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SubjectRE: [RFC PATCH 03/06] input/rmi4: I2C physical interface
Date
Linus Walleij wrote:
> On Sat, Oct 6, 2012 at 6:10 AM, Christopher Heiny <cheiny@synaptics.com> wrote:
> > The I2C physical driver is not extensively changed in terms of
> > functionality since the previous patch. Management of the attention GPIO
> > has been moved to rmi_driver.c (see previous email), and most of the
> > debug related interfaces have been moved from sysfs to debugfs. Control
> > of the debug features has been moved from compile-time to runtime
> > switches available via debugfs.
> >
> > The core I2C functionality was previously ACKed by Jean Delvare. I don't
> > believe that portion of the code has changed much since then, but we'd
> > appreciate a second glance at this.
>
> The above commit blurb looks more like a changelog than a description
> of the actual patch. Nothing wrong with that but begin by describing
> the patch first.

Good point. I was describing the patch, but not from the correct point of view. :-)

[snip some items covered in a previous email]

>
> > +static int setup_debugfs(struct rmi_device *rmi_dev, struct rmi_i2c_data
> > *data); +static void teardown_debugfs(struct rmi_i2c_data *data);
>
> Why do you need to forward-declare these? Can't you just move them
> up above the functions using them?

Probably. We'll do that if possible.

>
> > +struct i2c_debugfs_data {
> > + bool done;
>
> Done with what? ... needs some doc.

OK.

>
> > + struct rmi_i2c_data *i2c_data;
> > +};
>
> (...)
>
> > +static int __devinit rmi_i2c_probe(struct i2c_client *client,
> > + const struct i2c_device_id *id)
>
> (...)
>
> > + rmi_phys = kzalloc(sizeof(struct rmi_phys_device), GFP_KERNEL);
>
> (...)
>
> > + data = kzalloc(sizeof(struct rmi_i2c_data), GFP_KERNEL);
>
> Can you use devm_kzalloc(&client->dev, ...) for these so you don't
> need to free() them explicitly?

Hmmmmmm. That looks like a merge regression - I'm pretty sure we implemented devm_kzalloc there.

>
> (...)
>
> > +static int __devexit rmi_i2c_remove(struct i2c_client *client)
> > +{
> > + struct rmi_phys_device *phys = i2c_get_clientdata(client);
> > + struct rmi_device_platform_data *pd = client->dev.platform_data;
> > +
> > + /* Can I remove this disable_device */
> > + /*disable_device(phys); */
>
> So just delete these two lines then?

Yes.

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