locking/lockdep: Hide unused 'class' variable

[platform/kernel/linux-rpi.git] / kernel / relay.c

diff --git a/kernel/relay.c b/kernel/relay.c
index 04f2486..9e0f523 100644 (file)
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -428,6 +428,8 @@ static struct dentry *relay_create_buf_file(struct rchan *chan,
        dentry = chan->cb->create_buf_file(tmpname, chan->parent,
                                           S_IRUSR, buf,
                                           &chan->is_global);
+       if (IS_ERR(dentry))
+               dentry = NULL;
 
        kfree(tmpname);
 
@@ -461,7 +463,7 @@ static struct rchan_buf *relay_open_buf(struct rchan *chan, unsigned int cpu)
                dentry = chan->cb->create_buf_file(NULL, NULL,
                                                   S_IRUSR, buf,
                                                   &chan->is_global);
-               if (WARN_ON(dentry))
+               if (IS_ERR_OR_NULL(dentry))
                        goto free_buf;
        }