Suppress initialized variable compile warning in ata.c.
diff --git a/src/ata.c b/src/ata.c
index 231761b..3318305 100644
--- a/src/ata.c
+++ b/src/ata.c
@@ -795,7 +795,7 @@
 ata_detect()
 {
     // Device detection
-    int driveid, last_reset_driveid;
+    int driveid, last_reset_driveid=-1;
     for(driveid=0; driveid<CONFIG_MAX_ATA_DEVICES; driveid++) {
         u8 channel = driveid / 2;
         u8 slave = driveid % 2;