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Commit 671be04a authored by Zhou Song's avatar Zhou Song
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hal: handle the reserved usecase when derive sound device 

There's one reserved usecaes for hypothetical purpose which
can do happen, now handle it properly to avoid breaking
the exsiting playback usecase.

Change-Id: Ie2e6d9c00e3cd2c5b935855c0d3caebead4e99fa
parent 82debc53

hal/audio_hw.c

+4 −3
Original line number Diff line number Diff line
@@ -1303,9 +1303,10 @@ static snd_device_t derive_playback_snd_device(void * platform, 
        if (platform_check_backends_match(d3[0], d3[1])) {

            return d2; // case 5

        } else {

            // check if d1 is related to any of d3's

            if (d1 == d3[0] || d1 == d3[1])

                return d1; // case 1

            // check if d1 is related to any of d3's OR

            // old uc is combo device but new_uc is one of the combo device

            if (d1 == d3[0] || d1 == d3[1] || popcount(a1) > 1)

                return d1; // case 1, 7

            else

                return d3[1]; // case 8

        }