@ -52,12 +52,13 @@ static struct notifier_block panic_notifier = { panic_happened, NULL, 1 };
void ibmasm_register_panic_notifier(void)
{
- notifier_chain_register(&panic_notifier_list, &panic_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_notifier);
}
void ibmasm_unregister_panic_notifier(void)
{
- notifier_chain_unregister(&panic_notifier_list, &panic_notifier);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &panic_notifier);
}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 2d0ac169a86c2a..f13a539dc16971 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3159,7 +3159,7 @@ static int bond_slave_netdev_event(unsigned long event, struct net_device *slave
* bond_netdev_event: handle netdev notifier chain events.
*
* This function receives events for the netdev chain. The caller (an
- * ioctl handler calling notifier_call_chain) holds the necessary
+ * ioctl handler calling blocking_notifier_call_chain) holds the necessary
* locks for us to safely manipulate the slave devices (RTNL lock,
* dev_probe_lock).
*/
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 3627a2d7f79feb..298f2ddb2c1796 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -499,11 +499,16 @@ static int led_halt(struct notifier_block *, unsigned long, void *);
static struct notifier_block led_notifier = {
.notifier_call = led_halt,
};
+static int notifier_disabled = 0;
static int led_halt(struct notifier_block *nb, unsigned long event, void *buf)
{
char *txt;
-
+
+ if (notifier_disabled)
+ return NOTIFY_OK;
+
+ notifier_disabled = 1;
switch (event) {
case SYS_RESTART: txt = "SYSTEM RESTART";
break;
@@ -527,7 +532,6 @@ static int led_halt(struct notifier_block *nb, unsigned long event, void *buf)
if (led_func_ptr)
led_func_ptr(0xff); /* turn all LEDs ON */
- unregister_reboot_notifier(&led_notifier);
return NOTIFY_OK;
}
@@ -758,6 +762,12 @@ not_found:
return 1;
}
+static void __exit led_exit(void)
+{
+ unregister_reboot_notifier(&led_notifier);
+ return;
+}
+
#ifdef CONFIG_PROC_FS
module_init(led_create_procfs)
#endif
diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c
index 54b2b7f20b967d..0bcab83b40804f 100644
--- a/drivers/parisc/power.c
+++ b/drivers/parisc/power.c
@@ -251,7 +251,8 @@ static int __init power_init(void)
}
/* Register a call for panic conditions. */
- notifier_chain_register(&panic_notifier_list, &parisc_panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &parisc_panic_block);
tasklet_enable(&power_tasklet);
@@ -264,7 +265,8 @@ static void __exit power_exit(void)
return;
tasklet_disable(&power_tasklet);
- notifier_chain_unregister(&panic_notifier_list, &parisc_panic_block);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &parisc_panic_block);
power_tasklet.func = NULL;
pdc_soft_power_button(0);
}
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 62e3cda859afcc..7f7013e80a8826 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -671,7 +671,7 @@ static struct file_operations gdth_fops = {
static struct notifier_block gdth_notifier = {
gdth_halt, NULL, 0
};
-
+static int notifier_disabled = 0;
static void gdth_delay(int milliseconds)
{
@@ -4595,13 +4595,13 @@ static int __init gdth_detect(struct scsi_host_template *shtp)
add_timer(&gdth_timer);
#endif
major = register_chrdev(0,"gdth",&gdth_fops);
+ notifier_disabled = 0;
register_reboot_notifier(&gdth_notifier);
}
gdth_polling = FALSE;
return gdth_ctr_vcount;
}
-
static int gdth_release(struct Scsi_Host *shp)
{
int hanum;
@@ -5632,10 +5632,14 @@ static int gdth_halt(struct notifier_block *nb, ulong event, void *buf)
char cmnd[MAX_COMMAND_SIZE];
#endif
+ if (notifier_disabled)
+ return NOTIFY_OK;
+
TRACE2(("gdth_halt() event %d\n",(int)event));
if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
return NOTIFY_DONE;
+ notifier_disabled = 1;
printk("GDT-HA: Flushing all host drives .. ");
for (hanum = 0; hanum < gdth_ctr_count; ++hanum) {
gdth_flush(hanum);
@@ -5679,7 +5683,6 @@ static int gdth_halt(struct notifier_block *nb, ulong event, void *buf)
#ifdef GDTH_STATISTICS
del_timer(&gdth_timer);
#endif
- unregister_reboot_notifier(&gdth_notifier);
return NOTIFY_OK;
}
diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c
index 4b55285de9a07c..fe0ed54fa0ae1b 100644
--- a/drivers/usb/core/notify.c
+++ b/drivers/usb/core/notify.c
@@ -16,57 +16,7 @@
#include <linux/mutex.h>
#include "usb.h"
-
-static struct notifier_block *usb_notifier_list;
-static DEFINE_MUTEX(usb_notifier_lock);
-
-static void usb_notifier_chain_register(struct notifier_block **list,
- struct notifier_block *n)
-{
- mutex_lock(&usb_notifier_lock);
- while (*list) {
- if (n->priority > (*list)->priority)
- break;
- list = &((*list)->next);
- }
- n->next = *list;
- *list = n;
- mutex_unlock(&usb_notifier_lock);
-}
-
-static void usb_notifier_chain_unregister(struct notifier_block **nl,
- struct notifier_block *n)
-{
- mutex_lock(&usb_notifier_lock);
- while ((*nl)!=NULL) {
- if ((*nl)==n) {
- *nl = n->next;
- goto exit;
- }
- nl=&((*nl)->next);
- }
-exit:
- mutex_unlock(&usb_notifier_lock);
-}
-
-static int usb_notifier_call_chain(struct notifier_block **n,
- unsigned long val, void *v)
-{
- int ret=NOTIFY_DONE;
- struct notifier_block *nb = *n;
-
- mutex_lock(&usb_notifier_lock);
- while (nb) {
