Re: [PATCH for-next v3 2/2] RDMA/rxe: Call rxe_set_mtu after rxe_register_device

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On Tue, Sep 19, 2023 at 03:25:00AM +0000, Zhijian Li (Fujitsu) wrote:
> 
> 
> On 19/09/2023 09:11, Zhu Yanjun wrote:
> > On Tue, Sep 19, 2023 at 8:57 AM Zhijian Li (Fujitsu)
> > <lizhijian@xxxxxxxxxxx> wrote:
> >>
> >>
> >>
> >> On 18/09/2023 20:37, Leon Romanovsky wrote:
> >>> On Mon, Sep 18, 2023 at 10:05:43AM +0800, Li Zhijian wrote:
> >>>> rxe_set_mtu() will call rxe_info_dev() to print message, and
> >>>> rxe_info_dev() expects dev_name(rxe->ib_dev->dev) has been assigned.
> >>>>
> >>>> Previously since dev_name() is not set, when a new rxe link is being
> >>>> added, 'null' will be used as the dev_name like:
> >>>>
> >>>> "(null): rxe_set_mtu: Set mtu to 1024"
> >>>>
> >>>> Move rxe_register_device() earlier to assign the correct dev_name
> >>>> so that it can be read by rxe_set_mtu() later.
> >>>
> >>> I would expect removal of that print line instead of moving
> >>> rxe_register_device().
> >>
> >>
> >> I also struggled with this point. The last option is keep it as it is.
> >> Once rxe is registered, this print will work fine.
> > 
> > I delved into the source code. About moving rxe_register_device, I
> > could not find any harm to the driver.
> 
> The point i'm struggling was that, it's strange/opaque to move rxe_register_device().
> There is no doubt that the original order was more clear.
> 
> In terms of the message content, is it valuable to print(pr_info) this message

I doubt if that print has any value in day-to-day use of RXE.

Thanks



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