linux-kernel - [PATCH 01/13] regulator: Fix DT node name checking in max8997-pmic

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Date:	Thu, 12 Apr 2012 20:45:20 +0200
From:	Karol Lewandowski <k.lewandowsk@...sung.com>
To:	linux-samsung-soc@...r.kernel.org
Cc:	devicetree-discuss@...ts.ozlabs.org, thomas.abraham@...aro.org,
	m.szyprowski@...sung.com, kyungmin.park@...sung.com,
	linux-kernel@...r.kernel.org, olof@...om.net,
	kgene.kim@...sung.com, Karol Lewandowski <k.lewandowsk@...sung.com>
Subject: [PATCH 01/13] regulator: Fix DT node name checking in max8997-pmic

Avoid hard lockup when someone provides non-supported regulator
name.

Signed-off-by: Karol Lewandowski <k.lewandowsk@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
Cc: Thomas Abraham <thomas.abraham@...aro.org>
---
 drivers/regulator/max8997.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index dce8aaf..c20fd72 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -1011,6 +1011,13 @@ static int max8997_pmic_dt_parse_pdata(struct max8997_dev *iodev,
 		for (i = 0; i < ARRAY_SIZE(regulators); i++)
 			if (!of_node_cmp(reg_np->name, regulators[i].name))
 				break;
+
+		if (i == ARRAY_SIZE(regulators)) {
+			dev_warn(iodev->dev, "don't know how to configure regulator %s\n",
+				 reg_np->name);
+			continue;
+		}
+
 		rdata->id = i;
 		rdata->initdata = of_get_regulator_init_data(
 						iodev->dev, reg_np);
-- 
1.7.9.1

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