linux-kernel - Re: [PATCH] regmap: maple: Don't sync read-only registers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <e04053b2-897c-46fa-bd1f-e455e01c6152@sirena.org.uk>
Date:   Tue, 13 Jun 2023 11:59:27 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH] regmap: maple: Don't sync read-only registers

On Tue, Jun 13, 2023 at 12:34:45PM +0200, Takashi Iwai wrote:
> Mark Brown wrote:
> > On Tue, Jun 13, 2023 at 09:45:11AM +0200, Takashi Iwai wrote:

> > This should be in _needs_sync().

> I thought it's a different logic?  regacahe_reg_needs_sync() checks
> only whether it's a default value, and other call paths already check
> regmap_writeable().

Yeah, but it feels like that's the reason we ran into this issue given
that you'd expect _needs_sync() to check this too.

> But I can put the check there instead if you still prefer, too.

It should avoid any similar issues in future.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)