diff options
Diffstat (limited to 'drivers/rtc/rtc-dev.c')
| -rw-r--r-- | drivers/rtc/rtc-dev.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c index dcf5f86461f7..828b329e08e0 100644 --- a/drivers/rtc/rtc-dev.c +++ b/drivers/rtc/rtc-dev.c @@ -62,7 +62,9 @@ static void rtc_uie_task(struct work_struct *work) int err; err = rtc_read_time(&rtc->class_dev, &tm); - spin_lock_irq(&rtc->irq_lock); + + local_irq_disable(); + spin_lock(&rtc->irq_lock); if (rtc->stop_uie_polling || err) { rtc->uie_task_active = 0; } else if (rtc->oldsecs != tm.tm_sec) { @@ -75,11 +77,11 @@ static void rtc_uie_task(struct work_struct *work) } else if (schedule_work(&rtc->uie_task) == 0) { rtc->uie_task_active = 0; } - spin_unlock_irq(&rtc->irq_lock); + spin_unlock(&rtc->irq_lock); if (num) rtc_update_irq(&rtc->class_dev, num, RTC_UF | RTC_IRQF); + local_irq_enable(); } - static void rtc_uie_timer(unsigned long data) { struct rtc_device *rtc = (struct rtc_device *)data; @@ -215,7 +217,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file, struct rtc_wkalrm alarm; void __user *uarg = (void __user *) arg; - /* check that the calles has appropriate permissions + /* check that the calling task has appropriate permissions * for certain ioctls. doing this check here is useful * to avoid duplicate code in each driver. */ @@ -239,10 +241,10 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file, /* avoid conflicting IRQ users */ if (cmd == RTC_PIE_ON || cmd == RTC_PIE_OFF || cmd == RTC_IRQP_SET) { - spin_lock(&rtc->irq_task_lock); + spin_lock_irq(&rtc->irq_task_lock); if (rtc->irq_task) err = -EBUSY; - spin_unlock(&rtc->irq_task_lock); + spin_unlock_irq(&rtc->irq_task_lock); if (err < 0) return err; @@ -300,6 +302,17 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file, err = rtc_set_time(class_dev, &tm); break; + + case RTC_IRQP_READ: + if (ops->irq_set_freq) + err = put_user(rtc->irq_freq, (unsigned long *) arg); + break; + + case RTC_IRQP_SET: + if (ops->irq_set_freq) + err = rtc_irq_set_freq(class_dev, rtc->irq_task, arg); + break; + #if 0 case RTC_EPOCH_SET: #ifndef rtc_epoch |