From 83ffb252fae8faeace89ed066c0ec37376824ff2 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 30 May 2019 09:08:52 +1000
Subject: [PATCH] Ratelimit the device type mismatch warning

This message still happens when the software buttons are pressed and
immediately after plug. Since the actual events just fall through and don't
cause any state changes, let's ratelimit the message so it doesn't fill up the
logs.

https://bugzilla.redhat.com/show_bug.cgi?id=1642197

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 src/wcmUSB.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/wcmUSB.c b/src/wcmUSB.c
index 2f0e1d7..481646d 100644
--- a/src/wcmUSB.c
+++ b/src/wcmUSB.c
@@ -1788,10 +1788,19 @@ static void usbDispatchEvents(InputInfoPtr pInfo)
 	ds = &common->wcmChannel[channel].work;
 	dslast = common->wcmChannel[channel].valid.state;
 
-	if (ds->device_type && ds->device_type != private->wcmDeviceType)
-		LogMessageVerbSigSafe(X_ERROR, 0,
-				      "usbDispatchEvents: Device Type mismatch - %d -> %d. This is a BUG.\n",
-				      ds->device_type, private->wcmDeviceType);
+	if (ds->device_type && ds->device_type != private->wcmDeviceType) {
+		static int warnings = 0;
+
+		if (warnings < 5) {
+			warnings++;
+			LogMessageVerbSigSafe(X_ERROR, 0,
+					      "usbDispatchEvents: Device Type mismatch - %d -> %d. This is a BUG.\n",
+					      ds->device_type, private->wcmDeviceType);
+			if (warnings == 5)
+				LogMessageVerbSigSafe(X_ERROR, 0,
+						      "usbDispatchEvents: above bug warning is suppressed now\n");
+		}
+	}
 	/* no device type? */
 	if (!ds->device_type && private->wcmDeviceType) {
 		ds->device_type = private->wcmDeviceType;
-- 
2.21.0