From: Paul Walmsley <pjw@kernel.org>
To: Yunhui Cui <cuiyunhui@bytedance.com>
Cc: pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu,
alex@ghiti.fr, dennis@kernel.org, tj@kernel.org, cl@gentwo.org,
ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
martin.lau@linux.dev, eddyz87@gmail.com, memxor@gmail.com,
song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org,
bjorn@kernel.org, pulehui@huawei.com, puranjay@kernel.org,
thuth@redhat.com, ajones@ventanamicro.com,
ben.dooks@codethink.co.uk, rkrcmar@ventanamicro.com,
samuel.holland@sifive.com, zong.li@sifive.com,
conor.dooley@microchip.com, tglx@kernel.org, debug@rivosinc.com,
seanwascoding@gmail.com, andybnac@gmail.com,
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wangruikang@iscas.ac.cn, atishp@rivosinc.com,
apatel@ventanamicro.com, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
bpf@vger.kernel.org, arnd@arndb.de, nathan@kernel.org,
nick.desaulniers+lkml@gmail.com, morbo@google.com,
justinstitt@google.com, qingfang.deng@siflower.com.cn,
linux-arch@vger.kernel.org, llvm@lists.linux.dev
Subject: Re: [PATCH v8 1/3] riscv: io: avoid null-pointer arithmetic in PIO helpers
Date: Mon, 13 Jul 2026 12:03:47 -0600 (MDT) [thread overview]
Message-ID: <74ffb0c5-4edd-7b64-3d3f-be76c2aec4c2@kernel.org> (raw)
In-Reply-To: <20260703122832.15984-2-cuiyunhui@bytedance.com>
On Fri, 3 Jul 2026, Yunhui Cui wrote:
> When port I/O is not supported, exposing the port-string helpers is both
> unnecessary and can make clang diagnose null-pointer arithmetic from the
> PCI_IOBASE based address expression. Keep the MMIO string helpers
> available as before, but only provide the port I/O variants when
> CONFIG_HAS_IOPORT is enabled.
>
> Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Thanks, queued for v7.2-rc.
- Paul
next prev parent reply other threads:[~2026-07-13 18:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-03 12:28 [PATCH v8 0/3] riscv: fix PIO helpers and add optimized percpu ops Yunhui Cui
2026-07-03 12:28 ` [PATCH v8 1/3] riscv: io: avoid null-pointer arithmetic in PIO helpers Yunhui Cui
2026-07-13 18:03 ` Paul Walmsley [this message]
2026-07-14 6:23 ` [External] " yunhui cui
2026-07-03 12:28 ` [PATCH v8 2/3] riscv: introduce percpu.h into include/asm Yunhui Cui
2026-07-03 12:28 ` [PATCH v8 3/3] riscv: store percpu offset into thread_info Yunhui Cui
2026-07-03 21:02 ` Thomas Gleixner
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