mac80211: fix compile error (#6538)

SVN-Revision: 21850

package/mac80211/patches/750-set_pci_mwi.patch

@@ -0,0 +1,16 @@
+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");
+