[RFC/PATCH 11/45] usb: dwc3: debug: move dwc3_ep0_state_string() to debug.h

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We will be using dwc3_ep0_state_string() from within
our tracepoints, so we need to move that helper to
debug.h in order for it to be accessible.

Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
---
 drivers/usb/dwc3/debug.h | 16 ++++++++++++++++
 drivers/usb/dwc3/ep0.c   | 16 ----------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h
index fe8abee31551..61b6f0f207cf 100644
--- a/drivers/usb/dwc3/debug.h
+++ b/drivers/usb/dwc3/debug.h
@@ -124,6 +124,22 @@ dwc3_gadget_link_string(enum dwc3_link_state link_state)
 	}
 }
 
+static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
+{
+	switch (state) {
+	case EP0_UNCONNECTED:
+		return "Unconnected";
+	case EP0_SETUP_PHASE:
+		return "Setup Phase";
+	case EP0_DATA_PHASE:
+		return "Data Phase";
+	case EP0_STATUS_PHASE:
+		return "Status Phase";
+	default:
+		return "UNKNOWN";
+	}
+}
+
 /**
  * dwc3_gadget_event_string - returns event name
  * @event: the event code
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 2d2f582068cb..1be54712147e 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -39,22 +39,6 @@ static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep);
 static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
 		struct dwc3_ep *dep, struct dwc3_request *req);
 
-static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
-{
-	switch (state) {
-	case EP0_UNCONNECTED:
-		return "Unconnected";
-	case EP0_SETUP_PHASE:
-		return "Setup Phase";
-	case EP0_DATA_PHASE:
-		return "Data Phase";
-	case EP0_STATUS_PHASE:
-		return "Status Phase";
-	default:
-		return "UNKNOWN";
-	}
-}
-
 static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
 		u32 len, u32 type, bool chain)
 {
-- 
2.10.0.440.g21f862b

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