linux-kernel - Re: [RFC PATCH 2/2] regmap: Reject fast_io regmap configurations with RBTREE and MAPLE caches

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: <c9614ffb-7840-6a84-883d-ed4371d75c11@roeck-us.net>
Date:   Fri, 21 Jul 2023 08:07:28 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Mark Brown <broonie@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        Heiko Stuebner <heiko@...ech.de>,
        Andy Yan <andy.yan@...k-chips.com>,
        Sascha Hauer <s.hauer@...gutronix.de>
Subject: Re: [RFC PATCH 2/2] regmap: Reject fast_io regmap configurations with
 RBTREE and MAPLE caches

On 7/21/23 08:03, Mark Brown wrote:
> On Fri, Jul 21, 2023 at 04:53:42PM +0200, Marek Szyprowski wrote:
> 
>> This patch, which landed in today's linux-next, breaks operation of the
>> RockChip's VOP2 DRM driver
>> (drivers/gpu/drm/rockchip/rockchip_drm_vop2.c). I'm not sure what is the
>> proper fix in this case. Should one change the cache type to REGCACHE_FLAT?
> 
> Actually Guenter and Dan have made the required updates to support this
> so the warning will be gone soon (hopefully Dan will send his patch
> properly shortly).

Do you plan to revert this patch ? If not regmap_init() would still fail
for the affected drivers, even after my and Dan's patches have been applied.

Thanks,
Guenter