diff --git a/include/linux/usb/midi-v2.h b/include/linux/usb/midi-v2.h
index ebbffcae0417..16f09d959a2d 100644
--- a/include/linux/usb/midi-v2.h
+++ b/include/linux/usb/midi-v2.h
@@ -73,7 +73,7 @@ struct usb_ms20_gr_trm_block_header_descriptor {
 	__u8  bLength;			/* 5 */
 	__u8  bDescriptorType;		/* USB_DT_CS_GR_TRM_BLOCK */
 	__u8  bDescriptorSubtype;	/* USB_MS_GR_TRM_BLOCK_HEADER */
-	__u16 wTotalLength;		/* Total number of bytes */
+	__le16 wTotalLength;		/* Total number of bytes */
 } __packed;
 
 /* 5.4.2.1 Group Terminal Block Descriptor */
@@ -87,8 +87,8 @@ struct usb_ms20_gr_trm_block_descriptor {
 	__u8  nNumGroupTrm;		/* Number of member Group Terminals spanned */
 	__u8  iBlockItem;		/* String ID of Block item */
 	__u8  bMIDIProtocol;		/* Default MIDI protocol */
-	__u16 wMaxInputBandwidth;	/* Max input bandwidth capability in 4kB/s */
-	__u16 wMaxOutputBandwidth;	/* Max output bandwidth capability in 4kB/s */
+	__le16 wMaxInputBandwidth;	/* Max input bandwidth capability in 4kB/s */
+	__le16 wMaxOutputBandwidth;	/* Max output bandwidth capability in 4kB/s */
 } __packed;
 
 #endif /* __LINUX_USB_MIDI_V2_H */
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 948ae45e0cc3..e3f9ea67d019 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -451,7 +451,7 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count,
 	err = 0;
 	snd_seq_fifo_lock(fifo);
 
-	if (client->midi_version > 0)
+	if (IS_ENABLED(CONFIG_SND_SEQ_UMP) && client->midi_version > 0)
 		aligned_size = sizeof(struct snd_seq_ump_event);
 	else
 		aligned_size = sizeof(struct snd_seq_event);