linux-kernel - linux-next: build warning after merge of the swiotlb tree

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Message-ID: <20210616113835.0f0d4952@canb.auug.org.au>
Date:   Wed, 16 Jun 2021 11:38:35 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:     Bumyong Lee <bumyong.lee@...sung.com>,
        Chanho Park <chanho61.park@...sung.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build warning after merge of the swiotlb tree

Hi all,

After merging the swiotlb tree, today's linux-next build (powerpc
ppc64_defconfig and x86_64 allmodconfig) produced this warning:

In file included from arch/powerpc/include/asm/bug.h:109,
                 from include/linux/bug.h:5,
                 from arch/powerpc/include/asm/mmu.h:147,
                 from arch/powerpc/include/asm/lppaca.h:46,
                 from arch/powerpc/include/asm/paca.h:17,
                 from arch/powerpc/include/asm/current.h:13,
                 from include/linux/sched.h:12,
                 from include/linux/ratelimit.h:6,
                 from include/linux/dev_printk.h:16,
                 from include/linux/device.h:15,
                 from include/linux/dma-mapping.h:7,
                 from include/linux/dma-direct.h:9,
                 from kernel/dma/swiotlb.c:24:
kernel/dma/swiotlb.c: In function 'swiotlb_bounce':
include/linux/dev_printk.h:242:23: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'unsigned int' [-Wformat=]
  242 |  WARN_ONCE(condition, "%s %s: " format, \
      |                       ^~~~~~~~~
include/asm-generic/bug.h:97:17: note: in definition of macro '__WARN_printf'
   97 |   __warn_printk(arg);     \
      |                 ^~~
include/asm-generic/bug.h:161:3: note: in expansion of macro 'WARN'
  161 |   WARN(1, format);    \
      |   ^~~~
include/linux/dev_printk.h:242:2: note: in expansion of macro 'WARN_ONCE'
  242 |  WARN_ONCE(condition, "%s %s: " format, \
      |  ^~~~~~~~~
kernel/dma/swiotlb.c:355:3: note: in expansion of macro 'dev_WARN_ONCE'
  355 |   dev_WARN_ONCE(dev, 1,
      |   ^~~~~~~~~~~~~

Introduced by commit

  17eb5dcf1f15 ("swiotlb: manipulate orig_addr when tlb_addr has offset")

-- 
Cheers,
Stephen Rothwell

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