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From: Douglas Anderson <dianders@chromium.org>
To: Mark Brown <broonie@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	evgreen@chromium.org, swboyd@chromium.org,
	Dmitry Osipenko <digetx@gmail.com>,
	ryandcase@chromium.org, David Collins <collinsd@codeaurora.org>,
	linux-arm-msm@vger.kernel.org,
	Douglas Anderson <dianders@chromium.org>,
	Liam Girdwood <lgirdwood@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 7/7] regulator: core: Remove loop disabling supplies in regulator_force_disable()
Date: Mon, 19 Nov 2018 16:26:54 -0800	[thread overview]
Message-ID: <20181120002654.1891-7-dianders@chromium.org> (raw)
In-Reply-To: <20181120002654.1891-1-dianders@chromium.org>

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")
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);
-- 
2.19.1.1215.g8438c0b245-goog


  parent reply	other threads:[~2018-11-20  0:27 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 ` Douglas Anderson [this message]
2018-11-20  0:58   ` [PATCH 7/7] regulator: core: Remove loop disabling supplies in regulator_force_disable() Dmitry Osipenko
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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