At 2022-06-16 01:57:49, "Guenter Roeck" <linux@xxxxxxxxxxxx> wrote:
>
>Please use proper subject lines. Here it should have been
>
>hwmon: (gsc-hwmon) Add missing of_node_put()
Thanks, I will change it in my new patch.
>>> drivers/hwmon/gsc-hwmon.c | 6 +++++-
>> 1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/hwmon/gsc-hwmon.c b/drivers/hwmon/gsc-hwmon.c
>> index 1fe37418ff46..34c20d13627a 100644
>> --- a/drivers/hwmon/gsc-hwmon.c
>> +++ b/drivers/hwmon/gsc-hwmon.c
>> @@ -268,10 +268,14 @@ gsc_hwmon_get_devtree_pdata(struct device *dev)
>>
>> /* fan controller base address */
>> fan = of_find_compatible_node(dev->parent->of_node, NULL, "gw,gsc-fan");
>
>A single of_node_put(fan) here would have been be sufficient.
I think of_node_put after should come after its usage, right?
>>> - if (fan && of_property_read_u32(fan, "reg", &pdata->fan_base)) {
>> + if (fan && of_property_read_u32(fan, "reg", &pdata->fan_base)) {
>> + of_node_put(fan);
>> dev_err(dev, "fan node without base\n");
>> return ERR_PTR(-EINVAL);
>> }
>> +
>> + /* if fan&&!of_property_read_u32 fail */
>
>This comment only adds confusion and does not add any value.
Sorry, I just want to say, if *fan* is not NULL, but of_property_read_u32() returns 0.
In that case, we still need a of_node_put() to release fan, right?
>
>Guenter
>
>> + of_node_put(fan);
>>
>> /* allocate structures for channels and count instances of each type */
>> device_for_each_child_node(dev, child) {
Hi, Guenter, I am preparing my new patch and I want to discuss your suggestions as above.
