From 72ce448bf97cfc46f5153468ef5a7e3327ca3673 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Fri, 29 Jun 2007 18:36:12 +0200
Subject: [PATCH 1/1] only close the parallel port when it was really openend

---
 usb-driver.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/usb-driver.c b/usb-driver.c
index be3b94f..e620145 100644
--- a/usb-driver.c
+++ b/usb-driver.c
@@ -636,7 +636,10 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
 #ifndef NO_WINDRVR
 				ret = (*ioctl_func) (fd, request, wdioctl);
 #else
-				pport->close(cr->hCard);
+				if (pport)
+					pport->close(cr->hCard);
+
+				pport = NULL;
 #endif
 			}
 			break;
-- 
2.39.5