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authorColin Ian King <colin.king@canonical.com>2016-10-23 21:56:08 +0100
committerGuenter Roeck <linux@roeck-us.net>2016-10-24 06:05:13 -0700
commit38d8ed65092ed22f52a95f397855cace0260e110 (patch)
tree59b5e01b4d1f349b736a8c0e4ce3cf8f3338cafd /drivers/hwmon
parent07d9a380680d1c0eb51ef87ff2eab5c994949e69 (diff)
hwmon: (core) fix resource leak on devm_kcalloc failure
If dev_kcalloc fails to allocate hw_dev->groups then the current exit path is a direct return, causing a leak of resources such as hwdev and ida is not removed. Fix this by exiting via the free_hwmon exit path that performs the necessary resource cleanup. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/hwmon.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index adae6848ffb2..a74c075a30ec 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -536,8 +536,10 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata,
hwdev->groups = devm_kcalloc(dev, ngroups, sizeof(*groups),
GFP_KERNEL);
- if (!hwdev->groups)
- return ERR_PTR(-ENOMEM);
+ if (!hwdev->groups) {
+ err = -ENOMEM;
+ goto free_hwmon;
+ }
attrs = __hwmon_create_attrs(dev, drvdata, chip);
if (IS_ERR(attrs)) {