Re: [PATCH v7 3/7] drivers/i2c: Add port structure to FSI algorithm

[Eddie James <eajames@linux.vnet.ibm.com>]

On 05/30/2018 04:16 PM, Benjamin Herrenschmidt wrote:
> On Wed, 2018-05-30 at 10:47 -0500, Eddie James wrote:
>>>> +       if (!list_empty(&i2c->ports)) {
>>> My gosh, this is done already in list_for_each*()
>> No, list_for_each_entry does NOT check if the list is empty or if the
>> first entry is NULL.
> NULL is never valid for a list. It does however check for an empty list
>
> It does it implicitely in the test part of the for () statement,
> checking if the next pointer points back to the head.

Thanks Ben. My mistake on this one; I misread the macro. I will remove 
the check in v9... going to wait a little for any further comments now.

Thanks,
Eddie

>
> Cheers,
> Ben.
>
>