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char: rtc: remove task handling 

Since commit 9e7002a70e ("char: rtc: remove unused rtc_control() API"),
it is not possible to set a callback anymore, remove its handling from the
interrupt handler.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-07-26 15:40:55 +02:00
parent ec9cf1b7a6
commit f7430151d8
1 changed files with 0 additions and 13 deletions
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13
drivers/char/rtc.c
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@ -193,14 +193,6 @@ static unsigned long rtc_freq; /* Current periodic IRQ rate */
static unsigned long rtc_irq_data; /* our output to the world */
static unsigned long rtc_max_user_freq = 64; /* > this, need CAP_SYS_RESOURCE */
#ifdef RTC_IRQ
/*
* rtc_task_lock nests inside rtc_lock.
*/
static DEFINE_SPINLOCK(rtc_task_lock);
static rtc_task_t *rtc_callback;
#endif
/*
* If this driver ever becomes modularised, it will be really nice
* to make the epoch retain its value across module reload...
@ -264,11 +256,6 @@ static irqreturn_t rtc_interrupt(int irq, void *dev_id)
spin_unlock(&rtc_lock);
/* Now do the rest of the actions */
spin_lock(&rtc_task_lock);
if (rtc_callback)
rtc_callback->func(rtc_callback->private_data);
spin_unlock(&rtc_task_lock);
wake_up_interruptible(&rtc_wait);
kill_fasync(&rtc_async_queue, SIGIO, POLL_IN);