Re: net: rnpgbe: Pass an expression directly in rnpgbe_rm_adapter()

[Markus Elfring]

>>>> The address of a data structure member was determined before
>>>> a corresponding null pointer check in the implementation of
>>>> the function “rnpgbe_rm_adapter”.
>>>>
>>>> Thus avoid the risk for undefined behaviour by omitting the variable “hw”.
>>>> Pass the required address directly to a function call.
>>>>
>>>> This issue was detected by using the Coccinelle software.
>>>>
>>>> Fixes: 2ee95ec17e97c58b65e978a08b75fa8cb6424e4e ("net: rnpgbe: Add register_netdev")
>>>
>>> There is no NULL dereference here.  It's just pointer math.
>>> No need for a Fixes tag.
>>
>> How does your view fit to information in an article like “Fun with NULL pointers, part 1”
>> (by Jonathan Corbet from 2009-07-20)?>> https://lwn.net/Articles/342330/
>>
> 
> Of course you can't have NULL pointer dereferences but this is not a
> dereference, it's just pointer math.
Does your understanding of programming language details differ from the view
by Jonathan Corbet?

Regards,
Markus