xhci: resume USB 3 roothub first

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commit 671ffdff5b upstream.

Give USB3 devices a better chance to enumerate at USB 3 speeds if
they are connected to a suspended host.
Solves an issue with NEC uPD720200 host hanging when partially
enumerating a USB3 device as USB2 after host controller runtime resume.

Tested-by: Mike Murdoch <main.haarp@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mathias Nyman 2016-04-08 16:25:06 +03:00 • committed by Greg Kroah-Hartman

parent 6a20c0a043

commit ba7aa9a970

1 changed files with 3 additions and 3 deletions

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drivers/usb/host/xhci.c

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