diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 0be4e508affe..3b2293dffb3f 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -912,13 +912,6 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	unsigned int i;
 	bool irq_avail;
 
-	/*
-	 * Double check the anonymous union trickery in struct cxl_regs
-	 * FIXME switch to struct_group()
-	 */
-	BUILD_BUG_ON(offsetof(struct cxl_regs, memdev) !=
-		     offsetof(struct cxl_regs, device_regs.memdev));
-
 	rc = pcim_enable_device(pdev);
 	if (rc)
 		return rc;