staging: unisys: Do not use 0 as the default bus root device number
I used 0 as the device id for the bus root, neglecting the fact that device 0 is a valid id in Unisys's configuration. Modify this to use UINT_MAX instead as a unique number. As fallout from this change it was noticed the bus_no and dev_no was not defined the same way consistently. Fix visorbus.h to use u32 there. Fix the resulting printk warning too. Signed-off-by: NDon Zickus <dzickus@redhat.com> Signed-off-by: NBenjamin Romer <benjamin.romer@unisys.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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