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由 anton@samba.org 提交于
Move pmac_backlight_unblank into its own function and only take the pmac_backlight_mutex when we are on a pmac for that added bit of paranoia. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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