From daa69f5f5dba48406836b1879434fc4af4bb7df7 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@nvidia.com>
Date: Thu, 5 May 2016 17:02:06 -0600
Subject: [PATCH] test/py: dfu: wait for USB device to go away at boot
It can take a while for a host machine to notice that a USB device has
disconnected, and process the change. At the end of the DFU test, we wait
up to 10 seconds for this to happen. This change makes the test wait the
same (up to) 10 seconds at the start of the test for any previously active
USB device-mode session to be cleaned up. Such as session might have been
used to download U-Boot into memory for example; this is certainly true
on my Tegra test systems. This changes should solve the DFU test
intermittency issues I've been seeing on some Tegra devices.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
---
test/py/tests/test_dfu.py | 2 ++
1 file changed, 2 insertions(+)
diff --git a/test/py/tests/test_dfu.py b/test/py/tests/test_dfu.py
index 8649d8731b..585e6b29d7 100644
--- a/test/py/tests/test_dfu.py
+++ b/test/py/tests/test_dfu.py
@@ -136,6 +136,8 @@ def test_dfu(u_boot_console, env__usb_dev_port, env__dfu_config):
Nothing.
"""
+ u_boot_utils.wait_until_file_open_fails(
+ env__usb_dev_port['host_usb_dev_node'], True)
fh = u_boot_utils.attempt_to_open_file(
env__usb_dev_port['host_usb_dev_node'])
if fh:
--
2.39.5