From: Martin Mares <mj@ucw.cz>
Date: Sat, 22 Nov 2014 19:33:12 +0000 (+0100)
Subject: Nocturn: Do not write to a missing USB device
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;ds=sidebyside;h=47295f541ce652feaf008e8879ce7ae58e84987b;p=ursary.git

Nocturn: Do not write to a missing USB device
---

diff --git a/nocturn.c b/nocturn.c
index ba5edf2..158f140 100644
--- a/nocturn.c
+++ b/nocturn.c
@@ -270,7 +270,7 @@ static void noct_do_write(uint cmd, uint arg)
 
 static void noct_sched_write(void)
 {
-  if (noct_write_pending)
+  if (!usb_dev || noct_write_pending)
     return;
 
   if (noct_dirty_button)