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d7cfa2fdfc
Add a control to retrieve the power status from the interface (bus-powered, external-powered, or insufficient power). Mark the new scarlett2_notify_power_status() function with __always_unused until it gets used when the Gen 4 notification callback function arrays are added. Signed-off-by: Geoffrey D. Bennett <g@b4.vu> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/d9806bc41adc45b1c19749562fec7765ba24351d.1703612638.git.g@b4.vu