diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index f782ce1..5664b45 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -453,6 +453,18 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
 	unsigned int channels, rate, format;
 	int ret, changed;
 
+
+	printk(">>> %s()\n", __func__);
+
+	printk("format: %d\n", params_format(hw_params));
+	printk("rate: %d\n", params_rate(hw_params));
+	printk("channels: %d\n", params_channels(hw_params));
+	printk("buffer bytes: %d\n", params_buffer_bytes(hw_params));
+	printk("period bytes: %d\n", params_period_bytes(hw_params));
+	printk("access: %d\n", params_access(hw_params));
+
+	return -EINVAL;
+
 	ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,
 					       params_buffer_bytes(hw_params));
 	if (ret < 0)