codecs: reduce error log rate

Huge volume of log prints out at error. Reduce the redundant log.

Change-Id: I761d5953614d039b7a725926c38adee1beeeec41
Signed-off-by: Xiaojun Sang <xsang@codeaurora.org>

dsp/codecs/audio_amrnb.c

@@ -3,7 +3,17 @@
  *
  * Copyright (C) 2008 Google, Inc.
  * Copyright (C) 2008 HTC Corporation
- * Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2011-2017, 2019 The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
  */
 
 #include <linux/types.h>
@@ -137,7 +147,7 @@ static int audio_open(struct inode *inode, struct file *file)
 	}
 	rc = audio_aio_open(audio, file);
 	if (rc < 0) {
-		pr_err("%s: audio_aio_open rc=%d\n",
+		pr_err_ratelimited("%s: audio_aio_open rc=%d\n",
 			__func__, rc);
 		goto fail;
 	}
@@ -178,7 +188,7 @@ static int audio_open(struct inode *inode, struct file *file)
 	if (IS_ERR(audio->dentry))
 		pr_debug("debugfs_create_file failed\n");
 #endif
-	pr_info("%s:amrnb decoder open success, session_id = %d\n", __func__,
+	pr_info_ratelimited("%s:amrnb decoder open success, session_id = %d\n", __func__,
 				audio->ac->session);
 	return rc;
 fail: