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646ab160ff
Since the PCM emulation can call multiple times to hw_setup(), but we can only once allocate/request the DMA channel, we have to handle this gracefully. Signed-off-by: Harald Welte <laforge@openmoko.org> Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>