From a799aace2906cf1f67399e8c2d836cb5c2d3d171 Mon Sep 17 00:00:00 2001
From: leslie <unknown>
Date: Wed, 1 Apr 2009 18:54:08 +0800
Subject: [PATCH] smartcards: fix div/zero for clock=0 from config

---
 smartcard.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/smartcard.c b/smartcard.c
index aa4c36b..448fc36 100644
--- a/smartcard.c
+++ b/smartcard.c
@@ -683,6 +683,7 @@ bool cSmartCardSlotSerial::DeviceOpen(const char *cfg)
 {
   int invCD=0;
   if(sscanf(cfg,"%255[^:]:%d:%d:%d",devName,&invCD,&invRST,&clock)>=3) {
+    if(clock<=0) clock=ISO_FREQ;
     statInv=invCD ? TIOCM_CAR:0;
     PRINTF(L_CORE_SERIAL,"%s: open serial port",devName);
     fd=open(devName,O_RDWR|O_NONBLOCK|O_NOCTTY);
@@ -979,7 +980,7 @@ cSmartCardSlotSRPlus::cSmartCardSlotSRPlus(void)
 bool cSmartCardSlotSRPlus::DeviceOpen(const char *cfg)
 {
   if(sscanf(cfg,"%255[^:]:%d",devName,&clock)>=1) {
-    if(clock==0) clock=ISO_FREQ;
+    if(clock<=0) clock=ISO_FREQ;
     PRINTF(L_CORE_SERIAL,"%s: open serial port",devName);
     fd=open(devName,O_RDWR|O_NONBLOCK|O_NOCTTY);
     if(fd>=0) {
-- 
2.39.5