linux-kernel - [PATCH 005/105] regulator: fixed regulator_bulk

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Date:	Fri, 28 Jun 2013 11:50:27 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Andrzej Hajda <a.hajda@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 005/105] regulator: fixed regulator_bulk_enable unwinding code

3.8.13.4 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrzej Hajda <a.hajda@...sung.com>

commit fbe31057fafebdc2811a7101b8b4a0460f5417d1 upstream.

Unwinding code disables all successfully enabled regulators.
Error is logged for every failed regulator.

Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/regulator/core.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 5a0f54a..e56185b 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3032,9 +3032,13 @@ int regulator_bulk_enable(int num_consumers,
 	return 0;
 
 err:
-	pr_err("Failed to enable %s: %d\n", consumers[i].supply, ret);
-	while (--i >= 0)
-		regulator_disable(consumers[i].consumer);
+	for (i = 0; i < num_consumers; i++) {
+		if (consumers[i].ret < 0)
+			pr_err("Failed to enable %s: %d\n", consumers[i].supply,
+			       consumers[i].ret);
+		else
+			regulator_disable(consumers[i].consumer);
+	}
 
 	return ret;
 }
-- 
1.8.1.2

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