From: David Laight <David.Laight@ACULAB.COM>
To: 'Arnd Bergmann' <arnd@arndb.de>,
Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
clang-built-linux <clang-built-linux@googlegroups.com>,
linux-arch <linux-arch@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-s390 <linux-s390@vger.kernel.org>
Subject: RE: [PATCH] asm-generic/io.h: Silence -Wnull-pointer-arithmetic warning on PCI_IOBASE
Date: Tue, 13 Apr 2021 13:06:49 +0000 [thread overview]
Message-ID: <11ead5c2c73c42cbbeef32966bc7e5c2@AcuMS.aculab.com> (raw)
In-Reply-To: <CAK8P3a2NR2nhEffFQJdMq2Do_g2ji-7p3+iWyzw+aXD6gov05w@mail.gmail.com>
From: Arnd Bergmann
> Sent: 13 April 2021 13:58
...
> The remaining ones (csky, m68k, sparc32) need to be inspected
> manually to see if they currently support PCI I/O space but in
> fact use address zero as the base (with large resources) or they
> should also turn the operations into a NOP.
I'd expect sparc32 to use an ASI to access PCI IO space.
I can't quite remember whether IO space was supported at all.
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2021-04-13 13:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 11:54 [PATCH] asm-generic/io.h: Silence -Wnull-pointer-arithmetic warning on PCI_IOBASE Niklas Schnelle
2021-04-13 12:26 ` Arnd Bergmann
2021-04-13 12:38 ` Niklas Schnelle
2021-04-13 12:57 ` Arnd Bergmann
2021-04-13 13:06 ` David Laight [this message]
2021-04-13 13:40 ` Arnd Bergmann
2021-04-13 14:07 ` Guo Ren
2021-04-13 14:12 ` David Laight
2021-04-14 12:34 ` Niklas Schnelle
2021-04-14 13:50 ` David Laight
2021-04-14 14:02 ` Niklas Schnelle
2021-04-13 12:56 ` David Laight
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