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author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-07-06 11:41:58 +0200 |
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committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-07-07 13:14:06 +0200 |
commit | d1bec20facd6eae17cb2f39ebbf443c95c650490 (patch) | |
tree | 088d06e722ba1cf5bf8cface608413a8623246da /drivers/rtc | |
parent | rtc: stm32: add STM32H7 RTC support (diff) | |
download | linux-d1bec20facd6eae17cb2f39ebbf443c95c650490.tar.xz linux-d1bec20facd6eae17cb2f39ebbf443c95c650490.zip |
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: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc')
-rw-r--r-- | drivers/rtc/class.c | 63 |
1 files changed, 37 insertions, 26 deletions
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index 543c64cd3df0..fb39c1334d7b 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -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); |