netdev - Re: [PATCH v9 04/27] cxl/pci: add check for validating capabilities

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Message-ID: <20250102143813.00002312@huawei.com>
Date: Thu, 2 Jan 2025 14:38:13 +0000
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: <alejandro.lucero-palau@....com>
CC: <linux-cxl@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dan.j.williams@...el.com>, <edward.cree@....com>, <davem@...emloft.net>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <edumazet@...gle.com>,
	<dave.jiang@...el.com>, Alejandro Lucero <alucerop@....com>
Subject: Re: [PATCH v9 04/27] cxl/pci: add check for validating capabilities

On Mon, 30 Dec 2024 21:44:22 +0000
alejandro.lucero-palau@....com wrote:

> From: Alejandro Lucero <alucerop@....com>
> 
> During CXL device initialization supported capabilities by the device
> are discovered. Type3 and Type2 devices have different mandatory
> capabilities and a Type2 expects a specific set including optional
> capabilities.
> 
> Add a function for checking expected capabilities against those found
> during initialization and allow those mandatory/expected capabilities to
> be a subset of the capabilities found.
> 
> Rely on this function for validating capabilities instead of when CXL
> regs are probed.
> 
> Signed-off-by: Alejandro Lucero <alucerop@....com>
> Reviewed-by: Zhi Wang <zhiw@...dia.com>

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>