1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index d1594427601f..2cf4ae75beca 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -2268,6 +2268,8 @@ static ssize_t raw1394_write(struct file *file, const char __user * buffer,
                 return -EFAULT;
         }
 
+        mutex_lock(&fi->state_mutex);
+
         switch (fi->state) {
         case opened:
                 retval = state_opened(fi, req);
@@ -2282,6 +2284,8 @@ static ssize_t raw1394_write(struct file *file, const char __user * buffer,
                 break;
         }
 
+        mutex_unlock(&fi->state_mutex);
+
         if (retval < 0) {
                 free_pending_request(req);
         } else {