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Message-Id: <20220124184116.671697604@linuxfoundation.org>
Date:   Mon, 24 Jan 2022 19:39:32 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Nick Terrell <terrelln@...com>,
        Paul Cercueil <paul@...pouillou.net>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 455/846] MIPS: compressed: Fix build with ZSTD compression

From: Paul Cercueil <paul@...pouillou.net>

[ Upstream commit c5c7440fe7f74645940d5c9e2c49cd7efb706a4f ]

Fix the following build issues:

mips64el-linux-ld: arch/mips/boot/compressed/decompress.o: in function `FSE_buildDTable_internal':
 decompress.c:(.text.FSE_buildDTable_internal+0x2cc): undefined reference to `__clzdi2'
   mips64el-linux-ld: arch/mips/boot/compressed/decompress.o: in function `BIT_initDStream':
   decompress.c:(.text.BIT_initDStream+0x7c): undefined reference to `__clzdi2'
   mips64el-linux-ld: decompress.c:(.text.BIT_initDStream+0x158): undefined reference to `__clzdi2'
   mips64el-linux-ld: arch/mips/boot/compressed/decompress.o: in function `ZSTD_buildFSETable_body_default.constprop.0':
 decompress.c:(.text.ZSTD_buildFSETable_body_default.constprop.0+0x2a8): undefined reference to `__clzdi2'
   mips64el-linux-ld: arch/mips/boot/compressed/decompress.o: in function `FSE_readNCount_body_default':
 decompress.c:(.text.FSE_readNCount_body_default+0x130): undefined reference to `__ctzdi2'
 mips64el-linux-ld: decompress.c:(.text.FSE_readNCount_body_default+0x1a4): undefined reference to `__ctzdi2'
 mips64el-linux-ld: decompress.c:(.text.FSE_readNCount_body_default+0x2e4): undefined reference to `__clzdi2'
   mips64el-linux-ld: arch/mips/boot/compressed/decompress.o: in function `HUF_readStats_body_default':
 decompress.c:(.text.HUF_readStats_body_default+0x184): undefined reference to `__clzdi2'
 mips64el-linux-ld: decompress.c:(.text.HUF_readStats_body_default+0x1b4): undefined reference to `__clzdi2'
   mips64el-linux-ld: arch/mips/boot/compressed/decompress.o: in function `ZSTD_DCtx_getParameter':
 decompress.c:(.text.ZSTD_DCtx_getParameter+0x60): undefined reference to `__clzdi2'

Fixes: a510b616131f ("MIPS: Add support for ZSTD-compressed kernels")
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Nick Terrell <terrelln@...com>
Signed-off-by: Paul Cercueil <paul@...pouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/mips/boot/compressed/Makefile  | 2 +-
 arch/mips/boot/compressed/clz_ctz.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)
 create mode 100644 arch/mips/boot/compressed/clz_ctz.c

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index f53510d2f6296..705b9e7f8035a 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -56,7 +56,7 @@ $(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
 
 vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
 
-vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o
+vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o
 
 extra-y += ashldi3.c
 $(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
diff --git a/arch/mips/boot/compressed/clz_ctz.c b/arch/mips/boot/compressed/clz_ctz.c
new file mode 100644
index 0000000000000..b4a1b6eb2f8ad
--- /dev/null
+++ b/arch/mips/boot/compressed/clz_ctz.c
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include "../../../../lib/clz_ctz.c"
-- 
2.34.1



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