linux-kernel - Re: [PATCH 2/4] riscv: drop some idefs from CMO initialization

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Date:   Fri, 2 Sep 2022 11:49:54 +0200
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, conor.dooley@...rochip.com,
        guoren@...nel.org, apatel@...tanamicro.com, atishp@...osinc.com,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] riscv: drop some idefs from CMO initialization

On Fri, Sep 02, 2022 at 12:27:42AM +0200, Heiko Stuebner wrote:
> Wrapping things in #ifdefs makes the code harder to read
> while we also have IS_ENABLED() macros to do this in regular code
> and the extension detection is not _that_ runtime critical.
> 
> So define a stub for riscv_noncoherent_supported() in the
> non-CONFIG_RISCV_DMA_NONCOHERENT case and move the code to
> us IS_ENABLED.
> 
> Suggested-by: Conor Dooley <conor.dooley@...rochip.com>
> Signed-off-by: Heiko Stuebner <heiko@...ech.de>
> ---
>  arch/riscv/errata/thead/errata.c    |  7 +++----
>  arch/riscv/include/asm/cacheflush.h |  2 ++
>  arch/riscv/kernel/cpufeature.c      | 22 +++++++++-------------
>  3 files changed, 14 insertions(+), 17 deletions(-)
>


Reviewed-by: Andrew Jones <ajones@...tanamicro.com>