linux-kernel - Re: [PATCH v3 2/4] venus: core: vote for video-mem path

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: <160093404143.310579.16661024956168032008@swboyd.mtv.corp.google.com>
Date:   Thu, 24 Sep 2020 00:54:01 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Mansur Alisha Shaik <mansur@...eaurora.org>,
        linux-media@...r.kernel.org, stanimir.varbanov@...aro.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        vgarodia@...eaurora.org,
        Mansur Alisha Shaik <mansur@...eaurora.org>
Subject: Re: [PATCH v3 2/4] venus: core: vote for video-mem path

Quoting Mansur Alisha Shaik (2020-09-23 23:51:04)
> Currently video driver is voting for venus0-ebi path during buffer
> processing with an average bandwidth of all the instances and
> unvoting during session release.
> 
> While video streaming when we try to do XO-SD using the command
> "echo mem > /sys/power/state command" , device is not entering
> to suspend state and from interconnect summary seeing votes for venus0-ebi
> 
> Corrected this by voting for venus0-ebi path in venus_runtime_resume()
> and unvote during venus_runtime_suspend().
> 
> Fixes: 7482a983d ("media: venus: redesign clocks and pm domains control")
> Signed-off-by: Mansur Alisha Shaik <mansur@...eaurora.org>
> ---
> Changes in v3:
> - Addressed review comments by Stephen Boyd

Please Cc me on patches I review.

> 
>  drivers/media/platform/qcom/venus/core.c | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
> index 52a3886..fa363b8 100644
> --- a/drivers/media/platform/qcom/venus/core.c
> +++ b/drivers/media/platform/qcom/venus/core.c
> @@ -363,7 +363,18 @@ static __maybe_unused int venus_runtime_suspend(struct device *dev)
>  
>         ret = icc_set_bw(core->cpucfg_path, 0, 0);
>         if (ret)
> -               return ret;
> +               goto err_cpucfg_path;
> +
> +       ret = icc_set_bw(core->video_path, 0, 0);
> +       if (ret)
> +               goto err_video_path;
> +
> +       return ret;
> +
> +err_video_path:
> +       icc_set_bw(core->cpucfg_path, kbps_to_icc(1000), 0);
> +err_cpucfg_path:
> +       pm_ops->core_power(dev, POWER_ON);
>  
>         return ret;
>  }
> @@ -374,6 +385,10 @@ static __maybe_unused int venus_runtime_resume(struct device *dev)
>         const struct venus_pm_ops *pm_ops = core->pm_ops;
>         int ret;
>  
> +       ret = icc_set_bw(core->video_path, 0, kbps_to_icc(1000));
> +       if (ret)
> +               return ret;
> +

Feels like this patch should come after the next one but OK.

Reviewed-by: Stephen Boyd <swboyd@...omium.org>