Use Debug level 1 for library errors so that nothing is printed when no

camera is connected.

backend/gphoto2.c

@@ -1,12 +1,12 @@
-/* Please note!  This is extremely alpha code, and is really intended as
+/* Please note!  Although intended to support multiple camera types
- * a "proof of concept" since I don't yet know whether it's going to 
+ * it's been tested with only cameras I have access to: the Kodak DC240
- * to be practical and/or possible to implement a the complete backend.
- * It's also been tested with only cameras I have access to: the Kodak DC240
  * and the Directory Browse "camera."  I'm very interested 
  * in learning what it would take to support more cameras.  In 
  * particular, the current incarnation will only support cameras
  * that directly generate jpeg files.
  * 
+ * Please report sucesses or failures using this backend!
+ *  
  * However, having said that, I've already found it to be quite useful
  * even in its current form - one reason is that gphoto2 provides access
  * to the camera via USB which is not supported by the regular DC240 
@@ -106,8 +106,7 @@
 #include <gphoto2-camera.h>
 #include <gphoto2-port-log.h>
 
-#define CHECK_EXIT(f) {int res = f; if (res < 0) {DBG (0,"ERROR: %s\n", gp_result_as_string (res)); return (SANE_STATUS_INVAL);}}
+#define CHECK_RET(f) {int res = f; if (res < 0) {DBG (1,"ERROR: %s\n", gp_result_as_string (res)); return (SANE_STATUS_INVAL);}}
-#define CHECK_RET(f) {int res = f; if (res < 0) {DBG (0,"ERROR: %s\n", gp_result_as_string (res)); return (SANE_STATUS_INVAL);}}
 
 #ifndef PATH_MAX
 # define PATH_MAX	1024