The upstream fix https://github.com/opencv/opencv/pull/21614

and remove the previous workaround

8d88bb06b230b5c4b5bca78d84102f5d1adf48cf.patch

@@ -0,0 +1,23 @@
+From 8d88bb06b230b5c4b5bca78d84102f5d1adf48cf Mon Sep 17 00:00:00 2001
+From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
+Date: Tue, 15 Feb 2022 07:23:32 +0300
+Subject: [PATCH] core(vsx): update vec_absd() workaround condition
+
+---
+ modules/core/include/opencv2/core/vsx_utils.hpp | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/modules/core/include/opencv2/core/vsx_utils.hpp b/modules/core/include/opencv2/core/vsx_utils.hpp
+index 68863ffb36f2..5cbc066784d0 100644
+--- a/modules/core/include/opencv2/core/vsx_utils.hpp
++++ b/modules/core/include/opencv2/core/vsx_utils.hpp
+@@ -684,7 +684,8 @@ VSX_IMPL_LOAD_L8(vec_double2, double)
+ #endif
+ 
+ // absolute difference
+-#ifndef vec_absd
++#ifndef _ARCH_PWR9
++#   undef vec_absd
+ #   define vec_absd(a, b) vec_sub(vec_max(a, b), vec_min(a, b))
+ #endif
+ 

opencv.spec

@@ -50,7 +50,7 @@ Name:           opencv
 Version:        4.5.5
 %global javaver %(foo=%{version}; echo ${foo//./})
 %global abiver  %(foo=%{version}; echo ${foo:0:3})
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        Collection of algorithms for computer vision
 # This is normal three clause BSD.
 License:        BSD
@@ -70,7 +70,8 @@ Source4:        b624b995ec9c439cbc2e9e6ee940d3a2-v0.1.1f.zip
 Source5:        xorg.conf
 
 Patch0:         opencv-4.1.0-install_3rdparty_licenses.patch
-Patch1:         81a6d1b0d4d93a3330cc99fbb1601c90b9516a9c.patch
+Patch1:         https://github.com/opencv/opencv/commit/81a6d1b0d4d93a3330cc99fbb1601c90b9516a9c.patch
+Patch2:         https://github.com/opencv/opencv/commit/8d88bb06b230b5c4b5bca78d84102f5d1adf48cf.patch
 
 BuildRequires:  gcc-c++
 BuildRequires:  cmake >= 2.6.3
@@ -251,6 +252,7 @@ popd &>/dev/null
 
 %patch0 -p1 -b .install_3rdparty_licenses
 %patch1 -p1 -R -b .soversion
+%patch2 -p1 -b .ppc64le_builtin_altivec_vadub
 
 pushd %{name}_contrib-%{version}
 #patch1 -p1 -b .install_cvv
@@ -268,15 +270,6 @@ popd
 mkdir -p .cache/ade
 install -pm 0644 %{SOURCE4} .cache/ade/
 
-%ifarch ppc64le
-# Disable some altivec vectorization optimization on ppc64le (bug 2051193)
-# Workaround is to force defining CV_FORCE_SIMD128_CPP on ppc64le so as NOT to use intrin_vsx.hpp .
-# https://github.com/opencv/opencv/issues/21465
-# https://github.com/opencv/opencv/issues/19020
-sed -i modules/core/include/opencv2/core/hal/intrin.hpp \
-	-e '\@ifdef CV_FORCE_SIMD128_CPP@i #define CV_FORCE_SIMD128_CPP'
-%endif
-
 %build
 # enabled by default if libraries are presents at build time:
 # GTK, GSTREAMER, 1394, V4L, eigen3
@@ -491,6 +484,10 @@ ln -s -r %{buildroot}%{_jnidir}/opencv-%{javaver}.jar %{buildroot}%{_jnidir}/ope
 %{_libdir}/libopencv_xphoto.so.%{abiver}*
 
 %changelog
+* Tue Feb 15 2022 Sérgio Basto <sergio@serjux.com> - 4.5.5-5
+- The upstream fix https://github.com/opencv/opencv/pull/21614
+  and remove the previous workaround
+
 * Sun Feb 13 2022 Mamoru TASAKA <mtasaka@fedoraproject.org> - 4.5.5-4
 - Disable some altivec vectorization optimization on ppc64le (bug 2051193)