greybus: audio: Ratelimit err messages

In case of audio mgmt connection failure, GB requests would fail giving
an error message within the driver and reporting error. However there is
no error handling in above HAL and it'll keep on triggering similar
request via GB codec driver. This may overflood serial console. In one
of the instance it locked CPU for >10sec and caused a watchdog bite.
Thus ratelimit those error messages.

Testing Done: compile tested
Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/audio_codec.c

@@ -92,7 +92,7 @@ static int gbaudio_module_disable(struct gbaudio_codec_info *codec,
 			ret = -EINVAL;
 		}
 		if (ret) {
-			dev_err(codec->dev, "deactivate for %s failed:%d\n",
+			dev_err_ratelimited(codec->dev, "deactivate for %s failed:%d\n",
 				module->name, ret);
 			goto func_exit;
 		}
@@ -118,7 +118,7 @@ static int gbaudio_module_disable(struct gbaudio_codec_info *codec,
 			ret = -EINVAL;
 		}
 		if (ret) {
-			dev_err(codec->dev, "unregister_cport for %s failed:%d\n",
+			dev_err_ratelimited(codec->dev, "unregister_cport for %s failed:%d\n",
 				module->name, ret);
 			goto func_exit;
 		}
@@ -195,7 +195,7 @@ static int gbaudio_module_enable(struct gbaudio_codec_info *codec,
 				ret = -EINVAL;
 		}
 		if (ret) {
-			dev_err(codec->dev, "reg_cport for %s\n", module->name);
+			dev_err_ratelimited(codec->dev, "reg_cport for %s\n", module->name);
 			goto func_exit;
 		}
 		module_state = GBAUDIO_CODEC_STARTUP;
@@ -209,7 +209,7 @@ static int gbaudio_module_enable(struct gbaudio_codec_info *codec,
 		ret = gb_audio_gb_set_pcm(module->mgmt_connection, data_cport,
 					  format, rate, channels, sig_bits);
 		if (ret) {
-			dev_err(codec->dev, "set_pcm for %s\n", module->name);
+			dev_err_ratelimited(codec->dev, "set_pcm for %s\n", module->name);
 			goto func_exit;
 		}
 		module_state = GBAUDIO_CODEC_HWPARAMS;
@@ -226,7 +226,7 @@ static int gbaudio_module_enable(struct gbaudio_codec_info *codec,
 						module->mgmt_connection,
 						data_cport, 192);
 			if (ret) {
-				dev_err(codec->dev,
+				dev_err_ratelimited(codec->dev,
 					"set_rx_data_size for %s\n",
 					module->name);
 				goto func_exit;
@@ -234,7 +234,7 @@ static int gbaudio_module_enable(struct gbaudio_codec_info *codec,
 			ret = gb_audio_gb_activate_rx(module->mgmt_connection,
 						      data_cport);
 			if (ret) {
-				dev_err(codec->dev, "activate_rx for %s\n",
+				dev_err_ratelimited(codec->dev, "activate_rx for %s\n",
 					module->name);
 				goto func_exit;
 			}
@@ -244,7 +244,7 @@ static int gbaudio_module_enable(struct gbaudio_codec_info *codec,
 						module->mgmt_connection,
 						data_cport, 192);
 			if (ret) {
-				dev_err(codec->dev,
+				dev_err_ratelimited(codec->dev,
 					"set_tx_data_size for %s\n",
 					module->name);
 				goto func_exit;
@@ -252,7 +252,7 @@ static int gbaudio_module_enable(struct gbaudio_codec_info *codec,
 			ret = gb_audio_gb_activate_tx(module->mgmt_connection,
 						      data_cport);
 			if (ret) {
-				dev_err(codec->dev, "activate_tx for %s\n",
+				dev_err_ratelimited(codec->dev, "activate_tx for %s\n",
 					module->name);
 				goto func_exit;
 			}
@@ -579,7 +579,7 @@ static int gbcodec_hw_params(struct snd_pcm_substream *substream,
 		ret = gb_audio_gb_set_pcm(module->mgmt_connection, data_cport,
 					  format, rate, channels, sig_bits);
 		if (ret) {
-			dev_err(dai->dev, "%d: Error during set_pcm\n", ret);
+			dev_err_ratelimited(dai->dev, "%d: Error during set_pcm\n", ret);
 			goto func_exit;
 		}
 		if (state < GBAUDIO_CODEC_HWPARAMS) {
@@ -588,7 +588,7 @@ static int gbcodec_hw_params(struct snd_pcm_substream *substream,
 						AUDIO_APBRIDGEA_PCM_RATE_48000,
 						6144000);
 			if (ret) {
-				dev_err(dai->dev,
+				dev_err_ratelimited(dai->dev,
 					"%d: Error during set_config\n", ret);
 				goto func_exit;
 			}
@@ -619,7 +619,7 @@ static int gbmodule_prepare_tx(struct gbaudio_module_info *module,
 	ret = gb_audio_gb_set_tx_data_size(module->mgmt_connection, data_cport,
 					   192);
 	if (ret) {
-		dev_err(dev, "%d:Error during set_tx_data_size, cport:%d\n",
+		dev_err_ratelimited(dev, "%d:Error during set_tx_data_size, cport:%d\n",
 			ret, data_cport);
 		return ret;
 	}
@@ -627,7 +627,7 @@ static int gbmodule_prepare_tx(struct gbaudio_module_info *module,
 		ret = gb_audio_apbridgea_set_tx_data_size(data->connection, 0,
 							  192);
 		if (ret) {
-			dev_err(dev,
+			dev_err_ratelimited(dev,
 				"%d:Error during apbridgea set_tx_data_size, cport\n",
 				ret);
 			return ret;
@@ -636,7 +636,7 @@ static int gbmodule_prepare_tx(struct gbaudio_module_info *module,
 	ret = gb_audio_gb_activate_tx(module->mgmt_connection,
 				      data_cport);
 	if (ret)
-		dev_err(dev, "%s:Error during activate stream,%d\n",
+		dev_err_ratelimited(dev, "%s:Error during activate stream,%d\n",
 			module->name, ret);
 
