From: Mikko Rapeli <mikko.rap...@linaro.org>

Read from serial console with a small delay to bundle data to e.g.
full lines. Reading one character at a time is not needed and causes
busy looping.

Signed-off-by: Mikko Rapeli <mikko.rap...@linaro.org>
Signed-off-by: Luca Ceresoli <luca.ceres...@bootlin.com>
(cherry picked from commit 0049f6757f6f956fb4cc77b3df6a672c20b53cf4)
Signed-off-by: Steve Sakoman <st...@sakoman.com>
---
 meta/lib/oeqa/utils/qemurunner.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/lib/oeqa/utils/qemurunner.py 
b/meta/lib/oeqa/utils/qemurunner.py
index aa9e530f1b..925d05a339 100644
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -647,6 +647,8 @@ class QemuRunner:
             except InterruptedError:
                 continue
             if sread:
+                # try to avoid reading single character at a time
+                time.sleep(0.1)
                 answer = self.server_socket.recv(1024)
                 if answer:
                     data += answer.decode('utf-8')
-- 
2.34.1

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