Re: [PATCH 05/11] net: core: provide devm_register_netdev()

[Heiner Kallweit]

On 08.05.2020 00:56, Jakub Kicinski wrote:
> On Thu, 7 May 2020 19:03:44 +0200 Bartosz Golaszewski wrote:
>>> To implement Edwin's suggestion? Makes sense, but I'm no expert, let's
>>> also CC Heiner since he was asking about it last time.  
>>
>> Yes, because taking the last bit of priv_flags from net_device seems
>> to be more controversial but if net maintainers are fine with that I
>> can simply go with the current approach.
> 
> From my perspective what Edwin suggests makes sense. Apart from
> little use for the bit after probe, it also seems cleaner for devres 
> to be able to recognize managed objects based on its own state.
> 
What I was saying is that we should catch the case that a driver
author uses a device-managed register() w/o doing the same for the
alloc(). A core function should not assume that driver authors do
sane things only.
I don't have a strong preference how it should be done.
Considering what is being discussed, have a look at get_pci_dr() and
find_pci_dr(), they deal with managing which parts of the PCI
subsystem are device-managed.