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From: Arnd Bergmann <arnd@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-arch <linux-arch@vger.kernel.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Niklas Schnelle <schnelle@linux.ibm.com>
Subject: [GIT PULL 1/2] asm-generic: rework PCI I/O space access
Date: Fri, 2 Jul 2021 15:47:51 +0200	[thread overview]
Message-ID: <CAK8P3a2oZ-+qd3Nhpy9VVXCJB3DU5N-y-ta2JpP0t6NHh=GVXw@mail.gmail.com> (raw)

The following changes since commit 6efb943b8616ec53a5e444193dccf1af9ad627b5:

  Linux 5.13-rc1 (2021-05-09 14:17:44 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git
tags/asm-generic-pci-ioport-5.14

for you to fetch changes up to 5ae6eadfdaf431f47adbdf1754f3b5a5fd638de2:

  asm-generic/io.h: warn in inb() and friends with undefined
PCI_IOBASE (2021-05-10 17:37:55 +0200)

----------------------------------------------------------------
asm-generic: rework PCI I/O space access

A rework for PCI I/O space access from Niklas Schnelle:

  "This is version 5 of my attempt to get rid of a clang
  -Wnull-pointer-arithmetic warning for the use of PCI_IOBASE in
  asm-generic/io.h. This was originally found on s390 but should apply to
  all platforms leaving PCI_IOBASE undefined while making use of the inb()
  and friends helpers from asm-generic/io.h.

  This applies cleanly and was compile tested on top of v5.12 for the
  previously broken ARC, nds32, h8300 and risc-v architecture. It also
  applies cleanly on v5.13-rc1 for which I boot tested it on s390.

  I did boot test this only on x86_64 and s390x the former implements
  inb() itself while the latter would emit a WARN_ONCE() but no drivers
  use inb().

Link: https://lore.kernel.org/lkml/20210510145234.594814-1-schnelle@linux.ibm.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

----------------------------------------------------------------
Niklas Schnelle (3):
      sparc: explicitly set PCI_IOBASE to 0
      risc-v: Use generic io.h helpers for nommu
      asm-generic/io.h: warn in inb() and friends with undefined PCI_IOBASE

 arch/riscv/include/asm/io.h |  5 +++--
 arch/sparc/include/asm/io.h |  8 ++++++++
 include/asm-generic/io.h    | 68
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 3 files changed, 75 insertions(+), 6 deletions(-)

             reply	other threads:[~2021-07-02 13:48 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-02 13:47 Arnd Bergmann [this message]
2021-07-02 13:49 ` [GIT PULL 2/2] asm-generic: Unify asm/unaligned.h around struct helper Arnd Bergmann
2021-07-02 20:13   ` pr-tracker-bot
2021-07-02 19:42 ` [GIT PULL 1/2] asm-generic: rework PCI I/O space access Linus Torvalds
2021-07-03 12:12   ` Arnd Bergmann
2021-07-05 10:06     ` Arnd Bergmann
2021-08-03  9:46       ` John Garry
2021-08-03 10:06         ` Arnd Bergmann
2021-08-03 11:23           ` John Garry
2021-08-03 12:15             ` Arnd Bergmann
2021-08-04  7:55               ` John Garry
2021-08-04  8:52                 ` Arnd Bergmann
2021-08-10  9:19                   ` John Garry
2021-08-10 11:33                     ` Arnd Bergmann
2021-09-03  8:31                       ` Niklas Schnelle
2021-12-17 13:19                       ` Niklas Schnelle
2021-12-17 13:32                         ` Arnd Bergmann
2021-12-17 13:52                           ` Niklas Schnelle
2021-12-17 14:05                             ` Arnd Bergmann
2021-12-17 14:27                             ` John Garry
2021-12-17 14:32                               ` Arnd Bergmann
2021-12-17 15:27                                 ` John Garry
2021-12-17 15:55                                   ` Arnd Bergmann
2021-12-17 16:30                                     ` John Garry
2021-12-20  9:27                                       ` Niklas Schnelle
2021-12-21 16:48                                         ` John Garry
2021-12-21 16:57                                           ` Niklas Schnelle
2021-12-19 14:23                               ` David Laight
2021-12-21 16:21                                 ` John Garry
2021-07-05 12:40     ` Niklas Schnelle

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