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Commit d1bec20f authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: class separate device allocation from registration 



Create rtc_allocate_device to allocate memory for a struct rtc_device and
initialize it.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent 9a6757ea

drivers/rtc/class.c

+37 −26
Original line number Diff line number Diff line
@@ -150,6 +150,41 @@ static SIMPLE_DEV_PM_OPS(rtc_class_dev_pm_ops, rtc_suspend, rtc_resume); 
#define RTC_CLASS_DEV_PM_OPS	NULL

#endif



static struct rtc_device *rtc_allocate_device(void)

{

	struct rtc_device *rtc;



	rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);

	if (!rtc)

		return NULL;



	device_initialize(&rtc->dev);



	rtc->irq_freq = 1;

	rtc->max_user_freq = 64;

	rtc->dev.class = rtc_class;

	rtc->dev.groups = rtc_get_dev_attribute_groups();

	rtc->dev.release = rtc_device_release;



	mutex_init(&rtc->ops_lock);

	spin_lock_init(&rtc->irq_lock);

	spin_lock_init(&rtc->irq_task_lock);

	init_waitqueue_head(&rtc->irq_queue);



	/* Init timerqueue */

	timerqueue_init_head(&rtc->timerqueue);

	INIT_WORK(&rtc->irqwork, rtc_timer_do_work);

	/* Init aie timer */

	rtc_timer_init(&rtc->aie_timer, rtc_aie_update_irq, (void *)rtc);

	/* Init uie timer */

	rtc_timer_init(&rtc->uie_rtctimer, rtc_uie_update_irq, (void *)rtc);

	/* Init pie timer */

	hrtimer_init(&rtc->pie_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);

	rtc->pie_timer.function = rtc_pie_update_irq;

	rtc->pie_enabled = 0;



	return rtc;

}



/**

 * rtc_device_register - register w/ RTC class
@@ -189,40 +224,16 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev, 
		}

	}



	rtc = kzalloc(sizeof(struct rtc_device), GFP_KERNEL);

	if (rtc == NULL) {

	rtc = rtc_allocate_device();

	if (!rtc) {

		err = -ENOMEM;

		goto exit_ida;

	}



	device_initialize(&rtc->dev);



	rtc->id = id;

	rtc->ops = ops;

	rtc->owner = owner;

	rtc->irq_freq = 1;

	rtc->max_user_freq = 64;

	rtc->dev.parent = dev;

	rtc->dev.class = rtc_class;

	rtc->dev.groups = rtc_get_dev_attribute_groups();

	rtc->dev.release = rtc_device_release;



	mutex_init(&rtc->ops_lock);

	spin_lock_init(&rtc->irq_lock);

	spin_lock_init(&rtc->irq_task_lock);

	init_waitqueue_head(&rtc->irq_queue);



	/* Init timerqueue */

	timerqueue_init_head(&rtc->timerqueue);

	INIT_WORK(&rtc->irqwork, rtc_timer_do_work);

	/* Init aie timer */

	rtc_timer_init(&rtc->aie_timer, rtc_aie_update_irq, (void *)rtc);

	/* Init uie timer */

	rtc_timer_init(&rtc->uie_rtctimer, rtc_uie_update_irq, (void *)rtc);

	/* Init pie timer */

	hrtimer_init(&rtc->pie_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);

	rtc->pie_timer.function = rtc_pie_update_irq;

	rtc->pie_enabled = 0;



	dev_set_name(&rtc->dev, "rtc%d", id);