linux-kernel - Re: [PATCH V6 03/21] crypto: hisilicon/qm: Fix to enable build with RISC-V clang

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Message-ID: <ZGHJHcECXV0EptuT@gondor.apana.org.au>
Date:   Mon, 15 May 2023 13:54:37 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Sunil V L <sunilvl@...tanamicro.com>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-acpi@...r.kernel.org,
        linux-crypto@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        llvm@...ts.linux.dev, Jonathan Corbet <corbet@....net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Weili Qian <qianweili@...wei.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        "David S . Miller" <davem@...emloft.net>,
        Marc Zyngier <maz@...nel.org>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>
Subject: Re: [PATCH V6 03/21] crypto: hisilicon/qm: Fix to enable build with
 RISC-V clang

On Mon, May 15, 2023 at 11:19:10AM +0530, Sunil V L wrote:
> With CONFIG_ACPI enabled for RISC-V, this driver gets enabled in
> allmodconfig build. However, build fails with clang and below
> error is seen.
> 
> drivers/crypto/hisilicon/qm.c:627:10: error: invalid output constraint '+Q' in asm
>                        "+Q" (*((char __iomem *)fun_base))
>                        ^
> This is expected error with clang due to the way it is designed.
> 
> To fix this issue, move arm64 assembly code under #if.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/999
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>
> [sunilvl@...tanamicro.com: Moved tmp0 and tmp1 into the #if]
> Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
> ---
>  drivers/crypto/hisilicon/qm.c | 5 +++++
>  1 file changed, 5 insertions(+)

Acked-by: Herbert Xu <herbert@...dor.apana.org.au>
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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