linux-kernel - [PATCH 3.13.y-ckt 64/80] spi: fsl-dspi: Fix memory leak

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Date:	Thu, 19 Mar 2015 15:35:52 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Axel Lin <axel.lin@...ics.com>, Mark Brown <broonie@...aro.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 64/80] spi: fsl-dspi: Fix memory leak

3.13.11-ckt17 -stable review patch.  If anyone has any objections, please let me know.

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

From: Axel Lin <axel.lin@...ics.com>

commit 0e0cd9ea8961b82947a40471080e7968b634820e upstream.

The memory allocated for chip is not freed anywhere.
Convert to use devm_kzalloc to fix the memory leak.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
Signed-off-by: Mark Brown <broonie@...aro.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/spi/spi-fsl-dspi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index b8d897c..2279278 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -336,7 +336,8 @@ static int dspi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 	/* Only alloc on first setup */
 	chip = spi_get_ctldata(spi);
 	if (chip == NULL) {
-		chip = kcalloc(1, sizeof(struct chip_data), GFP_KERNEL);
+		chip = devm_kzalloc(&spi->dev, sizeof(struct chip_data),
+				    GFP_KERNEL);
 		if (!chip)
 			return -ENOMEM;
 	}
@@ -347,7 +348,6 @@ static int dspi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 		fmsz = spi->bits_per_word - 1;
 	} else {
 		pr_err("Invalid wordsize\n");
-		kfree(chip);
 		return -ENODEV;
 	}
 
-- 
1.9.1

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