 	return ret;
@@ -654,7 +654,7 @@ static int gbmodule_prepare_rx(struct gbaudio_module_info *module,
 	ret = gb_audio_gb_set_rx_data_size(module->mgmt_connection, data_cport,
 					   192);
 	if (ret) {
-		dev_err(dev, "%d:Error during set_rx_data_size, cport:%d\n",
+		dev_err_ratelimited(dev, "%d:Error during set_rx_data_size, cport:%d\n",
 			ret, data_cport);
 		return ret;
 	}
@@ -662,7 +662,7 @@ static int gbmodule_prepare_rx(struct gbaudio_module_info *module,
 		ret = gb_audio_apbridgea_set_rx_data_size(data->connection, 0,
 							  192);
 		if (ret) {
-			dev_err(dev,
+			dev_err_ratelimited(dev,
 				"%d:Error during apbridgea_set_rx_data_size\n",
 				ret);
 			return ret;
@@ -671,7 +671,7 @@ static int gbmodule_prepare_rx(struct gbaudio_module_info *module,
 	ret = gb_audio_gb_activate_rx(module->mgmt_connection,
 				      data_cport);
 	if (ret)
-		dev_err(dev, "%s:Error during activate stream,%d\n",
+		dev_err_ratelimited(dev, "%s:Error during activate stream,%d\n",
 			module->name, ret);
 
 	return ret;
@@ -820,7 +820,7 @@ static int gbcodec_trigger(struct snd_pcm_substream *substream, int cmd,
 	} else
 		ret = -EINVAL;
 	if (ret)
-		dev_err(dai->dev, "%s:Error during %s stream:%d\n",
+		dev_err_ratelimited(dai->dev, "%s:Error during %s stream:%d\n",
 			module->name, start ? "Start" : "Stop", ret);
 
 func_exit: