diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index 6c27980a5..ed4910e3b 100755
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -1190,13 +1190,13 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca)
 		ioat_dma->dca = ioat_dca_init(pdev, ioat_dma->reg_base);
 
 	/* disable relaxed ordering */
-	err = pcie_capability_read_word(pdev, IOAT_DEVCTRL_OFFSET, &val16);
+	err = pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &val16);
 	if (err)
 		return pcibios_err_to_errno(err);
 
 	/* clear relaxed ordering enable */
-	val16 &= ~IOAT_DEVCTRL_ROE;
-	err = pcie_capability_write_word(pdev, IOAT_DEVCTRL_OFFSET, val16);
+	val16 &= ~PCI_EXP_DEVCTL_RELAX_EN;
+	err = pcie_capability_write_word(pdev, PCI_EXP_DEVCTL, val16);
 	if (err)
 		return pcibios_err_to_errno(err);
 
diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h
index f55a5f92f..54cf0ad39 100755
--- a/drivers/dma/ioat/registers.h
+++ b/drivers/dma/ioat/registers.h
@@ -14,13 +14,6 @@
 #define IOAT_PCI_CHANERR_INT_OFFSET		0x180
 #define IOAT_PCI_CHANERRMASK_INT_OFFSET		0x184
 
-/* PCIe config registers */
-
-/* EXPCAPID + N */
-#define IOAT_DEVCTRL_OFFSET			0x8
-/* relaxed ordering enable */
-#define IOAT_DEVCTRL_ROE			0x10
-
 /* MMIO Device Registers */
 #define IOAT_CHANCNT_OFFSET			0x00	/*  8-bit */