提交 8f43f84f 编写于 作者: C Corey Minyard 提交者: Linus Torvalds

[PATCH] ipmi: timer shutdown cleanup

Clean up the timer shutdown handling in the IPMI driver.
Signed-off-by: NCorey Minyard <minyard@acm.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 845e78a1
......@@ -2747,16 +2747,13 @@ static struct timer_list ipmi_timer;
the queue and this silliness can go away. */
#define IPMI_REQUEST_EV_TIME (1000 / (IPMI_TIMEOUT_TIME))
static volatile int stop_operation = 0;
static volatile int timer_stopped = 0;
static atomic_t stop_operation;
static unsigned int ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
static void ipmi_timeout(unsigned long data)
{
if (stop_operation) {
timer_stopped = 1;
if (atomic_read(&stop_operation))
return;
}
ticks_to_req_ev--;
if (ticks_to_req_ev == 0) {
......@@ -2766,8 +2763,7 @@ static void ipmi_timeout(unsigned long data)
ipmi_timeout_handler(IPMI_TIMEOUT_TIME);
ipmi_timer.expires += IPMI_TIMEOUT_JIFFIES;
add_timer(&ipmi_timer);
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
}
......@@ -3130,11 +3126,8 @@ static __exit void cleanup_ipmi(void)
/* Tell the timer to stop, then wait for it to stop. This avoids
problems with race conditions removing the timer here. */
stop_operation = 1;
while (!timer_stopped) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
}
atomic_inc(&stop_operation);
del_timer_sync(&ipmi_timer);
remove_proc_entry(proc_ipmi_root->name, &proc_root);
......
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