[PATCH] tests: remotehost: disable pipe buffering

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Before, we could loose some events
because of pipe buffering. I saw this problem
when run "ubus listen" or "logread -f" waiting some
specific events.
After disable buffering works much better.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@xxxxxxxxx>
---
 tests/hwsim/remotehost.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/hwsim/remotehost.py b/tests/hwsim/remotehost.py
index 0799b951f..14c3559ff 100644
--- a/tests/hwsim/remotehost.py
+++ b/tests/hwsim/remotehost.py
@@ -24,7 +24,7 @@ def execute_thread(command, reply):
     err = tempfile.TemporaryFile()
     try:
         status = 0
-        buf = subprocess.check_output(command, stderr=err).decode()
+        buf = subprocess.check_output(command, stderr=err, bufsize=0).decode()
     except subprocess.CalledProcessError as e:
         status = e.returncode
         err.seek(0)
@@ -181,7 +181,7 @@ class Host():
         _cmd = self.name + " proc_run: " + ' '.join(cmd)
         logger.debug(_cmd)
         err = tempfile.TemporaryFile()
-        proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=err)
+        proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=err, bufsize=0)
         proc.reaper_file = filename
         return proc
 
-- 
2.25.1


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