linux-kernel - Re: [PATCH linux-next v2] mlx5: wrong page mask if CONFIG_ARCH_DMA_ADDR_T

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Message-ID: <20150415031203.GA4881@honli.nay.redhat.com>
Date:	Wed, 15 Apr 2015 11:12:03 +0800
From:	Honggang LI <honli@...hat.com>
To:	Eli Cohen <eli@....mellanox.co.il>
Cc:	netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH linux-next v2] mlx5: wrong page mask if
 CONFIG_ARCH_DMA_ADDR_T_64BIT enabled for 32Bit architectures

On Tue, Apr 14, 2015 at 10:23:16PM +0300, Eli Cohen wrote:
> On Mon, Apr 13, 2015 at 05:21:58PM +0800, Honggang Li wrote:
> > @@ -241,7 +243,7 @@ static void free_4k(struct mlx5_core_dev *dev, u64 addr)
> >  static int alloc_system_page(struct mlx5_core_dev *dev, u16 func_id)
> >  {
> >  	struct page *page;
> > -	u64 addr;
> > +	u64 addr = 0;
> >  	int err;
> >  	int nid = dev_to_node(&dev->pdev->dev);
> >  
> 
> I really don't see any reason why you need to set addr to 0. Can you
> please explain this?
> Other than that the patch is ok.

Sorry, I trid my best to explain it. But failed. I'm fine to remove it.
New patch will be submit. And I will insert a fix tag in it.

Fix(bf0bf77 mlx5: Support communicating arbitrary host page size to
firmware)

thanks
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