+Index: compat-wireless-2010-06-10/drivers/net/wireless/rt2x00/rt2x00pci.c
+===================================================================
+--- compat-wireless-2010-06-10.orig/drivers/net/wireless/rt2x00/rt2x00pci.c 2010-06-20 15:01:59.000000000 +0200
++++ compat-wireless-2010-06-10/drivers/net/wireless/rt2x00/rt2x00pci.c 2010-06-20 15:02:32.000000000 +0200
+@@ -327,8 +327,10 @@
+
+ pci_set_master(pci_dev);
+
++#ifdef CONFIG_PCI_SET_MWI
+ if (pci_set_mwi(pci_dev))
+ ERROR_PROBE("MWI not available.\n");
++#endif
+
+ if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
+ ERROR_PROBE("PCI DMA not supported.\n");
+