linux-kernel - Re: [PATCH v5 08/16] riscv: add ISA parsing for Zca, Zcf, Zcd and Zcb

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Date: Tue, 21 May 2024 20:49:19 +0100
From: Conor Dooley <conor@...nel.org>
To: Clément Léger <cleger@...osinc.com>
Cc: Jonathan Corbet <corbet@....net>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Anup Patel <anup@...infault.org>, Shuah Khan <shuah@...nel.org>,
	Atish Patra <atishp@...shpatra.org>, linux-doc@...r.kernel.org,
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, kvm@...r.kernel.org,
	kvm-riscv@...ts.infradead.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v5 08/16] riscv: add ISA parsing for Zca, Zcf, Zcd and Zcb

On Fri, May 17, 2024 at 04:52:48PM +0200, Clément Léger wrote:

> +static int riscv_ext_zca_depends(const struct riscv_isa_ext_data *data,
> +				 const unsigned long *isa_bitmap)
> +{
> +	return __riscv_isa_extension_available(isa_bitmap, RISCV_ISA_EXT_ZCA) ? 0 : -EPROBE_DEFER;
> +}
> +static int riscv_ext_zcd_validate(const struct riscv_isa_ext_data *data,
> +				  const unsigned long *isa_bitmap)
> +{
> +	return __riscv_isa_extension_available(isa_bitmap, RISCV_ISA_EXT_ZCA) &&
> +	       __riscv_isa_extension_available(isa_bitmap, RISCV_ISA_EXT_d) ? 0 : -EPROBE_DEFER;
> +}

Could you write the logic in these out normally please? I think they'd
be more understandable (particular this second one) broken down and with
early return.

Otherwise,
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Cheers,
Conor.

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