Icarus should timeout if it's greater than the timeout duration even if it's receiving data.

driver-icarus.c

@@ -349,6 +349,15 @@ static int icarus_get_nonce(struct cgpu_info *icarus, unsigned char *buf, struct
 		if (amt >= read_amount)
 			return ICA_NONCE_OK;
 
+		rc += SECTOMS(tdiff(&read_finish, &read_start));
+		if (rc >= read_time) {
+			if (amt > 0)
+				applog(LOG_DEBUG, "Icarus Read: Timeout reading for %d ms", rc);
+			else
+				applog(LOG_DEBUG, "Icarus Read: No data for %d ms", rc);
+			return ICA_NONCE_TIMEOUT;
+		}
+
 		if (amt > 0) {
 			buf += amt;
 			read_amount -= amt;
@@ -356,15 +365,6 @@ static int icarus_get_nonce(struct cgpu_info *icarus, unsigned char *buf, struct
 			continue;
 		}
 
-		rc += SECTOMS(tdiff(&read_finish, &read_start));
-		if (rc >= read_time) {
-			if (opt_debug) {
-				applog(LOG_DEBUG,
-					"Icarus Read: No data in %d ms", rc);
-			}
-			return ICA_NONCE_TIMEOUT;
-		}
-
 		if (thr && thr->work_restart) {
 			if (opt_debug) {
 				applog(LOG_DEBUG,