linux-kernel - Re: [PATCH 0/2] Fix kernel splats on boot with armada-37xx irqchip driver

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Date:   Mon, 18 Jul 2022 14:06:58 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Linus Walleij <linus.walleij@...aro.org>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Marek Behún <kabel@...nel.org>,
        Pali Rohár <pali@...nel.org>
Subject: Re: [PATCH 0/2] Fix kernel splats on boot with armada-37xx irqchip
 driver

Hi Linus,

On Mon, Jul 18, 2022 at 03:43:19PM +0200, Linus Walleij wrote:
> Patches applied for fixes so they get some rotation in linux-next.
> 
> Reviewers have some days to react before I send this to Torvalds.

Thanks for doing that.

> Should these even be tagged for stable?

They could.

This specific lockdep check was introduced in commit de8f5e4f2dc1
("lockdep: Introduce wait-type checks") which appeared in v5.7.

The fixes depend upon commit 67021f25d952 ("regmap: teach regmap to
use raw spinlocks if requested in the config") which appeared in v5.15.

So at least the stable 5.15 and 5.18 kernels can benefit if lockdep is
being used - that's without any extra burden of backporting the regmap
dependency commit itself any further.