[alsa-devel] max channels of 3 jacks 6 channels motherboard using model=auto realtek codec

Refer to commit ce764ab22e40a046065c9417ee5f04ad2a816ac1

ALSA: hda - Add channel-mode support to Realtek auto-parser

It seem that max channel is six instead of two when the channel mode is 2ch for those 3 jacks motherboard

using hda-emu and alsa-info from http://thread.gmane.org/gmane.linux.alsa.devel/86816

PCM 0 p 44100 2 16

Open PCM ALC887 Analog for play Available PCM parameters: channels: 2/6 formats: S16_LE S32_LE rates: 44100 48000 96000 192000 Prepare PCM, rate=44100, channels=2, format=16 bits

because

spec->multiout.max_channels = spec->multiout.num_dacs * 2;

is assigned after alc_auto_add_multi_channel_mode() increase spec->multiout.num_dacs from 1 to 3

spec->multiout.num_dacs = num_pins + 1;