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[S390] ap: Setup processing for messages in request queue.

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Setup timer for processing messages in request queue, if sending an AP
message returns with reason code AP_RESPONSE_RESET_IN_PROGRESS.

Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Holger Dengler 2011-11-14 11:19:04 +01:00 committed by Martin Schwidefsky
parent 96603b505c
commit bc615deaf3
1 changed files with 17 additions and 6 deletions
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23
drivers/s390/crypto/ap_bus.c
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@ -1271,18 +1271,16 @@ ap_config_timeout(unsigned long ptr)
}
/**
* ap_schedule_poll_timer(): Schedule poll timer.
* __ap_schedule_poll_timer(): Schedule poll timer.
*
* Set up the timer to run the poll tasklet
*/
static inline void ap_schedule_poll_timer(void)
static inline void __ap_schedule_poll_timer(void)
{
ktime_t hr_time;
spin_lock_bh(&ap_poll_timer_lock);
if (ap_using_interrupts() || ap_suspend_flag)
goto out;
if (hrtimer_is_queued(&ap_poll_timer))
if (hrtimer_is_queued(&ap_poll_timer) || ap_suspend_flag)
goto out;
if (ktime_to_ns(hrtimer_expires_remaining(&ap_poll_timer)) <= 0) {
hr_time = ktime_set(0, poll_timeout);
@ -1293,6 +1291,18 @@ out:
spin_unlock_bh(&ap_poll_timer_lock);
}
/**
* ap_schedule_poll_timer(): Schedule poll timer.
*
* Set up the timer to run the poll tasklet
*/
static inline void ap_schedule_poll_timer(void)
{
if (ap_using_interrupts())
return;
__ap_schedule_poll_timer();
}
/**
* ap_poll_read(): Receive pending reply messages from an AP device.
* @ap_dev: pointer to the AP device
@ -1374,8 +1384,9 @@ static int ap_poll_write(struct ap_device *ap_dev, unsigned long *flags)
*flags |= 1;
*flags |= 2;
break;
case AP_RESPONSE_Q_FULL:
case AP_RESPONSE_RESET_IN_PROGRESS:
__ap_schedule_poll_timer();
case AP_RESPONSE_Q_FULL:
*flags |= 2;
break;
case AP_RESPONSE_MESSAGE_TOO_BIG: