From: Holger Dengler <hd@linux.vnet.ibm.com>
Date: Tue, 8 Nov 2011 14:17:12 +0000 (+0100)
Subject: [S390] ap: Setup processing for messages in request queue.
X-Git-Tag: next-20111109~52^2~5
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ff8b19155f6b438794517b3f612a2316a702d564;p=karo-tx-linux.git

[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>
---

diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index b77ae519d79c..ec94f049e995 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);
@@ -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: