diff --git a/us144mkii.c b/us144mkii.c
index 5339876..9a89bde 100644
--- a/us144mkii.c
+++ b/us144mkii.c
@@ -5,7 +5,7 @@
 
 MODULE_AUTHOR("Šerif Rami <ramiserifpersia@gmail.com>");
 MODULE_DESCRIPTION("ALSA Driver for TASCAM US-144MKII");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
 
 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
@@ -294,10 +294,12 @@ static int tascam_probe(struct usb_interface *intf, const struct usb_device_id *
 
 	u16 stream_mode = (tascam->dev_id == USB_PID_TASCAM_US200) ? MODE_VAL_STREAM_START_US200 : MODE_VAL_STREAM_START;
 
-	if (us144mkii_configure_device_for_rate(tascam, 48000, stream_mode) < 0)
-		dev_warn(&dev->dev, "Failed to initialize device at 48khz\n");
-	else
-		tascam->current_rate = 48000;
+	if (us144mkii_configure_device_for_rate(tascam, 48000, stream_mode) < 0) {
+		dev_err(&dev->dev, "Failed to initialize device at 48khz\n");
+		err = -EIO;
+		goto free_card;
+	}
+	tascam->current_rate = 48000;
 
 	err = snd_card_register(card);
 	if (err < 0)
diff --git a/us144mkii_capture.c b/us144mkii_capture.c
index 04efea6..035af49 100644
--- a/us144mkii_capture.c
+++ b/us144mkii_capture.c
@@ -6,8 +6,7 @@
 
 const struct snd_pcm_hardware tascam_capture_hw = {
 	.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
-	SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID |
-	SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
+	SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
 	.formats = SNDRV_PCM_FMTBIT_S32_LE,
 	.rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
 	SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000),
diff --git a/us144mkii_pcm.c b/us144mkii_pcm.c
index 100ba4b..ead053c 100644
--- a/us144mkii_pcm.c
+++ b/us144mkii_pcm.c
@@ -154,9 +154,19 @@ int tascam_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_
 void tascam_stop_pcm_work_handler(struct work_struct *work)
 {
 	struct tascam_card *tascam = container_of(work, struct tascam_card, stop_pcm_work);
+	struct snd_pcm_substream *pb, *cap;
+	unsigned long flags;
 
-	if (tascam->dev && tascam->playback_substream)
-		snd_pcm_stop(tascam->playback_substream, SNDRV_PCM_STATE_XRUN);
-	if (tascam->dev && tascam->capture_substream)
-		snd_pcm_stop(tascam->capture_substream, SNDRV_PCM_STATE_XRUN);
+	if (!tascam || !tascam->dev)
+		return;
+
+	spin_lock_irqsave(&tascam->lock, flags);
+	pb = tascam->playback_substream;
+	cap = tascam->capture_substream;
+	spin_unlock_irqrestore(&tascam->lock, flags);
+
+	if (pb)
+		snd_pcm_stop(pb, SNDRV_PCM_STATE_XRUN);
+	if (cap)
+		snd_pcm_stop(cap, SNDRV_PCM_STATE_XRUN);
 }
diff --git a/us144mkii_playback.c b/us144mkii_playback.c
index 402cbbb..c15368a 100644
--- a/us144mkii_playback.c
+++ b/us144mkii_playback.c
@@ -5,8 +5,7 @@
 
 const struct snd_pcm_hardware tascam_playback_hw = {
 	.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
-	SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID |
-	SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
+	SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
 	.formats = SNDRV_PCM_FMTBIT_S24_3LE,
 	.rates = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
 	SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000),