tree 47de6e007bdaa6ec0b825d943046cde1c701552e
parent c0978a94aa4eab52e8c634ac0a43af4b411921e3
author Hans de Goede <hdegoede@redhat.com> 1420550861 +0100
committer Marek Vasut <marex@denx.de> 1421580695 +0100

USB: make "usb start" start usb only once

Currently we've this magic in include/config_distro_bootcmd.h to avoid
scanning the usb bus multiple times.

And it does not work when also using an usb keyboard because then the
preboot command has already scanned the bus, so we're still scanning it
twice.

This commit makes "usb start" only start usb if it is no already started,
allowing us to remove all the magic for it from include/config_distro_bootcmd.h
and just call it unconditionally.

This also causes "usb start" and "usb reset" to actually do what their
different names suggest, rather then both of them doing exactly the same.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>