[PATCH 4.4 9/9] net/ncsi: Improve HNCDSC AEN handler

[Joel Stanley]

On Fri, Oct 21, 2016 at 1:11 PM, Gavin Shan <gwshan at linux.vnet.ibm.com> wrote:
> On Fri, Oct 21, 2016 at 12:09:37PM +1030, Joel Stanley wrote:
>>Hi Gavin,
>>
>>On Fri, Oct 21, 2016 at 11:17 AM, Gavin Shan <gwshan at linux.vnet.ibm.com> wrote:
>>> This improves AEN handler for Host Network Controller Driver Status
>>> Change (HNCDSC):
>>>
>>>    * The channel's lock should be hold when accessing its state.
>>>    * Do failover when host driver isn't ready.
>>>    * Configure channel when host driver becomes ready.
>>>
>>> NOTE: The first one isn't applied to the code in dev-4.4.
>>
>>Can you clarify what you mean here?
>>
>
> Joel, dev-4.4 is using old NCSI old where we don't have a spinlock
> for NCSI channel. dev-4.7 and upstream code has one to ensure the
> consistent read/update on NCSI channel'state. The commit log was
> picked from the patch merged to linux.net (branch: "net"), meaning
> the commit log corresponds to the code changes for upstream code.
>
> This piece of changes isn't applied to dev-4.4. So I put a note
> to clarify it. I'm too lazy and it could be more meaningful actually :)

Okay, thanks for the explanation.

Cheers,

Joel