patman: Tidy up the start-up code

Much of this was written before the other Python tools and they have
evolved. Make a few updates:

- Rather than calling sys.exit(), return the exit code from the control
  module and use it in __main__
- Set up tout as it is used in some places
- We now have quite a few tests, so update the comment about that

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/patman/__main__.py

@@ -15,6 +15,7 @@ our_path = os.path.dirname(os.path.realpath(__file__))
 sys.path.append(os.path.join(our_path, '..'))
 
 # Our modules
+from u_boot_pylib import tout
 from patman import cmdline
 from patman import control
 from u_boot_pylib import test_util
@@ -31,7 +32,9 @@ def run_patman():
     if not args.debug:
         sys.tracebacklimit = 0
 
-    # Run our meagre tests
+    tout.init(tout.INFO if args.verbose else tout.WARNING)
+
+    # Run our reasonably good tests
     if args.cmd == 'test':
         # pylint: disable=C0415
         from patman import func_test
@@ -46,7 +49,8 @@ def run_patman():
 
     # Process commits, produce patches files, check them, email them
     else:
-        control.do_patman(args)
+        exit_code = control.do_patman(args)
+        sys.exit(exit_code)
 
 
 if __name__ == "__main__":

tools/patman/control.py

@@ -280,18 +280,18 @@ def do_patman(args):
                 args.ignore_bad_tags = True
             send(args)
 
-    # Check status of patches in patchwork
-    elif args.cmd == 'status':
-        ret_code = 0
-        try:
+    ret_code = 0
+    try:
+        # Check status of patches in patchwork
+        if args.cmd == 'status':
             patchwork_status(args.branch, args.count, args.start, args.end,
                              args.dest_branch, args.force, args.show_comments,
                              args.patchwork_url)
-        except Exception as exc:
-            terminal.tprint(f'patman: {type(exc).__name__}: {exc}',
-                            colour=terminal.Color.RED)
-            if args.debug:
-                print()
-                traceback.print_exc()
-            ret_code = 1
-        sys.exit(ret_code)
+    except Exception as exc:
+        terminal.tprint(f'patman: {type(exc).__name__}: {exc}',
+                        colour=terminal.Color.RED)
+        if args.debug:
+            print()
+            traceback.print_exc()
+        ret_code = 1
+    return ret_code