Loop in bitforce scanhash till end nonce reaches full nonce range.

driver-bitforce.c

@@ -420,50 +420,52 @@ static uint64_t bitforce_scanhash(struct thr_info *thr, struct work *work, uint6
 	struct cgpu_info *bitforce = thr->cgpu;
 	unsigned int sleep_time;
 	struct timeval tdiff;
-	uint64_t ret;
+	uint64_t ret = 1;
 
-	bitforce->wait_ms = 0;
-	ret = bitforce_send_work(thr, work);
+	while (bitforce->end_nonce < 0xffffffff) {
+		bitforce->wait_ms = 0;
+		ret = bitforce_send_work(thr, work);
 
-	if (!bitforce->nonce_range) {
-		/* Initially wait 2/3 of the average cycle time so we can request more
-		work before full scan is up */
-		sleep_time = (2 * bitforce->sleep_ms) / 3;
-		ms_to_timeval(sleep_time, &tdiff);
-		if (!restart_wait(&tdiff))
-			return 1;
+		if (!bitforce->nonce_range) {
+			/* Initially wait 2/3 of the average cycle time so we can request more
+			work before full scan is up */
+			sleep_time = (2 * bitforce->sleep_ms) / 3;
+			ms_to_timeval(sleep_time, &tdiff);
+			if (!restart_wait(&tdiff))
+				return 1;
 
-		bitforce->wait_ms += sleep_time;
-		queue_request(thr, false);
-
-		/* Now wait athe final 1/3rd; no bitforce should be finished by now */
-		sleep_time = bitforce->sleep_ms - sleep_time;
-		ms_to_timeval(sleep_time, &tdiff);
-		if (!restart_wait(&tdiff))
-			return 1;
-
-		bitforce->wait_ms += sleep_time;
-	} else {
-		sleep_time = bitforce->sleep_ms;
-		ms_to_timeval(sleep_time, &tdiff);
-		if (!restart_wait(&tdiff))
-			return 1;
-		/* queue extra request once more than 2/3 is done */
-		if (work->blk.nonce > 0xffffffff / 3 * 2)
+			bitforce->wait_ms += sleep_time;
 			queue_request(thr, false);
-	}
 
-	if (ret)
-		ret = bitforce_get_result(thr, work);
+			/* Now wait athe final 1/3rd; no bitforce should be finished by now */
+			sleep_time = bitforce->sleep_ms - sleep_time;
+			ms_to_timeval(sleep_time, &tdiff);
+			if (!restart_wait(&tdiff))
+				return 1;
+
+			bitforce->wait_ms += sleep_time;
+		} else {
+			sleep_time = bitforce->sleep_ms;
+			ms_to_timeval(sleep_time, &tdiff);
+			if (!restart_wait(&tdiff))
+				return 1;
+			/* queue extra request once more than 2/3 is done */
+			if (work->blk.nonce > 0xffffffff / 3 * 2)
+				queue_request(thr, false);
+		}
 
-	if (!ret) {
-		ret = 1;
-		applog(LOG_ERR, "BFL%i: Comms error", bitforce->device_id);
-		bitforce->device_last_not_well = time(NULL);
-		bitforce->device_not_well_reason = REASON_DEV_COMMS_ERROR;
-		bitforce->dev_comms_error_count++;
-		/* empty read buffer */
-		biforce_clear_buffer(bitforce);
+		if (ret)
+			ret = bitforce_get_result(thr, work);
+
+		if (!ret) {
+			applog(LOG_ERR, "BFL%i: Comms error", bitforce->device_id);
+			bitforce->device_last_not_well = time(NULL);
+			bitforce->device_not_well_reason = REASON_DEV_COMMS_ERROR;
+			bitforce->dev_comms_error_count++;
+			/* empty read buffer */
+			biforce_clear_buffer(bitforce);
+			return 1;
+		}
 	}
 	return ret;
 }