From 785f1548a9e74cf4796c96e6f32ed67b25f79b81 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Mon, 25 Jul 2016 18:59:00 -0600
Subject: [PATCH] patman: Adjust command.Output() to raise an error by default

It is more useful to have this method raise an error when something goes
wrong. Make this the default and adjust the few callers that don't want to
use it this way.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 tools/buildman/control.py  | 2 +-
 tools/patman/checkpatch.py | 3 ++-
 tools/patman/command.py    | 5 +++--
 tools/patman/gitutil.py    | 3 ++-
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/tools/buildman/control.py b/tools/buildman/control.py
index b86d7b3..0b6ab03 100644
--- a/tools/buildman/control.py
+++ b/tools/buildman/control.py
@@ -237,7 +237,7 @@ def DoBuildman(options, args, toolchains=None, make_func=None, boards=None,
         options.step = len(series.commits) - 1
 
     gnu_make = command.Output(os.path.join(options.git,
-                                           'scripts/show-gnu-make')).rstrip()
+            'scripts/show-gnu-make'), raise_on_error=False).rstrip()
     if not gnu_make:
         sys.exit('GNU Make not found')
 
diff --git a/tools/patman/checkpatch.py b/tools/patman/checkpatch.py
index 34a3bd2..3eef6de 100644
--- a/tools/patman/checkpatch.py
+++ b/tools/patman/checkpatch.py
@@ -63,7 +63,8 @@ def CheckPatch(fname, verbose=False):
     result.problems = []
     chk = FindCheckPatch()
     item = {}
-    result.stdout = command.Output(chk, '--no-tree', fname)
+    result.stdout = command.Output(chk, '--no-tree', fname,
+                                   raise_on_error=False)
     #pipe = subprocess.Popen(cmd, stdout=subprocess.PIPE)
     #stdout, stderr = pipe.communicate()
 
diff --git a/tools/patman/command.py b/tools/patman/command.py
index d586f11..d1f0ca5 100644
--- a/tools/patman/command.py
+++ b/tools/patman/command.py
@@ -104,8 +104,9 @@ def RunPipe(pipe_list, infile=None, outfile=None,
         raise Exception("Error running '%s'" % user_pipestr)
     return result
 
-def Output(*cmd):
-    return RunPipe([cmd], capture=True, raise_on_error=False).stdout
+def Output(*cmd, **kwargs):
+    raise_on_error = kwargs.get('raise_on_error', True)
+    return RunPipe([cmd], capture=True, raise_on_error=raise_on_error).stdout
 
 def OutputOneLine(*cmd, **kwargs):
     raise_on_error = kwargs.pop('raise_on_error', True)
diff --git a/tools/patman/gitutil.py b/tools/patman/gitutil.py
index e088bae..bb7c9e0 100644
--- a/tools/patman/gitutil.py
+++ b/tools/patman/gitutil.py
@@ -391,7 +391,8 @@ def EmailPatches(series, cover_fname, args, dry_run, raise_on_error, cc_fname,
     """
     to = BuildEmailList(series.get('to'), '--to', alias, raise_on_error)
     if not to:
-        git_config_to = command.Output('git', 'config', 'sendemail.to')
+        git_config_to = command.Output('git', 'config', 'sendemail.to',
+                                       raise_on_error=False)
         if not git_config_to:
             print ("No recipient.\n"
                    "Please add something like this to a commit\n"