linux-kernel - Re: [PATCH RESEND 0/3] Allow on demand channel request / free

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: <20201116083415.GK5849@dragon>
Date:   Mon, 16 Nov 2020 16:34:17 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Daniel Baluta <daniel.baluta@....com>
Cc:     s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, paul.olaru@....com,
        shengjiu.wang@....com
Subject: Re: [PATCH RESEND 0/3] Allow on demand channel request / free

On Wed, Nov 11, 2020 at 01:11:15PM +0200, Daniel Baluta wrote:
> Requesting an mailbox channel will call mailbox's startup
> function.
> 
> startup function calls pm_runtime_get_sync which increments device usage
> count and will keep the device active. Specifically, mailbox clock will
> be always ON when a mailbox channel is requested.
> 
> For this, reason we introduce a way to request/free IMX DSP channels
> on demand to save power when the channels are not used.
> 
> First two patches are doing code refactoring preparing the path
> for 3rd patch which exports functions for on demand channel request/free
> 
> 
> Daniel Baluta (3):
>   firmware: imx: Introduce imx_dsp_setup_channels
>   firmware: imx: Save channel name for further use
>   firmware: imx-dsp: Export functions to request/free channels

Applied all, thanks.