1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index e630b50966ec..c5946560c4e2 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -548,11 +548,15 @@ static int
 mptctl_fasync(int fd, struct file *filep, int mode)
 {
         MPT_ADAPTER     *ioc;
+        int ret;
 
+        lock_kernel();
         list_for_each_entry(ioc, &ioc_list, list)
                 ioc->aen_event_read_flag=0;
 
-        return fasync_helper(fd, filep, mode, &async_queue);
+        ret = fasync_helper(fd, filep, mode, &async_queue);
+        unlock_kernel();
+        return ret;
 }
 
 static int