On Sat, Oct 6, 2012 at 6:10 AM, Christopher Heiny <cheiny@xxxxxxxxxxxxx> 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.
(...)
> +#ifdef CONFIG_RMI4_DEBUG
> +
> +#include <linux/debugfs.h>
> +#include <linux/uaccess.h>
Just move these up to the common includes. It doesn't matter
that they get included even when debug is not enabled.
> +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?
> +struct i2c_debugfs_data {
> + bool done;
Done with what? ... needs some doc.
> + 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?
(...)
> +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?
Yours,
Linus Walleij
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