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commit adcdd0d5a1cb779f6d455ae70882c19c527627a8 upstream. This is Dell usb dock audio workaround. It was fixed the master volume keep lower. [Some background: the patch essentially skips the controls of a couple of FU volumes. Although the firmware exposes the dB and the value information via the usb descriptor, changing the values (we set the min volume as default) screws up the device. Although this has been fixed in the newer firmware, the devices are shipped with the old firmware, thus we need the workaround in the driver side. -- tiwai] Signed-off-by: Kailang Yang <kailang@realtek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>