linux-kernel - Re: [PATCH v3] media: iris: vpu3x: Add MNoC low power handshake during hardware power-off

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]

Message-ID: <9863f7e7-ef3e-4f57-bbbe-9ac4aa88a426@linaro.org>
Date: Thu, 21 Aug 2025 15:00:41 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Abhinav Kumar <abhinav.kumar@...ux.dev>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v3] media: iris: vpu3x: Add MNoC low power handshake
 during hardware power-off

On 21/08/2025 11:54, Dikshita Agarwal wrote:
> Add the missing write to AON_WRAPPER_MVP_NOC_LPI_CONTROL before
> reading the LPI status register. Introduce a handshake loop to ensure
> MNoC enters low power mode reliably during VPU3 hardware power-off with
> timeout handling.

So right now upstream we have an incorrect power-off sequence.

In which case this is a bug fix and needs a Fixes: tag.

---
bod