Use the 'fallthrough' macro to document that this switch case
does indeed fall through to the next case.
../arch/arc/kernel/kgdb.c: In function 'kgdb_arch_handle_exception':
../arch/arc/kernel/kgdb.c:141:6: warning: this statement may fall through
[-Wimplicit-fallthrough=]
141 | if (kgdb_hex2
This paves way for setting up arc64 software ecosystem.
$ make check
cd testsuite && bash config-guess.sh && rm uname
PASS: config.guess checks (135 tests)
cd testsuite && bash config-sub.sh
PASS: config.sub checks (852 tests)
PASS: config.sub idempotency checks (789 tests)
PASS: config.sub canoni
On Wed, Apr 21, 2021 at 1:50 PM Niklas Schnelle wrote:
> On Wed, 2021-04-21 at 11:24 +, David Laight wrote:
> >
> > I suspect that this might be better not inlined
> > when PCI_IOBASE is undefined.
> >
> > Otherwise you get quite a lot of bloat from all the
> > WARN_ONCE() calls.
>
> Hmm, I wa
On Wed, 2021-04-21 at 11:24 +, David Laight wrote:
> From: Niklas Schnelle
> > Sent: 21 April 2021 12:18
> >
> > When PCI_IOBASE is not defined, it is set to 0 such that it is ignored
> > in calls to the readX/writeX primitives. This triggers clang's
> > -Wnull-pointer-arithmetic warning and w
From: Niklas Schnelle
> Sent: 21 April 2021 12:18
>
> When PCI_IOBASE is not defined, it is set to 0 such that it is ignored
> in calls to the readX/writeX primitives. This triggers clang's
> -Wnull-pointer-arithmetic warning and will result in illegal accesses on
> platforms that do not support I
Hi,
This is version 3 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-gen
Instead of relying on the fallback in asm-generic/io.h which sets
PCI_IOBASE 0 if it is not defined set it explicitly.
Link:
https://lore.kernel.org/lkml/CAK8P3a3PK9zyeP4ymELtc2ZYnymECoACiigw9Za+pvSJpCk5=g...@mail.gmail.com/
Signed-off-by: Niklas Schnelle
---
v1 -> v2:
- Improved comment (David
When PCI_IOBASE is not defined, it is set to 0 such that it is ignored
in calls to the readX/writeX primitives. This triggers clang's
-Wnull-pointer-arithmetic warning and will result in illegal accesses on
platforms that do not support I/O ports if drivers do still attempt to
access them.
Make th
From: Niklas Schnelle
In a future change asm-generic/io.h will make inb() and friends
WARN_ONCE() on systems without I/O port support. This requires
WARN_ONCE() from asm/bug.h to be included so include it in the
arch specific io.h as done by other architectures.
Signed-off-by: Niklas Schnelle
-
On Wed, Apr 21, 2021 at 10:43 AM David Laight wrote:
> From: Arnd Bergmann Sent: 20 April 2021 22:20
> > On Tue, Apr 20, 2021 at 11:14 PM Vineet Gupta
> > wrote:
> > > On 4/20/21 12:07 AM, Arnd Bergmann wrote:
> >
> > > >
> > > > which means that half the 32-bit architectures do this. This may
>
From: Arnd Bergmann
> Sent: 20 April 2021 22:20
>
> On Tue, Apr 20, 2021 at 11:14 PM Vineet Gupta
> wrote:
> > On 4/20/21 12:07 AM, Arnd Bergmann wrote:
>
> > >
> > > which means that half the 32-bit architectures do this. This may
> > > cause more problems when arc and/or microblaze want to sup
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