diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index e6bfd55..64dab4d 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -449,6 +449,7 @@ static struct idxd_device *idxd_alloc(struct pci_dev *pdev, struct idxd_driver_d
 	}
 
 	spin_lock_init(&idxd->dev_lock);
+	spin_lock_init(&idxd->cmd_lock);
 
 	return idxd;
 }