From e22035f02491573b326581f05e55e5ee08803c72 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Fri, 25 Oct 2013 05:10:08 +1100
Subject: [PATCH] Check for presence of thr in icarus get nonce for startup
 nonce testing to work.

---
 driver-icarus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/driver-icarus.c b/driver-icarus.c
index 5b0af8d9..43a460eb 100644
--- a/driver-icarus.c
+++ b/driver-icarus.c
@@ -497,7 +497,7 @@ static int icarus_get_nonce(struct cgpu_info *icarus, unsigned char *buf, struct
 		return ICA_NONCE_OK;
 
 	rc = SECTOMS(tdiff(tv_finish, tv_start));
-	if (thr->work_restart) {
+	if (thr && thr->work_restart) {
 		applog(LOG_DEBUG, "Icarus Read: Work restart at %d ms", rc);
 		return ICA_NONCE_RESTART;
 	}