We can't use static variable first for checking when musb is
initialized when we have multiple musb instances like on am335x.
Tested-by: NLadislav Michl <ladis@linux-mips.org>
Reviewed-by: NJohan Hovold <johan@hovoldconsulting.com>
Tested-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NBin Liu <b-liu@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>