linux-kernel - Re: [PATCH v2 0/4] clk_phase error caching problems

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Message-ID: <1jtv44aznz.fsf@starbuckisacylon.baylibre.com>
Date:   Thu, 06 Feb 2020 09:27:28 +0100
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Heiko Stuebner <heiko@...ech.de>
Subject: Re: [PATCH v2 0/4] clk_phase error caching problems


On Thu 06 Feb 2020 at 00:27, Stephen Boyd <sboyd@...nel.org> wrote:

> This patch series is a follow up to[1] which I sent out a few months
> ago. We no longer cache the clk phase if it's an error value, so that
> things like debugfs don't return us nonsense values for the phase.
>
> Futhermore, the last patch fixes up the locking so that debugfs code
> can avoid doing a recursive prepare lock because we know what we're
> doing in that case. While we get some more functions, we avoid taking
> the lock again.
>
> Changes from v1:
>  * A pile of new patches
>  * Rebased to clk-next
>  * New patch to bail out of registration if getting the phase fails

Series look good - comment on patch 1 is just a nitpick

Acked-by: Jerome Brunet <jbrunet@...libre.com>

>
> Cc: Douglas Anderson <dianders@...omium.org>
> Cc: Heiko Stuebner <heiko@...ech.de>
> Cc: Jerome Brunet <jbrunet@...libre.com>
>
> Stephen Boyd (4):
>   clk: Don't cache errors from clk_ops::get_phase()
>   clk: Use 'parent' to shorten lines in __clk_core_init()
>   clk: Move rate and accuracy recalc to mostly consumer APIs
>   clk: Bail out when calculating phase fails during clk registration
>
>  drivers/clk/clk.c | 119 +++++++++++++++++++++++++++-------------------
>  1 file changed, 70 insertions(+), 49 deletions(-)
>
> [1] https://lkml.kernel.org/r/20191001174439.182435-1-sboyd@kernel.org
>
> base-commit: 5df867145f8adad9e5cdf9d67db1fbc0f71351e9