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authorStephen Warren <swarren@nvidia.com>2016-05-05 17:02:06 -0600
committerTom Rini <trini@konsulko.com>2016-05-06 10:10:53 -0400
commitdaa69f5f5dba48406836b1879434fc4af4bb7df7 (patch)
tree150704e9fa32bfaa0b41989702049db2a0f077ad /arch/arm
parentb67d6b003cfdaf04335c3aaca3b27f15e7c6f204 (diff)
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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>
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