linux-kernel - [PATCH v2 0/2] arch/*/io.h: remove ioremap

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Date:   Wed,  1 Mar 2023 18:22:06 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-arch@...r.kernel.org, linux-mm@...ck.org, arnd@...db.de,
        geert@...ux-m68k.org, hch@...radead.org, mcgrof@...nel.org,
        Baoquan He <bhe@...hat.com>
Subject: [PATCH v2 0/2] arch/*/io.h: remove ioremap_uc in some architectures

This patchset tries to remove ioremap_uc() in the current architectures
except of x86 and ia64. They will use the default ioremap_uc definition
in <asm-generic/io.h> which returns NULL.

If any arch sees a breakage caused by the default ioremap_uc(), it can
provide a sepcific one for its own usage.

v1->v2:
  - Update log of patch 2, and document related to ioremap_uc()
    according to Geert's comment.
  - Add Geert's Acked-by.

Baoquan He (2):
  mips: add <asm-generic/io.h> including
  arch/*/io.h: remove ioremap_uc in some architectures

 Documentation/driver-api/device-io.rst | 11 ++++--
 arch/alpha/include/asm/io.h            |  1 -
 arch/hexagon/include/asm/io.h          |  3 --
 arch/m68k/include/asm/kmap.h           |  1 -
 arch/mips/include/asm/io.h             | 47 +++++++++++++++++++++++++-
 arch/mips/include/asm/mmiowb.h         |  2 --
 arch/parisc/include/asm/io.h           |  2 --
 arch/powerpc/include/asm/io.h          |  1 -
 arch/sh/include/asm/io.h               |  2 --
 arch/sparc/include/asm/io_64.h         |  1 -
 10 files changed, 55 insertions(+), 16 deletions(-)

-- 
2.34.1