char: rtc: remove unused rtc_control() API
Since commit 34ce71a96d
("ALSA: timer: remove legacy rtctimer"), the
rtc_register/rtc_control/rtc_unregister API is unused. As it is highly
unlikely to be needed again, remove it.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
parent
588519ff16
commit
9e7002a70e
|
@ -809,89 +809,6 @@ static __poll_t rtc_poll(struct file *file, poll_table *wait)
|
|||
}
|
||||
#endif
|
||||
|
||||
int rtc_register(rtc_task_t *task)
|
||||
{
|
||||
#ifndef RTC_IRQ
|
||||
return -EIO;
|
||||
#else
|
||||
if (task == NULL || task->func == NULL)
|
||||
return -EINVAL;
|
||||
spin_lock_irq(&rtc_lock);
|
||||
if (rtc_status & RTC_IS_OPEN) {
|
||||
spin_unlock_irq(&rtc_lock);
|
||||
return -EBUSY;
|
||||
}
|
||||
spin_lock(&rtc_task_lock);
|
||||
if (rtc_callback) {
|
||||
spin_unlock(&rtc_task_lock);
|
||||
spin_unlock_irq(&rtc_lock);
|
||||
return -EBUSY;
|
||||
}
|
||||
rtc_status |= RTC_IS_OPEN;
|
||||
rtc_callback = task;
|
||||
spin_unlock(&rtc_task_lock);
|
||||
spin_unlock_irq(&rtc_lock);
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
EXPORT_SYMBOL(rtc_register);
|
||||
|
||||
int rtc_unregister(rtc_task_t *task)
|
||||
{
|
||||
#ifndef RTC_IRQ
|
||||
return -EIO;
|
||||
#else
|
||||
unsigned char tmp;
|
||||
|
||||
spin_lock_irq(&rtc_lock);
|
||||
spin_lock(&rtc_task_lock);
|
||||
if (rtc_callback != task) {
|
||||
spin_unlock(&rtc_task_lock);
|
||||
spin_unlock_irq(&rtc_lock);
|
||||
return -ENXIO;
|
||||
}
|
||||
rtc_callback = NULL;
|
||||
|
||||
/* disable controls */
|
||||
if (!hpet_mask_rtc_irq_bit(RTC_PIE | RTC_AIE | RTC_UIE)) {
|
||||
tmp = CMOS_READ(RTC_CONTROL);
|
||||
tmp &= ~RTC_PIE;
|
||||
tmp &= ~RTC_AIE;
|
||||
tmp &= ~RTC_UIE;
|
||||
CMOS_WRITE(tmp, RTC_CONTROL);
|
||||
CMOS_READ(RTC_INTR_FLAGS);
|
||||
}
|
||||
if (rtc_status & RTC_TIMER_ON) {
|
||||
rtc_status &= ~RTC_TIMER_ON;
|
||||
del_timer(&rtc_irq_timer);
|
||||
}
|
||||
rtc_status &= ~RTC_IS_OPEN;
|
||||
spin_unlock(&rtc_task_lock);
|
||||
spin_unlock_irq(&rtc_lock);
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
EXPORT_SYMBOL(rtc_unregister);
|
||||
|
||||
int rtc_control(rtc_task_t *task, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
#ifndef RTC_IRQ
|
||||
return -EIO;
|
||||
#else
|
||||
unsigned long flags;
|
||||
if (cmd != RTC_PIE_ON && cmd != RTC_PIE_OFF && cmd != RTC_IRQP_SET)
|
||||
return -EINVAL;
|
||||
spin_lock_irqsave(&rtc_task_lock, flags);
|
||||
if (rtc_callback != task) {
|
||||
spin_unlock_irqrestore(&rtc_task_lock, flags);
|
||||
return -ENXIO;
|
||||
}
|
||||
spin_unlock_irqrestore(&rtc_task_lock, flags);
|
||||
return rtc_do_ioctl(cmd, arg, 1);
|
||||
#endif
|
||||
}
|
||||
EXPORT_SYMBOL(rtc_control);
|
||||
|
||||
/*
|
||||
* The various file operations we support.
|
||||
*/
|
||||
|
|
|
@ -211,10 +211,6 @@ void rtc_aie_update_irq(void *private);
|
|||
void rtc_uie_update_irq(void *private);
|
||||
enum hrtimer_restart rtc_pie_update_irq(struct hrtimer *timer);
|
||||
|
||||
int rtc_register(rtc_task_t *task);
|
||||
int rtc_unregister(rtc_task_t *task);
|
||||
int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg);
|
||||
|
||||
void rtc_timer_init(struct rtc_timer *timer, void (*f)(void *p), void *data);
|
||||
int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer *timer,
|
||||
ktime_t expires, ktime_t period);
|
||||
|
|
Loading…
Reference in a new issue