linux-kernel - [PATCH] staging/iio: error case memory leak fix

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Date:	Thu,  2 Jun 2011 00:21:45 +0200
From:	Andre Bartke <andre.bartke@...glemail.com>
To:	gregkh@...e.de
Cc:	jic23@....ac.uk, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, Andre Bartke <andre.bartke@...il.com>
Subject: [PATCH] staging/iio: error case memory leak fix

The data pointer should be freed in the error
cases of adis16400_trigger_handler().

Signed-off-by: Andre Bartke <andre.bartke@...il.com>
---
 drivers/staging/iio/imu/adis16400_ring.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
index 2589a7e..3612373 100644
--- a/drivers/staging/iio/imu/adis16400_ring.c
+++ b/drivers/staging/iio/imu/adis16400_ring.c
@@ -137,13 +137,13 @@ static irqreturn_t adis16400_trigger_handler(int irq, void *p)
 		if (st->variant->flags & ADIS16400_NO_BURST) {
 			ret = adis16350_spi_read_all(&indio_dev->dev, st->rx);
 			if (ret < 0)
-				return ret;
+				goto err;
 			for (; i < ring->scan_count; i++)
 				data[i]	= *(s16 *)(st->rx + i*2);
 		} else {
 			ret = adis16400_spi_read_burst(&indio_dev->dev, st->rx);
 			if (ret < 0)
-				return ret;
+				goto err;
 			for (; i < indio_dev->ring->scan_count; i++) {
 				j = __ffs(mask);
 				mask &= ~(1 << j);
@@ -158,9 +158,13 @@ static irqreturn_t adis16400_trigger_handler(int irq, void *p)
 	ring->access->store_to(indio_dev->ring, (u8 *) data, pf->timestamp);
 
 	iio_trigger_notify_done(indio_dev->trig);
-	kfree(data);
 
+	kfree(data);
 	return IRQ_HANDLED;
+
+err:
+	kfree(data);
+	return ret;
 }
 
 void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
-- 
1.7.5.2

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