linux-hardening - Re: [PATCH v5 4/4] i3c: master: Add basic driver for the Renesas I3C controller

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Message-ID: <aIoyEKpB7twvKDGN@shikoro>
Date: Wed, 30 Jul 2025 16:54:08 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: linux-renesas-soc@...r.kernel.org,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Frank Li <Frank.Li@....com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Kees Cook <kees@...nel.org>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Magnus Damm <magnus.damm@...il.com>, linux-i3c@...ts.infradead.org,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH v5 4/4] i3c: master: Add basic driver for the Renesas I3C
 controller


> Why not use readl() and writel() directly?
> To make it easier to add debug prints during initial development?

Yes. And ultimately, there is a patch in the works converting the driver
to MMIO regmap to get rid of _all_ the helpers. I couldn't make this in
time for the 6.17 mergewindow, though, because of... gory details.