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Use dev_to_hdac_dev() instead of container_of(). No functional change intended. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20200505030357.28004-1-kai.heng.feng@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>