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-rw-r--r--drivers/vhost/vhost.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 9759249..4eecdb8 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -89,6 +89,9 @@ int vhost_poll_start(struct vhost_poll *poll, struct file *file)
unsigned long mask;
int ret = 0;
+ if (poll->wqh)
+ return 0;
+
mask = file->f_op->poll(file, &poll->table);
if (mask)
vhost_poll_wakeup(&poll->wait, 0, 0, (void *)mask);
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