From: Dmitry Osipenko <digetx@gmail.com>
To: Douglas Anderson <dianders@chromium.org>,
Mark Brown <broonie@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
evgreen@chromium.org, swboyd@chromium.org,
ryandcase@chromium.org, David Collins <collinsd@codeaurora.org>,
linux-arm-msm@vger.kernel.org,
Liam Girdwood <lgirdwood@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 7/7] regulator: core: Remove loop disabling supplies in regulator_force_disable()
Date: Tue, 20 Nov 2018 03:58:55 +0300 [thread overview]
Message-ID: <3c226e1e-f707-c005-8c46-c0445f60a9a8@gmail.com> (raw)
In-Reply-To: <20181120002654.1891-7-dianders@chromium.org>
On 20.11.2018 3:26, Douglas Anderson wrote:
> In regulator_force_disable() there was a strange loop that looked like:
>
> while (rdev->open_count--)
> regulator_disable(rdev->supply);
>
> I'm not totally sure what the goal was for this loop, but it seems
> wrong to me. If anything I think maybe we should have been looping
> over our use_count, but even that might be a little strange. For now
> let's just remove the code and we can add something back in if someone
> can explain what's expected.
>
> Fixes: f8702f9e4aa7 ("regulator: core: Use ww_mutex for regulators locking")
Seems this "fixes" tag is incorrect, isn't it? The "ww_mutex" patch didn't touch this code.
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> ---
>
> drivers/regulator/core.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
> index 2eda87520832..963081aba17a 100644
> --- a/drivers/regulator/core.c
> +++ b/drivers/regulator/core.c
> @@ -2738,10 +2738,6 @@ int regulator_force_disable(struct regulator *regulator)
>
> regulator_unlock_dependent(rdev, &ww_ctx);
>
> - if (rdev->supply)
> - while (rdev->open_count--)
> - regulator_disable(rdev->supply);
> -
> return ret;
> }
> EXPORT_SYMBOL_GPL(regulator_force_disable);
>
next prev parent reply other threads:[~2018-11-20 0:59 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-20 0:26 [PATCH 1/7] regulator: core: Properly expose requested_microamps in sysfs Douglas Anderson
2018-11-20 0:26 ` [PATCH 2/7] regulator: core: Don't assume always_on when is_enabled returns err Douglas Anderson
2018-11-20 16:00 ` Mark Brown
2018-11-20 18:17 ` Doug Anderson
2018-11-20 0:26 ` [PATCH 3/7] regulator: core: Don't double-disable supplies in regulator_disable_deferred() Douglas Anderson
2018-11-20 0:45 ` Dmitry Osipenko
2018-11-20 0:26 ` [PATCH 4/7] regulator: core: Only count load for enabled consumers Douglas Anderson
2018-11-20 0:26 ` [PATCH 5/7] regulator: core: add enable_count for consumers to debug fs Douglas Anderson
2018-11-20 16:10 ` Mark Brown
2018-11-20 16:52 ` Doug Anderson
2018-11-20 16:58 ` Mark Brown
2018-11-20 17:05 ` Doug Anderson
2018-11-20 17:57 ` Doug Anderson
2018-11-20 0:26 ` [PATCH 6/7] regulator: core: Avoid propagating to supplies when possible Douglas Anderson
2018-11-20 0:26 ` [PATCH 7/7] regulator: core: Remove loop disabling supplies in regulator_force_disable() Douglas Anderson
2018-11-20 0:58 ` Dmitry Osipenko [this message]
2018-11-20 2:05 ` Doug Anderson
2018-11-20 15:54 ` Mark Brown
2018-11-20 16:04 ` Doug Anderson
2018-11-20 16:25 ` Mark Brown
2018-11-20 16:57 ` Doug Anderson
2018-11-20 16:59 ` Mark Brown
2018-11-20 17:00 ` Mark Brown
2018-11-20 17:55 ` Doug Anderson
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