linux-kernel - [PATCH v2] mtd: parsers: scpart: fix _

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Date:   Thu, 8 Dec 2022 23:28:29 +0300
From:   Mikhail Zhilkin <csharper2005@...il.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        NOGUCHI Hiroshi <drvlabo@...il.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH v2] mtd: parsers: scpart: fix __udivdi3 undefined on mips

This fixes the following compile error on mips architecture with clang
version 16.0.0 reported by the 0-DAY CI Kernel Test Service:
   ld.lld: error: undefined symbol: __udivdi3
   referenced by scpart.c
   mtd/parsers/scpart.o:(scpart_parse) in archive drivers/built-in.a

As a workaround this makes 'offs' a 32-bit type. This is enough, because
the mtd containing partition table practically does not exceed 1 MB. We
can revert this when the [Link] has been resolved.

Link: https://github.com/ClangBuiltLinux/linux/issues/1635
Fixes: 9b78ef0c7997 ("mtd: parsers: add support for Sercomm partitions")
Reported-by: kernel test robot <lkp@...el.com>
Suggested-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Mikhail Zhilkin <csharper2005@...il.com>
---
 drivers/mtd/parsers/scpart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/parsers/scpart.c b/drivers/mtd/parsers/scpart.c
index 02601bb33de4..6e5e11c37078 100644
--- a/drivers/mtd/parsers/scpart.c
+++ b/drivers/mtd/parsers/scpart.c
@@ -50,7 +50,7 @@ static int scpart_scan_partmap(struct mtd_info *master, loff_t partmap_offs,
 	int cnt = 0;
 	int res = 0;
 	int res2;
-	loff_t offs;
+	uint32_t offs;
 	size_t retlen;
 	struct sc_part_desc *pdesc = NULL;
 	struct sc_part_desc *tmpdesc;
-- 
2.34.1