PPC: Fix powerpc vio_find_name to not use devices_subsys
This fixes vio_find_name() in arch/powerpc/kernel/vio.c, which is currently broken because it tries to use devices_subsys. That is bad for two reasons: (1) it's doing (or trying to do) a scan of all devices when it should only be scanning those on the vio bus, and (2) devices_subsys was an internal symbol of the device system code which was never meant for external use and has now gone away, and thus the kernel fails to compile on pSeries. The new version uses bus_find_device_by_name() on the vio bus (vio_bus_type). Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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