From ea4dea83944ac6334d31e0364dd674eda250adde Mon Sep 17 00:00:00 2001
From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
Date: Thu, 1 Jul 2021 13:14:19 +0000
Subject: [PATCH] LinuxKPI: add sign_extend32()

Add sign_extend32() replicating the 64 version.  This is needed by
the rtw88 driver.

MFC after:	10 days
Reviewed by:	imp, emaste, hselasky
Differential Revision: https://reviews.freebsd.org/D30979
---
 sys/compat/linuxkpi/common/include/linux/bitops.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/bitops.h b/sys/compat/linuxkpi/common/include/linux/bitops.h
index 49bfc4cc741..0d7ab376e02 100644
--- a/sys/compat/linuxkpi/common/include/linux/bitops.h
+++ b/sys/compat/linuxkpi/common/include/linux/bitops.h
@@ -412,4 +412,12 @@ sign_extend64(uint64_t value, int index)
 	return ((int64_t)(value << shift) >> shift);
 }
 
+static inline uint32_t
+sign_extend32(uint32_t value, int index)
+{
+	uint8_t shift = 31 - index;
+
+	return ((int32_t)(value << shift) >> shift);
+}
+
 #endif	/* _LINUX_BITOPS_H_ */