linux-kernel - Applied "regulator: pv88090: Exception handling for out of bounds" to the regulator tree

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Message-Id: <E1dn4pY-0003Z6-Dd@debutante>
Date:   Wed, 30 Aug 2017 16:23:00 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Eric Jeong <eric.jeong.opensource@...semi.com>
Cc:     Mark Brown <broonie@...nel.org>,
        LINUXKERNEL <linux-kernel@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Support Opensource <support.opensource@...semi.com>,
        linux-kernel@...r.kernel.org
Subject: Applied "regulator: pv88090: Exception handling for out of bounds" to the regulator tree

The patch

   regulator: pv88090: Exception handling for out of bounds

has been applied to the regulator tree at

   git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 8986a11978373400a7e880b413c43ca229d7a8a8 Mon Sep 17 00:00:00 2001
From: Eric Jeong <eric.jeong.opensource@...semi.com>
Date: Wed, 30 Aug 2017 17:54:27 +0900
Subject: [PATCH] regulator: pv88090: Exception handling for out of bounds

This is a patch for exception handlding that the index of array is
out of bounds. And the definitions have been updated to use
proper device name.

Signed-off-by: Eric Jeong <eric.jeong.opensource@...semi.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/regulator/pv88090-regulator.c | 11 ++++++++---
 drivers/regulator/pv88090-regulator.h |  8 ++++----
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/regulator/pv88090-regulator.c b/drivers/regulator/pv88090-regulator.c
index ab51e254d13a..7a0c15957bd0 100644
--- a/drivers/regulator/pv88090-regulator.c
+++ b/drivers/regulator/pv88090-regulator.c
@@ -43,7 +43,7 @@ enum {
 struct pv88090_regulator {
 	struct regulator_desc desc;
 	/* Current limiting */
-	unsigned	n_current_limits;
+	unsigned int n_current_limits;
 	const int	*current_limits;
 	unsigned int limit_mask;
 	unsigned int conf;
@@ -398,9 +398,14 @@ static int pv88090_i2c_probe(struct i2c_client *i2c,
 				return ret;
 
 			range = (range >>
-				 (PV88080_BUCK_VRANGE_GAIN_SHIFT + i - 1)) &
-				PV88080_BUCK_VRANGE_GAIN_MASK;
+				 (PV88090_BUCK_VRANGE_GAIN_SHIFT + i - 1)) &
+				PV88090_BUCK_VRANGE_GAIN_MASK;
 			index = ((range << 1) | conf2);
+			if (index > PV88090_ID_BUCK3) {
+				dev_err(chip->dev,
+					"Invalid index(%d)\n", index);
+				return -EINVAL;
+			}
 
 			pv88090_regulator_info[i].desc.min_uV
 				= pv88090_buck_vol[index].min_uV;
diff --git a/drivers/regulator/pv88090-regulator.h b/drivers/regulator/pv88090-regulator.h
index d7aca8d8266d..62d9029277f4 100644
--- a/drivers/regulator/pv88090-regulator.h
+++ b/drivers/regulator/pv88090-regulator.h
@@ -89,10 +89,10 @@
 #define PV88090_BUCK_VDAC_RANGE_2			0x01
 
 /* PV88090_REG_BUCK_FOLD_RANGE (addr=0x61) */
-#define PV88080_BUCK_VRANGE_GAIN_SHIFT			3
-#define PV88080_BUCK_VRANGE_GAIN_MASK			0x01
+#define PV88090_BUCK_VRANGE_GAIN_SHIFT			3
+#define PV88090_BUCK_VRANGE_GAIN_MASK			0x01
 
-#define PV88080_BUCK_VRANGE_GAIN_1			0x00
-#define PV88080_BUCK_VRANGE_GAIN_2			0x01
+#define PV88090_BUCK_VRANGE_GAIN_1			0x00
+#define PV88090_BUCK_VRANGE_GAIN_2			0x01
 
 #endif	/* __PV88090_REGISTERS_H__ */
-- 
2.14.1