[U-Boot] [PATCH] test/py: dfu: wait for USB device to go away at boot

[Tom Rini]

On Thu, May 05, 2016 at 05:02:06PM -0600, Stephen Warren wrote:

> From: Stephen Warren <swarren at nvidia.com>
> 
> 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 at nvidia.com>

Applied to u-boot/master, thanks!

-- 
Tom
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