3920 	char *channel_buf;  in snd_hdsp_playback_copy()  local
3925 	channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, channel);  in snd_hdsp_playback_copy()
3926 	if (snd_BUG_ON(!channel_buf))  in snd_hdsp_playback_copy()
3928 	if (copy_from_user(channel_buf + pos * 4, src, count * 4))  in snd_hdsp_playback_copy()
3937 	char *channel_buf;  in snd_hdsp_capture_copy()  local
3942 	channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, channel);  in snd_hdsp_capture_copy()
3943 	if (snd_BUG_ON(!channel_buf))  in snd_hdsp_capture_copy()
3945 	if (copy_to_user(dst, channel_buf + pos * 4, count * 4))  in snd_hdsp_capture_copy()
3954 	char *channel_buf;  in snd_hdsp_hw_silence()  local
3956 	channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, channel);  in snd_hdsp_hw_silence()
3957 	if (snd_BUG_ON(!channel_buf))  in snd_hdsp_hw_silence()
3959 	memset(channel_buf + pos * 4, 0, count * 4);  in snd_hdsp_hw_silence()