diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h
index 9baabed87d61..068259fdfb0c 100644
--- a/drivers/usb/dwc3/debug.h
+++ b/drivers/usb/dwc3/debug.h
@@ -246,6 +246,258 @@ static inline const char *dwc3_gadget_event_string(char *str, size_t size,
 	return str;
 }
 
+static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str,
+		size_t size)
+{
+	switch (t & USB_RECIP_MASK) {
+	case USB_RECIP_DEVICE:
+		snprintf(str, size, "Get Device Status(Length = %d)", l);
+		break;
+	case USB_RECIP_INTERFACE:
+		snprintf(str, size, "Get Interface Status(Intf = %d, Length = %d)",
+				i, l);
+		break;
+	case USB_RECIP_ENDPOINT:
+		snprintf(str, size, "Get Endpoint Status(ep%d%s)",
+			i & ~USB_DIR_IN,
+			i & USB_DIR_IN ? "in" : "out");
+		break;
+	}
+}
+
+static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v,
+		__u16 i, char *str, size_t size)
+{
+	switch (t & USB_RECIP_MASK) {
+	case USB_RECIP_DEVICE:
+		snprintf(str, size, "%s Device Feature(%s%s)",
+			b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
+			({char *s;
+				switch (v) {
+				case USB_DEVICE_SELF_POWERED:
+					s = "Self Powered";
+					break;
+				case USB_DEVICE_REMOTE_WAKEUP:
+					s = "Remote Wakeup";
+					break;
+				case USB_DEVICE_TEST_MODE:
+					s = "Test Mode";
+					break;
+				case USB_DEVICE_U1_ENABLE:
+					s = "U1 Enable";
+					break;
+				case USB_DEVICE_U2_ENABLE:
+					s = "U2 Enable";
+					break;
+				case USB_DEVICE_LTM_ENABLE:
+					s = "LTM Enable";
+					break;
+				default:
+					s = "UNKNOWN";
+				} s; }),
+			v == USB_DEVICE_TEST_MODE ?
+			({ char *s;
+				switch (i) {
+				case TEST_J:
+					s = ": TEST_J";
+					break;
+				case TEST_K:
+					s = ": TEST_K";
+					break;
+				case TEST_SE0_NAK:
+					s = ": TEST_SE0_NAK";
+					break;
+				case TEST_PACKET:
+					s = ": TEST_PACKET";
+					break;
+				case TEST_FORCE_EN:
+					s = ": TEST_FORCE_EN";
+					break;
+				default:
+					s = ": UNKNOWN";
+				} s; }) : "");
+		break;
+	case USB_RECIP_INTERFACE:
+		snprintf(str, size, "%s Interface Feature(%s)",
+			b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
+			v == USB_INTRF_FUNC_SUSPEND ?
+			"Function Suspend" : "UNKNOWN");
+		break;
+	case USB_RECIP_ENDPOINT:
+		snprintf(str, size, "%s Endpoint Feature(%s ep%d%s)",
+			b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
+			v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
+			i & ~USB_DIR_IN,
+			i & USB_DIR_IN ? "in" : "out");
+		break;
+	}
+}
+
+static inline void dwc3_decode_set_address(__u16 v, char *str, size_t size)
+{
+	snprintf(str, size, "Set Address(Addr = %02x)", v);
+}
+
+static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v,
+		__u16 i, __u16 l, char *str, size_t size)
+{
+	snprintf(str, size, "%s %s Descriptor(Index = %d, Length = %d)",
+		b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
+		({ char *s;
+			switch (v >> 8) {
+			case USB_DT_DEVICE:
+				s = "Device";
+				break;
+			case USB_DT_CONFIG:
+				s = "Configuration";
+				break;
+			case USB_DT_STRING:
+				s = "String";
+				break;
+			case USB_DT_INTERFACE:
+				s = "Interface";
+				break;
+			case USB_DT_ENDPOINT:
+				s = "Endpoint";
+				break;
+			case USB_DT_DEVICE_QUALIFIER:
+				s = "Device Qualifier";
+				break;
+			case USB_DT_OTHER_SPEED_CONFIG:
+				s = "Other Speed Config";
+				break;
+			case USB_DT_INTERFACE_POWER:
+				s = "Interface Power";
+				break;
+			case USB_DT_OTG:
+				s = "OTG";
+				break;
+			case USB_DT_DEBUG:
