[IA64] When we exhaust the supply of records to read, clear the event status.

Patch written by Ben Woodard.  Sanity checked by Jesse Barnes.
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/salinfo.c

@@ -417,7 +417,12 @@ salinfo_log_new_read(int cpu, struct salinfo_data *data)
 
 	if (!data->saved_num)
 		call_on_cpu(cpu, salinfo_log_read_cpu, data);
-	data->state = data->log_size ? STATE_LOG_RECORD : STATE_NO_DATA;
+	if (!data->log_size) {
+	        data->state = STATE_NO_DATA;
+	        clear_bit(cpu, &data->cpu_event);
+	} else {
+	        data->state = STATE_LOG_RECORD;
+	}
 }
 
 static ssize_t