From: David Brownell Date: Sat, 25 Nov 2006 19:09:27 +0000 (-0800) Subject: [PATCH] rtc framework handles periodic irqs X-Git-Tag: v2.6.19~40 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2601a46474db2dcbc08ee690e56f08a10abe65cb;p=linux-2.6 [PATCH] rtc framework handles periodic irqs The RTC framework has an irq_set_freq() method that should be used to manage the periodic IRQ frequency, but the current ioctl logic doesn't know how to do that. This patch teaches it how. This means that drivers implementing irq_set_freq() will automatically support RTC_IRQP_{READ,SET} ioctls; that logic doesn't need duplication within the driver. [akpm@osdl.org: export rtc_irq_set_freq] Signed-off-by: David Brownell Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 579cd667b1..4783ec68fb 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -265,3 +265,4 @@ int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int } return err; } +EXPORT_SYMBOL_GPL(rtc_irq_set_freq); diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c index 583789c66c..3109865e8d 100644 --- a/drivers/rtc/rtc-dev.c +++ b/drivers/rtc/rtc-dev.c @@ -214,7 +214,7 @@ 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. */ @@ -299,6 +299,17 @@ 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