diff options
Diffstat (limited to 'drivers/char/ipmi/ipmi_si_intf.c')
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 51ce508b2f5..60f2f968b68 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -61,11 +61,11 @@ # endif static inline void add_usec_to_timer(struct timer_list *t, long v) { - t->sub_expires += nsec_to_arch_cycle(v * 1000); - while (t->sub_expires >= arch_cycles_per_jiffy) + t->arch_cycle_expires += nsec_to_arch_cycle(v * 1000); + while (t->arch_cycle_expires >= arch_cycles_per_jiffy) { t->expires++; - t->sub_expires -= arch_cycles_per_jiffy; + t->arch_cycle_expires -= arch_cycles_per_jiffy; } } #endif @@ -762,18 +762,20 @@ static void si_restart_short_timer(struct smi_info *smi_info) #if defined(CONFIG_HIGH_RES_TIMERS) unsigned long flags; unsigned long jiffies_now; + unsigned long seq; if (del_timer(&(smi_info->si_timer))) { /* If we don't delete the timer, then it will go off immediately, anyway. So we only process if we actually delete the timer. */ - /* We already have irqsave on, so no need for it - here. */ - read_lock(&xtime_lock); - jiffies_now = jiffies; - smi_info->si_timer.expires = jiffies_now; - smi_info->si_timer.sub_expires = get_arch_cycles(jiffies_now); + do { + seq = read_seqbegin_irqsave(&xtime_lock, flags); + jiffies_now = jiffies; + smi_info->si_timer.expires = jiffies_now; + smi_info->si_timer.arch_cycle_expires + = get_arch_cycles(jiffies_now); + } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); add_usec_to_timer(&smi_info->si_timer, SI_SHORT_TIMEOUT_USEC); @@ -827,15 +829,19 @@ static void smi_timeout(unsigned long data) /* If the state machine asks for a short delay, then shorten the timer timeout. */ if (smi_result == SI_SM_CALL_WITH_DELAY) { +#if defined(CONFIG_HIGH_RES_TIMERS) + unsigned long seq; +#endif spin_lock_irqsave(&smi_info->count_lock, flags); smi_info->short_timeouts++; spin_unlock_irqrestore(&smi_info->count_lock, flags); #if defined(CONFIG_HIGH_RES_TIMERS) - read_lock(&xtime_lock); - smi_info->si_timer.expires = jiffies; - smi_info->si_timer.sub_expires - = get_arch_cycles(smi_info->si_timer.expires); - read_unlock(&xtime_lock); + do { + seq = read_seqbegin_irqsave(&xtime_lock, flags); + smi_info->si_timer.expires = jiffies; + smi_info->si_timer.arch_cycle_expires + = get_arch_cycles(smi_info->si_timer.expires); + } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); add_usec_to_timer(&smi_info->si_timer, SI_SHORT_TIMEOUT_USEC); #else smi_info->si_timer.expires = jiffies + 1; @@ -846,7 +852,7 @@ static void smi_timeout(unsigned long data) spin_unlock_irqrestore(&smi_info->count_lock, flags); smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; #if defined(CONFIG_HIGH_RES_TIMERS) - smi_info->si_timer.sub_expires = 0; + smi_info->si_timer.arch_cycle_expires = 0; #endif } |