[PATCH] ibmasm driver: correctly wake up sleeping threads

Due to my incomplete understanding of the wait_event_interruptible() function
threads waiting for service processor events were not woken up.  This patch
fixes that problem.

Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/misc/ibmasm/ibmasm.h b/drivers/misc/ibmasm/ibmasm.h
index 1e83406382e7..35c4def5af18 100644
--- a/drivers/misc/ibmasm/ibmasm.h
+++ b/drivers/misc/ibmasm/ibmasm.h
@@ -108,6 +108,7 @@ struct event_buffer {
 };
 
 struct event_reader {
+        int                     cancelled;
         unsigned int            next_serial_number;
         wait_queue_head_t       wait;
         struct list_head        node;
@@ -185,6 +186,7 @@ extern void ibmasm_receive_event(struct service_processor *sp, void *data,  unsi
 extern void ibmasm_event_reader_register(struct service_processor *sp, struct event_reader *reader);
 extern void ibmasm_event_reader_unregister(struct service_processor *sp, struct event_reader *reader);
 extern int ibmasm_get_next_event(struct service_processor *sp, struct event_reader *reader);
+extern void ibmasm_cancel_next_event(struct event_reader *reader);
 
 /* heartbeat - from SP to OS */
 extern void ibmasm_register_panic_notifier(void);