snd_trident_pcm_rvol_control 2810 sound/pci/trident/trident_main.c static const struct snd_kcontrol_new snd_trident_pcm_rvol_control = snd_trident_pcm_rvol_control 3030 sound/pci/trident/trident_main.c if ((trident->ctl_rvol = snd_ctl_new1(&snd_trident_pcm_rvol_control, trident)) == NULL)