[i2c] i2c-remove-redundant-i2c_client-list.patch

[Jean Delvare]

On Sun, 6 Jan 2008 11:43:33 -0800, David Brownell wrote:
> Remove further duplication between i2c core and driver model:  the
> per-adapter list of clients (adapter->clients,  client->list) and
> its lock (adapter->clist_lock) duplicate adapter->dev.children.
> 
> Add and use a new i2c_verify_client() routine to help code which
> traverses the driver model tree.
>  
> Signed-off-by: David Brownell <dbrownell at users.sourceforge.net>
> ---
> LIGHTLY TESTED ... goes on top of two patches from Jean's I2C queue,
> 
> 	i2c-remove-redundant-i2c_adapter-list.patch
> 	i2c-remove-redundant-i2c_driver-list.patch
> 
> Updated per Jean's comments.  (Note that the i2c_verify_client
> bit might usefully be split out into a separate patch, to simplify
> converting the V4L code that uses this i2c client list.)

Agreed, I'll split things up as needed so that we have a clean
incremental patch set.

> (...)
>  static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
>  {
> -	struct device * const dev = container_of(kobj, struct device, kobj);
> -	return to_i2c_client(dev);
> +	return i2c_verify_client(container_of(kobj, struct device, kobj));
>  }

Unless you have a reason to think that this is really needed, I think
I'll back this change out as explained in my previous post. All the
rest looks just fine to me, thanks!

-- 
Jean Delvare