# Re: \[PATCH\] powerpc/powernv/prd: Unregister OPAL\_MSG\_PRD2 notifier during module unload

- From: Vasant Hegde \<hidden\>
- Date: 2021-10-28 16:59:00 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/10/9524893
- Thread: https://ratatoskr.run/linuxppc-dev/2021/09/9524530/t.md

```text
On 10/1/21 11:40 AM, Daniel Axtens wrote:
> Hi Vasant,
>
>> Commit 587164cd, introduced new opal message type (OPAL_MSG_PRD2) and added
>> opal notifier. But I missed to unregister the notifier during module unload
>> path. This results in below call trace if you try to unload and load
>> opal_prd module.
>>
>> Fixes: 587164cd ("powerpc/powernv: Add new opal message type")
>
> In reviewing this patch, I've become a bit worried the underlying patch
> has another issue that we should fix.

Thanks for the review. I have addressed below comments in v2.

-Vasant

```