3 files changed, 16 insertions, 0 deletions
diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index 0e9b5431a47f..faac7df1fbcf 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -383,6 +383,13 @@ static const struct usbmix_name_map ms_usb_link_map[] = {
 	{ 0 }   /* terminator */
 };
 
+/* KTMicro USB */
+static struct usbmix_name_map s31b2_0022_map[] = {
+	{ 23, "Speaker Playback" },
+	{ 18, "Headphone Playback" },
+	{ 0 }
+};
+
 /* ASUS ROG Zenith II with Realtek ALC1220-VB */
 static const struct usbmix_name_map asus_zenith_ii_map[] = {
 	{ 19, NULL, 12 }, /* FU, Input Gain Pad - broken response, disabled */
@@ -692,6 +699,11 @@ static const struct usbmix_ctl_map usbmix_ctl_maps[] = {
 		.id = USB_ID(0x045e, 0x083c),
 		.map = ms_usb_link_map,
 	},
+	{
+		/* KTMicro USB */
+		.id = USB_ID(0X31b2, 0x0022),
+		.map = s31b2_0022_map,
+	},
 	{ 0 } /* terminator */
 };
 
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index c7387081577c..0da4ee9757c0 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2282,6 +2282,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
 	DEVICE_FLG(0x17aa, 0x104d, /* Lenovo ThinkStation P620 Internal Speaker + Front Headset */
 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
+	DEVICE_FLG(0x17ef, 0x3083, /* Lenovo TBT3 dock */
+		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x1852, 0x5062, /* Luxman D-08u */
 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
 	DEVICE_FLG(0x1852, 0x5065, /* Luxman DA-06 */
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index c1ea8844a46f..aa91d63749f2 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -987,6 +987,8 @@ snd_usb_get_audioformat_uac3(struct snd_usb_audio *chip,
 	 * and request Cluster Descriptor
 	 */
 	wLength = le16_to_cpu(hc_header.wLength);
+	if (wLength < sizeof(cluster))
+		return NULL;
 	cluster = kzalloc(wLength, GFP_KERNEL);
 	if (!cluster)
 		return ERR_PTR(-ENOMEM);