Re: [PATCH v9 1/5] driver core: Find an existing link between two devices

[Tomasz Figa]

On Wed, Mar 14, 2018 at 8:12 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> On Tuesday, March 13, 2018 12:23:34 PM CET Tomasz Figa wrote:
>> On Tue, Mar 13, 2018 at 7:34 PM, Vivek Gautam
>> <vivek.gautam@xxxxxxxxxxxxxx> wrote:
>> > Hi Tomasz,
>> >
>> > On Tue, Mar 13, 2018 at 3:45 PM, Tomasz Figa <tfiga@xxxxxxxxxxxx> wrote:
>> >> Hi Vivek,
>> >>
>> >> Thanks for the patch.
>> >>
>> >> On Tue, Mar 13, 2018 at 5:55 PM, Vivek Gautam
>> >> <vivek.gautam@xxxxxxxxxxxxxx> wrote:
>> >>> The lists managing the device-links can be traversed to
>> >>> find the link between two devices. The device_link_add() APIs
>> >>> does traverse these lists to check if there's already a link
>> >>> setup between the two devices.
>> >>> So, add a new APIs, device_link_find(), to find an existing
>> >>> device link between two devices - suppliers and consumers.
>> >>
>> >> I'm wondering if this API would be useful for anything else that the
>> >> problem we're trying to solve with deleting links without storing them
>> >> anywhere. Perhaps a device_link_del_dev(consumer, supplier) would be a
>> >> better alternative?
>> >
>> > Yea, that sounds simpler i think. Will add this API instead of
>> > find_link(). Thanks.
>>
>> Perhaps let's wait for a moment to see if there are other opinions. :)
>>
>> Rafael, Lucas, any thoughts?
>
> It is not clear to me what the device_link_del_dev(consumer, supplier) would do.

It would delete a link between consumer and supplier.

Best regards,
Tomasz