linux-kernel - RE: [PATCH for-next 10/20] IB/hns: Modify the init of iboe lock

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Date:   Wed, 14 Sep 2016 02:09:37 +0000
From:   Salil Mehta <salil.mehta@...wei.com>
To:     Leon Romanovsky <leon@...nel.org>
CC:     "dledford@...hat.com" <dledford@...hat.com>,
        "Huwei (Xavier)" <xavier.huwei@...wei.com>,
        oulijun <oulijun@...wei.com>,
        "Zhuangyuzeng (Yisen)" <yisen.zhuang@...wei.com>,
        "xuwei (O)" <xuwei5@...ilicon.com>,
        "mehta.salil.lnk@...il.com" <mehta.salil.lnk@...il.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linuxarm <linuxarm@...wei.com>,
        "Huangdongdong (Donald)" <hdd.huang@...wei.com>
Subject: RE: [PATCH for-next 10/20] IB/hns: Modify the init of iboe lock



> -----Original Message-----
> From: linux-rdma-owner@...r.kernel.org [mailto:linux-rdma-
> owner@...r.kernel.org] On Behalf Of Leon Romanovsky
> Sent: Tuesday, September 13, 2016 7:50 AM
> To: Salil Mehta
> Cc: dledford@...hat.com; Huwei (Xavier); oulijun; Zhuangyuzeng (Yisen);
> xuwei (O); mehta.salil.lnk@...il.com; linux-rdma@...r.kernel.org;
> linux-kernel@...r.kernel.org; Linuxarm; Huangdongdong (Donald)
> Subject: Re: [PATCH for-next 10/20] IB/hns: Modify the init of iboe
> lock
> 
> On Fri, Sep 09, 2016 at 06:30:41PM +0800, Salil Mehta wrote:
> > From: Lijun Ou <oulijun@...wei.com>
> >
> > This lock will be used in query port interface, and will be called
> > while IB device was registered to OFED frame. So, the lock of iboe
> > must be initiated before IB device was registered.
> 
> Sorry,
> what did you mean by writing "OFED frame"?
It is a typo. It was OFED framework but I guess more appropriate word 
might have been 'IB core' layer of Infiniband. Will fix this. Thanks! 

Best regards
Salil
> 
> >
> > Signed-off-by: Lijun Ou <oulijun@...wei.com>
> > Signed-off-by: Dongdong Huang(Donald) <hdd.huang@...wei.com>
> > Reviewed-by:  Wei Hu (Xavier) <xavier.huwei@...wei.com>
> > Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
> > ---
> >  drivers/infiniband/hw/hns/hns_roce_main.c |    3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c
> b/drivers/infiniband/hw/hns/hns_roce_main.c
> > index 2704076..4721c0c 100644
> > --- a/drivers/infiniband/hw/hns/hns_roce_main.c
> > +++ b/drivers/infiniband/hw/hns/hns_roce_main.c
> > @@ -615,6 +615,7 @@ static int hns_roce_register_device(struct
> hns_roce_dev *hr_dev)
> >  	struct device *dev = &hr_dev->pdev->dev;
> >
> >  	iboe = &hr_dev->iboe;
> > +	spin_lock_init(&iboe->lock);
> >
> >  	ib_dev = &hr_dev->ib_dev;
> >  	strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX);
> > @@ -701,8 +702,6 @@ static int hns_roce_register_device(struct
> hns_roce_dev *hr_dev)
> >  		goto error_failed_setup_mtu_gids;
> >  	}
> >
> > -	spin_lock_init(&iboe->lock);
> > -
> >  	iboe->nb.notifier_call = hns_roce_netdev_event;
> >  	ret = register_netdevice_notifier(&iboe->nb);
> >  	if (ret) {
> > --
> > 1.7.9.5
> >
> > --
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