Reset the work_restart bool after the scanwork loop in case the driver flushes work synchronously.

cgminer.c

@@ -6631,12 +6631,16 @@ void hash_queued_work(struct thr_info *mythr)
 		struct timeval diff;
 		int64_t hashes;
 
-		mythr->work_restart = mythr->work_update = false;
+		mythr->work_update = false;
 
 		fill_queue(mythr, cgpu, drv, thr_id);
 
 		hashes = drv->scanwork(mythr);
 
+		/* Reset the bool here in case the driver looks for it
+		 * synchronously in the scanwork loop. */
+		mythr->work_restart = false;
+
 		if (unlikely(hashes == -1 )) {
 			applog(LOG_ERR, "%s %d failure, disabling!", drv->name, cgpu->device_id);
 			cgpu->deven = DEV_DISABLED;
@@ -6680,10 +6684,14 @@ void hash_driver_work(struct thr_info *mythr)
 		struct timeval diff;
 		int64_t hashes;
 
-		mythr->work_restart = mythr->work_update = false;
+		mythr->work_update = false;
 
 		hashes = drv->scanwork(mythr);
 
+		/* Reset the bool here in case the driver looks for it
+		 * synchronously in the scanwork loop. */
+		mythr->work_restart = false;
+
 		if (unlikely(hashes == -1 )) {
 			applog(LOG_ERR, "%s %d failure, disabling!", drv->name, cgpu->device_id);
 			cgpu->deven = DEV_DISABLED;