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testing/infra/emulator: remove qemu warnings about audio

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The default audio backend for qemu is configured at compile time. It
generates annoying warning messages to qemu's stderr when running our
tests, like these:
pulseaudio: set_sink_input_volume() failed
pulseaudio: Reason: Invalid argument
pulseaudio: set_sink_input_mute() failed
pulseaudio: Reason: Invalid argument

Explicitly set the audio backend to "none" at runtime to remove those
messages from our logs. There is no command line argument for this, so
use an environment variable when starting qemu.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Ricardo Martincoski 2017-07-30 01:49:46 -03:00 committed by Thomas Petazzoni
parent af6b5830ec
commit d8ab6b2b54
1 changed files with 2 additions and 1 deletions
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support/testing/infra/emulator.py
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@ -65,7 +65,8 @@ class Emulator(object):
qemu_cmd += ["-append", " ".join(kernel_cmdline)]
self.logfile.write("> starting qemu with '%s'\n" % " ".join(qemu_cmd))
self.qemu = pexpect.spawn(qemu_cmd[0], qemu_cmd[1:], timeout=5)
self.qemu = pexpect.spawn(qemu_cmd[0], qemu_cmd[1:], timeout=5,
env={"QEMU_AUDIO_DRV": "none"})
# We want only stdout into the log to avoid double echo
self.qemu.logfile_read = self.logfile