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ALSA: bebob: fix wrong decoding of clock information for Terratec PHASE 88 Rack FW

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Terratec PHASE 88 rack fw has two registers for source of clock, one is
for internal/external, and another is for wordclock/spdif for external.

When clock source is internal, information in another register has no meaning.
Thus it must be ignored, but current implementation decodes it. This causes
over-indexing reference to labels.

Reported-by: András Murányi <muranyia@gmail.com>
Tested-by: András Murányi <muranyia@gmail.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2014-10-26 22:49:45 +09:00 committed by Takashi Iwai
parent 56779864f1
commit 7ce5c9268b
1 changed files with 6 additions and 1 deletions
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7
sound/firewire/bebob/bebob_terratec.c
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@ -24,7 +24,12 @@ phase88_rack_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
if (err < 0)
goto end;
*id = (enable_ext & 0x01) | ((enable_word & 0x01) << 1);
if (enable_ext == 0)
*id = 0;
else if (enable_word == 0)
*id = 1;
else
*id = 2;
end:
return err;
}