linux-kernel - Re: [PATCH] pwm: stm32-lp: fix the check on arr and cmp registers update

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] [day] [month] [year] [list]

Date:   Mon, 30 Jan 2023 16:45:04 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Fabrice Gasnier <fabrice.gasnier@...s.st.com>,
        u.kleine-koenig@...gutronix.de
Cc:     linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        olivier.moysan@...s.st.com, linux-pwm@...r.kernel.org,
        alexandre.torgue@...s.st.com
Subject: Re: [PATCH] pwm: stm32-lp: fix the check on arr and cmp registers update

On Wed, 23 Nov 2022 14:36:52 +0100, Fabrice Gasnier wrote:
> The ARR (auto reload register) and CMP (compare) registers are
> successively written. The status bits to check the update of these
> registers are polled together with regmap_read_poll_timeout().
> The condition to end the loop may become true, even if one of the
> register isn't correctly updated.
> So ensure both status bits are set before clearing them.
> 
> [...]

Applied, thanks!

[1/1] pwm: stm32-lp: fix the check on arr and cmp registers update
      commit: 3066bc2d58be31275afb51a589668f265e419c37

Best regards,
-- 
Thierry Reding <thierry.reding@...il.com>