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platform/chrome: cros_ec: Fix leak in sequence_store()

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The allocated cros_ec_command message structure is not freed in function
sequence_store(). Make sure that 'msg' is freed in all exit paths.
Detected by Coverity CID 1309667.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Christian Engelmayer 2015-07-18 19:30:33 +02:00 committed by Olof Johansson
parent 23ecee32b9
commit 88dfb8b43d
1 changed files with 14 additions and 9 deletions
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23
drivers/platform/chrome/cros_ec_lightbar.c
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@ -352,10 +352,6 @@ static ssize_t sequence_store(struct device *dev, struct device_attribute *attr,
struct cros_ec_dev *ec = container_of(dev,
struct cros_ec_dev, class_dev);
msg = alloc_lightbar_cmd_msg(ec);
if (!msg)
return -ENOMEM;
for (len = 0; len < count; len++)
if (!isalnum(buf[len]))
break;
@ -370,21 +366,30 @@ static ssize_t sequence_store(struct device *dev, struct device_attribute *attr,
return ret;
}
msg = alloc_lightbar_cmd_msg(ec);
if (!msg)
return -ENOMEM;
param = (struct ec_params_lightbar *)msg->data;
param->cmd = LIGHTBAR_CMD_SEQ;
param->seq.num = num;
ret = lb_throttle();
if (ret)
return ret;
goto exit;
ret = cros_ec_cmd_xfer(ec->ec_dev, msg);
if (ret < 0)
return ret;
goto exit;
if (msg->result != EC_RES_SUCCESS)
return -EINVAL;
if (msg->result != EC_RES_SUCCESS) {
ret = -EINVAL;
goto exit;
}
return count;
ret = count;
exit:
kfree(msg);
return ret;
}
/* Module initialization */