--- zzzz-none-000/linux-4.4.60/sound/core/pcm_lib.c 2017-04-08 07:53:53.000000000 +0000 +++ maple-7510-730/linux-4.4.60/sound/core/pcm_lib.c 2021-03-17 14:36:41.000000000 +0000 @@ -1842,8 +1842,6 @@ unsigned int cmd, void *arg) { switch (cmd) { - case SNDRV_PCM_IOCTL1_INFO: - return 0; case SNDRV_PCM_IOCTL1_RESET: return snd_pcm_lib_ioctl_reset(substream, arg); case SNDRV_PCM_IOCTL1_CHANNEL_INFO: