linux-kernel - Re: [PATCH 1/1] spi: intel: Remove DANGEROUS tag from pci driver

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Message-Id: <20230207135254.2465816-1-michael@walle.cc>
Date:   Tue,  7 Feb 2023 14:52:54 +0100
From:   Michael Walle <michael@...le.cc>
To:     mauro.lima@...ypsium.com
Cc:     broonie@...nel.org, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org, mika.westerberg@...ux.intel.com,
        Michael Walle <michael@...le.cc>
Subject: Re: [PATCH 1/1] spi: intel: Remove DANGEROUS tag from pci driver

> Modern CPUs exposes this controller as PCI device that only uses
> hardware sequencing capabilities which is safer than software
> sequencing.
> Leave the platform driver as *DANGEROUS* and update help text since
> most of these controllers are using software sequencing.

Out of curiosity, what is hardware sequencing? Maybe this should
be explained a bit more in the Kconfig help text. Looks like the
dangerous was there because you can update the bios and that
could eventually lead to a bricked mainboard. So hardware
sequencing helps there? how?

-michael