From e35a65ae454be96bbf5ce61f05b1c43d1eb0aa28 Mon Sep 17 00:00:00 2001
From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Date: Wed, 24 Nov 2021 08:20:20 +0200
Subject: [PATCH] intel/ds: don't forget to reset upper dword timestamp read

This could lead to confusing if the 32bits roll over (every ~6mn or
so).

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 4ef6698a265fd9 ("intel/ds: drop timestamp correlation code")
Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Acked-by: Antonio Caggiano <antonio.caggiano@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13996>
---
 src/intel/ds/intel_pps_driver.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/intel/ds/intel_pps_driver.cc b/src/intel/ds/intel_pps_driver.cc
index 56f08dd64fb..5d94f31af81 100644
--- a/src/intel/ds/intel_pps_driver.cc
+++ b/src/intel/ds/intel_pps_driver.cc
@@ -167,6 +167,7 @@ void IntelDriver::enable_perfcnt(uint64_t sampling_period_ns)
 
 void IntelDriver::disable_perfcnt()
 {
+   gpu_timestamp_udw = 0;
    perf = nullptr;
    groups.clear();
    counters.clear();