Index: ar5xxx.c
===================================================================
--- ar5xxx.c	(revision 1830)
+++ ar5xxx.c	(revision 1839)
@@ -226,6 +226,19 @@
 	hal->ah_software_retry = AH_FALSE;
 	hal->ah_ant_diversity = AR5K_TUNE_ANT_DIVERSITY;
 
+	switch (device) {
+	case PCI_PRODUCT_ATHEROS_AR2413:
+	case PCI_PRODUCT_ATHEROS_AR5413:
+	case PCI_PRODUCT_ATHEROS_AR5424:
+		/* Known single chip solutions */
+		hal->ah_single_chip = AH_TRUE;
+		break;
+	default:
+		/* Multi chip solutions */
+		hal->ah_single_chip = AH_FALSE;
+		break;
+	}
+
 	if ((attach)(device, hal, st, sh, status) == NULL)
 		goto failed;