+				s = "Debug";
+				break;
+			case USB_DT_INTERFACE_ASSOCIATION:
+				s = "Interface Association";
+				break;
+			case USB_DT_BOS:
+				s = "BOS";
+				break;
+			case USB_DT_DEVICE_CAPABILITY:
+				s = "Device Capability";
+				break;
+			case USB_DT_PIPE_USAGE:
+				s = "Pipe Usage";
+				break;
+			case USB_DT_SS_ENDPOINT_COMP:
+				s = "SS Endpoint Companion";
+				break;
+			case USB_DT_SSP_ISOC_ENDPOINT_COMP:
+				s = "SSP Isochronous Endpoint Companion";
+				break;
+			default:
+				s = "UNKNOWN";
+				break;
+			} s; }), v & 0xff, l);
+}
+
+
+static inline void dwc3_decode_get_configuration(__u16 l, char *str,
+		size_t size)
+{
+	snprintf(str, size, "Get Configuration(Length = %d)", l);
+}
+
+static inline void dwc3_decode_set_configuration(__u8 v, char *str, size_t size)
+{
+	snprintf(str, size, "Set Configuration(Config = %d)", v);
+}
+
+static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str,
+		size_t size)
+{
+	snprintf(str, size, "Get Interface(Intf = %d, Length = %d)", i, l);
+}
+
+static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str, size_t size)
+{
+	snprintf(str, size, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v);
+}
+
+static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str,
+		size_t size)
+{
+	snprintf(str, size, "Synch Frame(Endpoint = %d, Length = %d)", i, l);
+}
+
+static inline void dwc3_decode_set_sel(__u16 l, char *str, size_t size)
+{
+	snprintf(str, size, "Set SEL(Length = %d)", l);
+}
+
+static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str, size_t size)
+{
+	snprintf(str, size, "Set Isochronous Delay(Delay = %d ns)", v);
+}
+
+/**
+ * dwc3_decode_ctrl - returns a string represetion of ctrl request
+ */
+static inline const char *dwc3_decode_ctrl(char *str, size_t size,
+		__u8 bRequestType, __u8 bRequest, __u16 wValue, __u16 wIndex,
+		__u16 wLength)
+{
+	switch (bRequest) {
+	case USB_REQ_GET_STATUS:
+		dwc3_decode_get_status(bRequestType, wIndex, wLength, str,
+				size);
+		break;
+	case USB_REQ_CLEAR_FEATURE:
+	case USB_REQ_SET_FEATURE:
+		dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue,
+				wIndex, str, size);
+		break;
+	case USB_REQ_SET_ADDRESS:
+		dwc3_decode_set_address(wValue, str, size);
+		break;
+	case USB_REQ_GET_DESCRIPTOR:
+	case USB_REQ_SET_DESCRIPTOR:
+		dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue,
+				wIndex, wLength, str, size);
+		break;
+	case USB_REQ_GET_CONFIGURATION:
+		dwc3_decode_get_configuration(wLength, str, size);
+		break;
+	case USB_REQ_SET_CONFIGURATION:
+		dwc3_decode_set_configuration(wValue, str, size);
+		break;
+	case USB_REQ_GET_INTERFACE:
+		dwc3_decode_get_intf(wIndex, wLength, str, size);
+		break;
+	case USB_REQ_SET_INTERFACE:
+		dwc3_decode_set_intf(wValue, wIndex, str, size);
+		break;
+	case USB_REQ_SYNCH_FRAME:
+		dwc3_decode_synch_frame(wIndex, wLength, str, size);
+		break;
+	case USB_REQ_SET_SEL:
+		dwc3_decode_set_sel(wLength, str, size);
+		break;
+	case USB_REQ_SET_ISOCH_DELAY:
+		dwc3_decode_set_isoch_delay(wValue, str, size);
+		break;
+	default:
+		snprintf(str, size, "%02x %02x %02x %02x %02x %02x %02x %02x",
+			bRequestType, bRequest,
+			cpu_to_le16(wValue) & 0xff,
+			cpu_to_le16(wValue) >> 8,
+			cpu_to_le16(wIndex) & 0xff,
+			cpu_to_le16(wIndex) >> 8,
+			cpu_to_le16(wLength) & 0xff,
+			cpu_to_le16(wLength) >> 8);
+	}
+
+	return str;
+}
+
 /**
  * dwc3_ep_event_string - returns event name
  * @event: then event code
diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h
