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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);
> 

  reply	other threads:[~2018-11-20  0:58 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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