- ret = nb->notifier_call(nb,val,v);
- if (ret&NOTIFY_STOP_MASK) {
- goto exit;
- }
- nb = nb->next;
- }
-exit:
- mutex_unlock(&usb_notifier_lock);
- return ret;
-}
+static BLOCKING_NOTIFIER_HEAD(usb_notifier_list);
/**
* usb_register_notify - register a notifier callback whenever a usb change happens
@@ -76,7 +26,7 @@ exit:
*/
void usb_register_notify(struct notifier_block *nb)
{
- usb_notifier_chain_register(&usb_notifier_list, nb);
+ blocking_notifier_chain_register(&usb_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(usb_register_notify);
@@ -89,27 +39,28 @@ EXPORT_SYMBOL_GPL(usb_register_notify);
*/
void usb_unregister_notify(struct notifier_block *nb)
{
- usb_notifier_chain_unregister(&usb_notifier_list, nb);
+ blocking_notifier_chain_unregister(&usb_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(usb_unregister_notify);
void usb_notify_add_device(struct usb_device *udev)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev);
+ blocking_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev);
}
void usb_notify_remove_device(struct usb_device *udev)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_REMOVE, udev);
+ blocking_notifier_call_chain(&usb_notifier_list,
+ USB_DEVICE_REMOVE, udev);
}
void usb_notify_add_bus(struct usb_bus *ubus)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus);
+ blocking_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus);
}
void usb_notify_remove_bus(struct usb_bus *ubus)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus);
+ blocking_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus);
}
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 07d882b143963f..b1a8dca764306f 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -55,7 +55,7 @@
#define FBPIXMAPSIZE (1024 * 8)
-static struct notifier_block *fb_notifier_list;
+static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);
struct fb_info *registered_fb[FB_MAX];
int num_registered_fb;
@@ -784,7 +784,7 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
event.info = info;
event.data = &mode1;
- ret = notifier_call_chain(&fb_notifier_list,
+ ret = blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_MODE_DELETE, &event);
}
@@ -830,8 +830,8 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
info->flags &= ~FBINFO_MISC_USEREVENT;
event.info = info;
- notifier_call_chain(&fb_notifier_list, evnt,
- &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ evnt, &event);
}
}
}
@@ -854,7 +854,8 @@ fb_blank(struct fb_info *info, int blank)
event.info = info;
event.data = &blank;
- notifier_call_chain(&fb_notifier_list, FB_EVENT_BLANK, &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ FB_EVENT_BLANK, &event);
}
return ret;
@@ -925,7 +926,7 @@ fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
con2fb.framebuffer = -1;
event.info = info;
event.data = &con2fb;
- notifier_call_chain(&fb_notifier_list,
+ blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_GET_CONSOLE_MAP, &event);
return copy_to_user(argp, &con2fb,
sizeof(con2fb)) ? -EFAULT : 0;
@@ -944,7 +945,7 @@ fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
return -EINVAL;
event.info = info;
event.data = &con2fb;
- return notifier_call_chain(&fb_notifier_list,
+ return blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_SET_CONSOLE_MAP,
&event);
case FBIOBLANK:
@@ -1324,7 +1325,7 @@ register_framebuffer(struct fb_info *fb_info)
devfs_mk_cdev(MKDEV(FB_MAJOR, i),
S_IFCHR | S_IRUGO | S_IWUGO, "fb/%d", i);
event.info = fb_info;
- notifier_call_chain(&fb_notifier_list,
+ blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_FB_REGISTERED, &event);
return 0;
}
@@ -1366,7 +1367,7 @@ unregister_framebuffer(struct fb_info *fb_info)
*/
int fb_register_client(struct notifier_block *nb)
{
- return notifier_chain_register(&fb_notifier_list, nb);
+ return blocking_notifier_chain_register(&fb_notifier_list, nb);
}
/**
@@ -1375,7 +1376,7 @@ int fb_register_client(struct notifier_block *nb)
*/
int fb_unregister_client(struct notifier_block *nb)
{
- return notifier_chain_unregister(&fb_notifier_list, nb);
+ return blocking_notifier_chain_unregister(&fb_notifier_list, nb);
}
/**
@@ -1393,11 +1394,13 @@ void fb_set_suspend(struct fb_info *info, int state)
event.info = info;
if (state) {
- notifier_call_chain(&fb_notifier_list, FB_EVENT_SUSPEND, &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ FB_EVENT_SUSPEND, &event);
info->state = FBINFO_STATE_SUSPENDED;
} else {
info->state = FBINFO_STATE_RUNNING;
- notifier_call_chain(&fb_notifier_list, FB_EVENT_RESUME, &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ FB_EVENT_RESUME, &event);
}
}
@@ -1469,7 +1472,7 @@ int fb_new_modelist(struct fb_info *info)
if (!list_empty(&info->modelist)) {
event.info = info;
- err = notifier_call_chain(&fb_notifier_list,
+ err = blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_NEW_MODELIST,
&event);
}
@@ -1495,7 +1498,7 @@ int fb_con_duit(struct fb_info *info, int event, void *data)
evnt.info = info;
evnt.data = data;
- return notifier_call_chain(&fb_notifier_list, event, &evnt);
+ return blocking_notifier_call_chain(&fb_notifier_list, event, &evnt);
}
EXPORT_SYMBOL(fb_con_duit);
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-14 10:20:33 +0000