index 9edff17111f7..818a63da1a44 100644
--- a/drivers/usb/dwc3/trace.h
+++ b/drivers/usb/dwc3/trace.h
@@ -86,7 +86,7 @@ DECLARE_EVENT_CLASS(dwc3_log_ctrl,
 		__entry->wIndex = le16_to_cpu(ctrl->wIndex);
 		__entry->wLength = le16_to_cpu(ctrl->wLength);
 	),
-	TP_printk("%s", usb_decode_ctrl(__get_str(str), DWC3_MSG_MAX,
+	TP_printk("%s", dwc3_decode_ctrl(__get_str(str), DWC3_MSG_MAX,
 					__entry->bRequestType,
 					__entry->bRequest, __entry->wValue,
 					__entry->wIndex, __entry->wLength)
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 500a5a592abe..130dad7130b6 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -9,6 +9,5 @@ ccflags-y				+= -I$(srctree)/drivers/usb/gadget/udc
 obj-$(CONFIG_USB_LIBCOMPOSITE)	+= libcomposite.o
 libcomposite-y			:= usbstring.o config.o epautoconf.o
 libcomposite-y			+= composite.o functions.o configfs.o u_f.o
-libcomposite-y			+= debug.o
 
 obj-$(CONFIG_USB_GADGET)	+= udc/ function/ legacy/
diff --git a/drivers/usb/gadget/debug.c b/drivers/usb/gadget/debug.c
deleted file mode 100644
index d5a469bc67a3..000000000000
--- a/drivers/usb/gadget/debug.c
+++ /dev/null
@@ -1,268 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/**
- * Common USB debugging functions
- *
- * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
- *
- * Authors: Felipe Balbi <balbi@ti.com>,
- *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
- */
-
-#include <linux/usb/ch9.h>
-
-static void usb_decode_get_status(__u8 bRequestType, __u16 wIndex,
-				  __u16 wLength, char *str, size_t size)
-{
-	switch (bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_DEVICE:
-		snprintf(str, size, "Get Device Status(Length = %d)", wLength);
-		break;
-	case USB_RECIP_INTERFACE:
-		snprintf(str, size,
-			 "Get Interface Status(Intf = %d, Length = %d)",
-			 wIndex, wLength);
-		break;
-	case USB_RECIP_ENDPOINT:
-		snprintf(str, size, "Get Endpoint Status(ep%d%s)",
-			 wIndex & ~USB_DIR_IN,
-			 wIndex & USB_DIR_IN ? "in" : "out");
-		break;
-	}
-}
-
-static void usb_decode_set_clear_feature(__u8 bRequestType, __u8 bRequest,
-					 __u16 wValue, __u16 wIndex,
-					 char *str, size_t size)
-{
-	switch (bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_DEVICE:
-		snprintf(str, size, "%s Device Feature(%s%s)",
-			 bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
-			 ({char *s;
-				switch (wValue) {
-				case USB_DEVICE_SELF_POWERED:
-					s = "Self Powered";
-					break;
-				case USB_DEVICE_REMOTE_WAKEUP:
-					s = "Remote Wakeup";
-					break;
-				case USB_DEVICE_TEST_MODE:
-					s = "Test Mode";
-					break;
-				case USB_DEVICE_U1_ENABLE:
-					s = "U1 Enable";
-					break;
-				case USB_DEVICE_U2_ENABLE:
-					s = "U2 Enable";
-					break;
-				case USB_DEVICE_LTM_ENABLE:
-					s = "LTM Enable";
-					break;
-				default:
-					s = "UNKNOWN";
-				} s; }),
-			 wValue == USB_DEVICE_TEST_MODE ?
-			 ({ char *s;
-				switch (wIndex) {
-				case TEST_J:
-					s = ": TEST_J";
-					break;
-				case TEST_K:
-					s = ": TEST_K";
-					break;
-				case TEST_SE0_NAK:
-					s = ": TEST_SE0_NAK";
-					break;
-				case TEST_PACKET:
-					s = ": TEST_PACKET";
-					break;
-				case TEST_FORCE_EN:
-					s = ": TEST_FORCE_EN";
-					break;
-				default:
-					s = ": UNKNOWN";
-				} s; }) : "");
-		break;
-	case USB_RECIP_INTERFACE:
-		snprintf(str, size, "%s Interface Feature(%s)",
-			 bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
-			 wValue == USB_INTRF_FUNC_SUSPEND ?
