On 21.02.2018 15:27, Andy Shevchenko wrote:
> On Wed, Feb 21, 2018 at 10:55 AM, Andrzej Hajda <a.hajda@xxxxxxxxxxx> wrote:
>> Since extcon property is not allowed in DT, extcon subsystem requires
>> another way to get extcon device. Lets try the simplest approach - get
>> edev by of_node.
>> +/*
>> + * extcon_get_edev_by_of_node - Get the extcon device from devicetree.
>> + * @node : OF node identyfying edev
>> + *
>> + * Return the pointer of extcon device if success or ERR_PTR(err) if fail.
>> + */
>> +struct extcon_dev *extcon_get_edev_by_of_node(struct device_node *node)
> First of all, the all other similar cases use "_by_node" in the name.
OK, looks better.
> Second, it's not _get_, it's _find_.
The patch splits exisiting extcon_get_edev_by_phandle function into two
functions, nothing more.
Thus it followed naming convention present in extcon framework. I can
switch it of course to _find_.
>
>> +{
>> + struct extcon_dev *edev;
>> +
>> + mutex_lock(&extcon_dev_list_lock);
>> + list_for_each_entry(edev, &extcon_dev_list, entry)
>> + if (edev->dev.parent && edev->dev.parent->of_node == node)
>> + goto out;
>> + edev = ERR_PTR(-EPROBE_DEFER);
>> +out:
>> + mutex_unlock(&extcon_dev_list_lock);
>> +
>> + return edev;
> Can't it be done using bus_find_device()?
There is no special extcon bus, so I am not sure. Anyway if it can, it
should be done probably in another patch.
Regards
Andrzej
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