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9d19f48cfe
This patch adds a new attribute, pcm_class, to each PCM sysfs entry. It's useful to detect what kind of PCM stream is, for example, HAL can check whether it's a modem or not. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>