-			 "Function Suspend" : "UNKNOWN");
-		break;
-	case USB_RECIP_ENDPOINT:
-		snprintf(str, size, "%s Endpoint Feature(%s ep%d%s)",
-			 bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
-			 wValue == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
-			 wIndex & ~USB_DIR_IN,
-			 wIndex & USB_DIR_IN ? "in" : "out");
-		break;
-	}
-}
-
-static void usb_decode_set_address(__u16 wValue, char *str, size_t size)
-{
-	snprintf(str, size, "Set Address(Addr = %02x)", wValue);
-}
-
-static void usb_decode_get_set_descriptor(__u8 bRequestType, __u8 bRequest,
-					  __u16 wValue, __u16 wIndex,
-					  __u16 wLength, char *str, size_t size)
-{
-	snprintf(str, size, "%s %s Descriptor(Index = %d, Length = %d)",
-		 bRequest == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
-		 ({ char *s;
-			switch (wValue >> 8) {
-			case USB_DT_DEVICE:
-				s = "Device";
-				break;
-			case USB_DT_CONFIG:
-				s = "Configuration";
-				break;
-			case USB_DT_STRING:
-				s = "String";
-				break;
-			case USB_DT_INTERFACE:
-				s = "Interface";
-				break;
-			case USB_DT_ENDPOINT:
-				s = "Endpoint";
-				break;
-			case USB_DT_DEVICE_QUALIFIER:
-				s = "Device Qualifier";
-				break;
-			case USB_DT_OTHER_SPEED_CONFIG:
-				s = "Other Speed Config";
-				break;
-			case USB_DT_INTERFACE_POWER:
-				s = "Interface Power";
-				break;
-			case USB_DT_OTG:
-				s = "OTG";
-				break;
-			case USB_DT_DEBUG:
-				s = "Debug";
-				break;
-			case USB_DT_INTERFACE_ASSOCIATION:
-				s = "Interface Association";
-				break;
-			case USB_DT_BOS:
-				s = "BOS";
-				break;
-			case USB_DT_DEVICE_CAPABILITY:
-				s = "Device Capability";
-				break;
-			case USB_DT_PIPE_USAGE:
-				s = "Pipe Usage";
-				break;
-			case USB_DT_SS_ENDPOINT_COMP:
-				s = "SS Endpoint Companion";
-				break;
-			case USB_DT_SSP_ISOC_ENDPOINT_COMP:
-				s = "SSP Isochronous Endpoint Companion";
-				break;
-			default:
-				s = "UNKNOWN";
-				break;
-			} s; }), wValue & 0xff, wLength);
-}
-
-static void usb_decode_get_configuration(__u16 wLength, char *str, size_t size)
-{
-	snprintf(str, size, "Get Configuration(Length = %d)", wLength);
-}
-
-static void usb_decode_set_configuration(__u8 wValue, char *str, size_t size)
-{
-	snprintf(str, size, "Set Configuration(Config = %d)", wValue);
-}
-
-static void usb_decode_get_intf(__u16 wIndex, __u16 wLength, char *str,
-				size_t size)
-{
-	snprintf(str, size, "Get Interface(Intf = %d, Length = %d)",
-		 wIndex, wLength);
-}
-
-static void usb_decode_set_intf(__u8 wValue, __u16 wIndex, char *str,
-				size_t size)
-{
-	snprintf(str, size, "Set Interface(Intf = %d, Alt.Setting = %d)",
-		 wIndex, wValue);
-}
-
-static void usb_decode_synch_frame(__u16 wIndex, __u16 wLength,
-				   char *str, size_t size)
-{
-	snprintf(str, size, "Synch Frame(Endpoint = %d, Length = %d)",
-		 wIndex, wLength);
-}
-
-static void usb_decode_set_sel(__u16 wLength, char *str, size_t size)
-{
-	snprintf(str, size, "Set SEL(Length = %d)", wLength);
-}
-
-static void usb_decode_set_isoch_delay(__u8 wValue, char *str, size_t size)
-{
-	snprintf(str, size, "Set Isochronous Delay(Delay = %d ns)", wValue);
-}
-
-/**
- * usb_decode_ctrl - returns a string representation of ctrl request
