linux-kernel - Re: linux-next: build failure after merge of the xen-tip tree

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Date:   Thu, 16 Aug 2018 10:09:13 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Dave Airlie <airlied@...ux.ie>,
        DRI <dri-devel@...ts.freedesktop.org>
Cc:     Juergen Gross <jgross@...e.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Xen Devel <Xen-devel@...ts.xensource.com>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Christian König <christian.koenig@....com>,
        Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
Subject: Re: linux-next: build failure after merge of the xen-tip tree

Hi all,

On Mon, 30 Jul 2018 15:12:13 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the xen-tip tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> drivers/xen/gntdev-dmabuf.c:360:12: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
>   .attach = dmabuf_exp_ops_attach,
>             ^~~~~~~~~~~~~~~~~~~~~
> 
> Caused by commit
> 
>   a240d6e42e28 ("xen/gntdev: Implement dma-buf export functionality")
> 
> interacting with commit
> 
>   a19741e5e5a9 ("dma_buf: remove device parameter from attach callback v2")
> 
> from the drm tree.
> 
> I have added the following merge fix patch:
> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Mon, 30 Jul 2018 15:08:21 +1000
> Subject: [PATCH] xen/gntdev: fix up for attach callback API change
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  drivers/xen/gntdev-dmabuf.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/xen/gntdev-dmabuf.c b/drivers/xen/gntdev-dmabuf.c
> index faaa4d3970ea..744cfe9b0311 100644
> --- a/drivers/xen/gntdev-dmabuf.c
> +++ b/drivers/xen/gntdev-dmabuf.c
> @@ -217,7 +217,6 @@ dmabuf_pages_to_sgt(struct page **pages, unsigned int nr_pages)
>  }
>  
>  static int dmabuf_exp_ops_attach(struct dma_buf *dma_buf,
> -				 struct device *target_dev,
>  				 struct dma_buf_attachment *attach)
>  {
>  	struct gntdev_dmabuf_attachment *gntdev_dmabuf_attach;

This is now a conflict between Linus' tree and the drm tree.

-- 
Cheers,
Stephen Rothwell

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