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ALSA: hda - Fix subsystem ID read regression
A regression was introduced in 7639a06c23
: if AC_PAR_SUBSYSTEM_ID
reads as zero, one should retry using AC_VERB_GET_SUBSYSTEM_ID.
This seems to hit many codecs (my own laptop included), and causes
quirks for some machines not to apply correctly.
Reported-by: TienFu Chen <tienfu.chen@canonical.com>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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parent
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1 changed files with 1 additions and 1 deletions
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@ -91,7 +91,7 @@ int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
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codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
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/* reread ssid if not set by parameter */
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if (codec->subsystem_id == -1)
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if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
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snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
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&codec->subsystem_id);
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