X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fpowerpc%2Fplatforms%2Fiseries%2Flpevents.c;h=e5b40e3e0082cfd07c1597edd26c6f5ebbac54f5;hb=7924e4f6519dd5b349ed146fe9fe35206730be67;hp=91df52a1899addd4aeaec8b39d1d5f9809cccc19;hpb=e0cc09e295f346b7921e921f385fe5213472316a;p=linux-2.6-omap-h63xx.git

diff --git a/arch/powerpc/platforms/iseries/lpevents.c b/arch/powerpc/platforms/iseries/lpevents.c
index 91df52a1899..e5b40e3e008 100644
--- a/arch/powerpc/platforms/iseries/lpevents.c
+++ b/arch/powerpc/platforms/iseries/lpevents.c
@@ -121,6 +121,7 @@ void process_hvlpevents(void)
 {
 	struct HvLpEvent * event;
 
+ restart:
 	/* If we have recursed, just return */
 	if (!spin_trylock(&hvlpevent_queue.hq_lock))
 		return;
@@ -146,8 +147,20 @@ void process_hvlpevents(void)
 			if (event->xType < HvLpEvent_Type_NumTypes &&
 					lpEventHandler[event->xType])
 				lpEventHandler[event->xType](event);
-			else
-				printk(KERN_INFO "Unexpected Lp Event type=%d\n", event->xType );
+			else {
+				u8 type = event->xType;
+
+				/*
+				 * Don't printk in the spinlock as printk
+				 * may require ack events form the HV to send
+				 * any characters there.
+				 */
+				hvlpevent_clear_valid(event);
+				spin_unlock(&hvlpevent_queue.hq_lock);
+				printk(KERN_INFO
+					"Unexpected Lp Event type=%d\n", type);
+				goto restart;
+			}
 
 			hvlpevent_clear_valid(event);
 		} else if (hvlpevent_queue.hq_overflow_pending)
@@ -182,7 +195,7 @@ static int set_spread_lpevents(char *str)
 }
 __setup("spread_lpevents=", set_spread_lpevents);
 
-void setup_hvlpevent_queue(void)
+void __init setup_hvlpevent_queue(void)
 {
 	void *eventStack;
 
@@ -226,7 +239,7 @@ int HvLpEvent_unregisterHandler(HvLpEvent_Type eventType)
 			 * other CPUs, and that the deleted handler isn't
 			 * still running on another CPU when we return.
 			 */
-			synchronize_rcu();
+			synchronize_sched();
 			return 0;
 		}
 	}