JTAG: fix bug when no interface connected

 - fix coredump when OpenOCD is started without a jtag interface connected.

Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>

diff --git a/src/jtag/core.c b/src/jtag/core.c
index 8a580e9e35e67215d17773debc4bcdd24bddcd3c..4f517c098e0e354659b150ad1e7dce1f327a7ef8 100644 (file)
--- a/src/jtag/core.c
+++ b/src/jtag/core.c
@@ -1623,6 +1623,13 @@ bool jtag_will_verify_capture_ir()
 
 int jtag_power_dropout(int *dropout)
 {
+       if (jtag == NULL)
+       {
+               /* TODO: as the jtag interface is not valid all
+                * we can do at the moment is exit OpenOCD */
+               LOG_ERROR("No Valid JTAG Interface Configured.");
+               exit(-1);
+       }
        return jtag->power_dropout(dropout);
 }