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authorPan Bian <bianpan2016@163.com>2017-04-24 16:22:08 +0800
committerSebastian Reichel <sre@kernel.org>2017-05-01 11:52:25 +0200
commit8b20839988f1ed5e534b270f3776709b640dc7e0 (patch)
treed1963cd2437b0e124c8bf926bf5a941b8abd0ce1 /drivers/power
parent756e142a4b3b25aac44eaa54ded125fce0e8fcc7 (diff)
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power: supply: isp1704: Fix unchecked return value of devm_kzalloc
Function devm_kzalloc() will return a NULL pointer. However, in function isp1704_charger_probe(), the return value of devm_kzalloc() is directly used without validation. This may result in a bad memory access bug. Fixes: 34a109610e2a ("isp1704_charger: Add DT support") Signed-off-by: Pan Bian <bianpan2016@163.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/supply/isp1704_charger.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/power/supply/isp1704_charger.c b/drivers/power/supply/isp1704_charger.c
index 4cd6899b961e..95af5f305838 100644
--- a/drivers/power/supply/isp1704_charger.c
+++ b/drivers/power/supply/isp1704_charger.c
@@ -418,6 +418,10 @@ static int isp1704_charger_probe(struct platform_device *pdev)
pdata = devm_kzalloc(&pdev->dev,
sizeof(struct isp1704_charger_data), GFP_KERNEL);
+ if (!pdata) {
+ ret = -ENOMEM;
+ goto fail0;
+ }
pdata->enable_gpio = gpio;
dev_info(&pdev->dev, "init gpio %d\n", pdata->enable_gpio);