zero out spi structure before use

fixes issue #1
lehenbauer · Sep 11, 2016 · 6c61629 · 6c61629
1 parent a7e224d
commit 6c61629
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/generic/spi.c b/generic/spi.c
@@ -95,6 +95,9 @@ tclspi_spiObjectObjCmd(ClientData cData, Tcl_Interp *interp, int objc, Tcl_Obj *
 	    int ret;
 	    int length;
 
+		// zero out the spi structure
+		memset (&spi, 0, sizeof(spi));
+
 	    // obj transfer data delay
 	    if (objc != 4) {
 		Tcl_WrongNumArgs (interp, 2, objv, "writeData delayUsecs");