linux-kernel - Re: [PATCH v2 2/3] clk: ti: check clock type before doing autoidle ops

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]

Date:   Thu, 29 Nov 2018 16:25:05 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Andreas Kemnade <andreas@...nade.info>, bcousson@...libre.com,
        letux-kernel@...nphoenux.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        mturquette@...libre.com, paul@...an.com, t-kristo@...com,
        tony@...mide.com
Cc:     Andreas Kemnade <andreas@...nade.info>
Subject: Re: [PATCH v2 2/3] clk: ti: check clock type before doing autoidle ops

Quoting Andreas Kemnade (2018-11-10 12:31:14)
> Code might use autoidle api with clocks not being omap2 clocks,
> so check if clock type is not basic
> 
> Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> ---
> New in v2
> ---
>  drivers/clk/ti/autoidle.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/ti/autoidle.c b/drivers/clk/ti/autoidle.c
> index 161f67850393..5bdae5552d38 100644
> --- a/drivers/clk/ti/autoidle.c
> +++ b/drivers/clk/ti/autoidle.c
> @@ -54,8 +54,12 @@ static DEFINE_SPINLOCK(autoidle_spinlock);
>  int omap2_clk_deny_idle(struct clk *clk)
>  {
>         struct clk_hw_omap *c;
> +       struct clk_hw *hw = __clk_get_hw(clk);
>  
> -       c = to_clk_hw_omap(__clk_get_hw(clk));
> +       if (clk_hw_get_flags(hw) & CLK_IS_BASIC)

Please try to avoid using CLK_IS_BASIC if at all possible. Can you?
Maybe add some flag in clk_hw_omap() instead?