usb: host: xhci-tegra: Enable runtime PM as late as possible
A number of things can currently go wrong after the XUSB controller has been enabled, which means that it might need to be disabled again before it has ever been used. Avoid this by delaying runtime PM enablement until it's really required right before registers are accessed for the first time. Signed-off-by:Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20191206140653.2085561-8-thierry.reding@gmail.comSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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