linux-kernel - [PATCH 1/2] jz4740-adc/jz4740-hwmon: check kmalloc() result

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Message-Id: <1280391953.21676.2.camel@mola>
Date:	Thu, 29 Jul 2010 16:25:53 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Lars-Peter Clausen <lars@...afoo.de>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: [PATCH 1/2] jz4740-adc/jz4740-hwmon: check kmalloc() result

If kmalloc() fails, exit with -ENOMEM.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
This patch is against linux-next.
 drivers/hwmon/jz4740-hwmon.c |    4 ++++
 drivers/mfd/jz4740-adc.c     |    4 ++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/hwmon/jz4740-hwmon.c b/drivers/hwmon/jz4740-hwmon.c
index 72a4335..1c8b3d9 100644
--- a/drivers/hwmon/jz4740-hwmon.c
+++ b/drivers/hwmon/jz4740-hwmon.c
@@ -107,6 +107,10 @@ static int __devinit jz4740_hwmon_probe(struct platform_device *pdev)
 	struct jz4740_hwmon *hwmon;
 
 	hwmon = kmalloc(sizeof(*hwmon), GFP_KERNEL);
+	if (!hwmon) {
+		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
+		return -ENOMEM;
+	}
 
 	hwmon->cell = pdev->dev.platform_data;
 
diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
index 7a844ae..2846d24 100644
--- a/drivers/mfd/jz4740-adc.c
+++ b/drivers/mfd/jz4740-adc.c
@@ -260,6 +260,10 @@ static int __devinit jz4740_adc_probe(struct platform_device *pdev)
 	int irq;
 
 	adc = kmalloc(sizeof(*adc), GFP_KERNEL);
+	if (!adc) {
+		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
+		return -ENOMEM;
+	}
 
 	adc->irq = platform_get_irq(pdev, 0);
 	if (adc->irq < 0) {
-- 
1.5.4.3



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