--- zzzz-none-000/linux-4.4.60/sound/core/pcm_lib.c	2017-04-08 07:53:53.000000000 +0000
+++ hawkeye-5590-729/linux-4.4.60/sound/core/pcm_lib.c	2022-03-30 14:21:53.000000000 +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: