u_boot_pylib: Ensure subprocess is closed down
It isn't clear why we need to have two different paths for closing down
the pipe. Unify them and use the Python to avoid this warning:
subprocess.py:1127: ResourceWarning: subprocess 83531 is still running
Note that this code appears to originally have come from [1] and was
committed into the ChromeOS chromiumos/platform/crosutils repo in the
bin/cros_image_to_target.py file. The addition of the extra code path
came later, so that is chosen for the fixes tag.
[1] https://codereview.chromium.org/3391008
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: a10fd93cbc patman: Make command methods return a CommandResult
diff --git a/tools/u_boot_pylib/command.py b/tools/u_boot_pylib/command.py
index 9bbfc5b..bbe95d8 100644
--- a/tools/u_boot_pylib/command.py
+++ b/tools/u_boot_pylib/command.py
@@ -105,9 +105,7 @@
last_pipe.communicate_filter(output_func))
if result.stdout and oneline:
result.output = result.stdout.rstrip(b'\r\n')
- result.return_code = last_pipe.wait()
- else:
- result.return_code = os.waitpid(last_pipe.pid, 0)[1]
+ result.return_code = last_pipe.wait()
if raise_on_error and result.return_code:
raise Exception("Error running '%s'" % user_pipestr)
return result.to_output(binary)