--- zzzz-none-000/linux-2.6.28.10/include/linux/ata.h	2009-05-02 18:54:43.000000000 +0000
+++ puma5-6360-529/linux-2.6.28.10/include/linux/ata.h	2011-04-04 12:24:55.000000000 +0000
@@ -815,7 +815,7 @@
 	     (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
 	    id[ATA_ID_SECTORS] == 63 &&
 	    (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
-	    (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
+	    (lba_sects >= (unsigned long)(16383 * 63 * id[ATA_ID_HEADS])))
 		return 1;
 
 	chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];