- */
-const char *usb_decode_ctrl(char *str, size_t size, __u8 bRequestType,
-			    __u8 bRequest, __u16 wValue, __u16 wIndex,
-			    __u16 wLength)
-{
-	switch (bRequest) {
-	case USB_REQ_GET_STATUS:
-		usb_decode_get_status(bRequestType, wIndex, wLength, str, size);
-		break;
-	case USB_REQ_CLEAR_FEATURE:
-	case USB_REQ_SET_FEATURE:
-		usb_decode_set_clear_feature(bRequestType, bRequest, wValue,
-					     wIndex, str, size);
-		break;
-	case USB_REQ_SET_ADDRESS:
-		usb_decode_set_address(wValue, str, size);
-		break;
-	case USB_REQ_GET_DESCRIPTOR:
-	case USB_REQ_SET_DESCRIPTOR:
-		usb_decode_get_set_descriptor(bRequestType, bRequest, wValue,
-					      wIndex, wLength, str, size);
-		break;
-	case USB_REQ_GET_CONFIGURATION:
-		usb_decode_get_configuration(wLength, str, size);
-		break;
-	case USB_REQ_SET_CONFIGURATION:
-		usb_decode_set_configuration(wValue, str, size);
-		break;
-	case USB_REQ_GET_INTERFACE:
-		usb_decode_get_intf(wIndex, wLength, str, size);
-		break;
-	case USB_REQ_SET_INTERFACE:
-		usb_decode_set_intf(wValue, wIndex, str, size);
-		break;
-	case USB_REQ_SYNCH_FRAME:
-		usb_decode_synch_frame(wIndex, wLength, str, size);
-		break;
-	case USB_REQ_SET_SEL:
-		usb_decode_set_sel(wLength, str, size);
-		break;
-	case USB_REQ_SET_ISOCH_DELAY:
-		usb_decode_set_isoch_delay(wValue, str, size);
-		break;
-	default:
-		snprintf(str, size, "%02x %02x %02x %02x %02x %02x %02x %02x",
-			 bRequestType, bRequest,
-			 (u8)(cpu_to_le16(wValue) & 0xff),
-			 (u8)(cpu_to_le16(wValue) >> 8),
-			 (u8)(cpu_to_le16(wIndex) & 0xff),
-			 (u8)(cpu_to_le16(wIndex) >> 8),
-			 (u8)(cpu_to_le16(wLength) & 0xff),
-			 (u8)(cpu_to_le16(wLength) >> 8));
-	}
-
-	return str;
-}
-EXPORT_SYMBOL_GPL(usb_decode_ctrl);
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 42902fcc8696..fb19141151d8 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -889,30 +889,4 @@ extern void usb_ep_autoconfig_release(struct usb_ep *);
 
 extern void usb_ep_autoconfig_reset(struct usb_gadget *);
 
-/*-------------------------------------------------------------------------*/
-/**
- * usb_decode_ctrl - Returns human readable representation of control request.
- * @str: buffer to return a human-readable representation of control request.
- *       This buffer should have about 200 bytes.
- * @size: size of str buffer.
- * @bRequestType: matches the USB bmRequestType field
- * @bRequest: matches the USB bRequest field
- * @wValue: matches the USB wValue field (CPU byte order)
- * @wIndex: matches the USB wIndex field (CPU byte order)
- * @wLength: matches the USB wLength field (CPU byte order)
- *
- * Function returns decoded, formatted and human-readable description of
- * control request packet.
- *
- * The usage scenario for this is for tracepoints, so function as a return
- * use the same value as in parameters. This approach allows to use this
- * function in TP_printk
- *
- * Important: wValue, wIndex, wLength parameters before invoking this function
- * should be processed by le16_to_cpu macro.
- */
-extern const char *usb_decode_ctrl(char *str, size_t size, __u8 bRequestType,
-			__u8 bRequest, __u16 wValue, __u16 wIndex,
-			__u16 wLength);
-
 #endif /* __LINUX_USB_GADGET_H */