linux-kernel - Re: [PATCH v6 06/23] mailbox: Add RISC-V SBI message proxy (MPXY) based mailbox driver

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Message-ID: <aFkVQTSCSkvBhzgC@smile.fi.intel.com>
Date: Mon, 23 Jun 2025 11:50:09 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Anup Patel <apatel@...tanamicro.com>
Cc: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jassi Brar <jassisinghbrar@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Len Brown <lenb@...nel.org>, Sunil V L <sunilvl@...tanamicro.com>,
	Rahul Pathak <rpathak@...tanamicro.com>,
	Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
	Atish Patra <atish.patra@...ux.dev>,
	Andrew Jones <ajones@...tanamicro.com>,
	Samuel Holland <samuel.holland@...ive.com>,
	Anup Patel <anup@...infault.org>, linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 06/23] mailbox: Add RISC-V SBI message proxy (MPXY)
 based mailbox driver

On Wed, Jun 18, 2025 at 05:43:41PM +0530, Anup Patel wrote:
> Add a mailbox controller driver for the new SBI message proxy extension
> which is part of the SBI v3.0 specification.

...

> +static void mpxy_mbox_remove(struct platform_device *pdev)
> +{
> +	struct mpxy_mbox *mbox = platform_get_drvdata(pdev);

> +	if (mbox->msi_count)

I'm still not convinced we need this check _here_.
Can it be rather a separate patch to add it inside
the below call?

> +		platform_device_msi_free_irqs_all(mbox->dev);
> +}

...

> +static const struct of_device_id mpxy_mbox_of_match[] = {
> +	{.compatible = "riscv,sbi-mpxy-mbox", },

Missing space and unneeded inner comma.

> +	{}
> +};

...

> --- a/include/linux/byteorder/generic.h
> +++ b/include/linux/byteorder/generic.h

This is good change, but deserves to be in a separate patch.
I will Ack/Review it as soon as it appears to be so.

-- 
With Best Regards,
Andy Shevchenko