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authorHolger Dengler <hd@linux.vnet.ibm.com>2011-11-14 11:19:04 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-11-14 11:19:09 +0100
commitbc615deaf35ab06e7fe5672b0efb3c7a0b2dcf1a (patch)
tree6cd9c934c22361eeb628de2a54ed9f85705f5212
parent96603b505cb6c54782a27599afef65cc108ef5f2 (diff)
downloadop-kernel-dev-bc615deaf35ab06e7fe5672b0efb3c7a0b2dcf1a.zip
op-kernel-dev-bc615deaf35ab06e7fe5672b0efb3c7a0b2dcf1a.tar.gz
[S390] ap: Setup processing for messages in request queue.
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>
-rw-r--r--drivers/s390/crypto/ap_bus.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index b77ae51..ec94f04 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -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);
@@ -1294,6 +1292,18 @@ out:
}
/**
+ * 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
* @flags: pointer to control flags, bit 2^0 is set if another poll is
@@ -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:
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