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References: <20190402105006.48f93e53@canb.auug.org.au>
In-Reply-To: <20190402105006.48f93e53@canb.auug.org.au>
From:   Qiang Yu <yuq825@gmail.com>
Date:   Tue, 2 Apr 2019 13:55:03 +0800
Message-ID: <CAKGbVbvj9cZnJuey_ra7U+xm-JhoB17bpTgcXKiKaHWbjB9Sxw@mail.gmail.com>
Subject: Re: linux-next: build failure after merge of the drm-misc tree
To:     Stephen Rothwell <sfr@canb.auug.org.au>
Cc:     Daniel Vetter <daniel.vetter@ffwll.ch>,
        Intel Graphics <intel-gfx@lists.freedesktop.org>,
        DRI <dri-devel@lists.freedesktop.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Eric Anholt <eric@anholt.net>,
        Matthew Wilcox <willy@infradead.org>
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Thanks, patch is:
Reviewed-by: Qiang Yu <yuq825@gmail.com>

Regards,
Qiang

On Tue, Apr 2, 2019 at 7:50 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Hi all,
>
> After merging the drm-misc tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> In file included from include/linux/kernel.h:7,
>                  from include/asm-generic/bug.h:18,
>                  from arch/x86/include/asm/bug.h:83,
>                  from include/linux/bug.h:5,
>                  from include/linux/mmdebug.h:5,
>                  from include/linux/gfp.h:5,
>                  from include/linux/slab.h:15,
>                  from drivers/gpu/drm/lima/lima_ctx.c:4:
> drivers/gpu/drm/lima/lima_ctx.c: In function 'lima_ctx_create':
> include/linux/limits.h:13:18: warning: passing argument 3 of 'xa_alloc' makes pointer from integer without a cast [-Wint-conversion]
>  #define UINT_MAX (~0U)
>                   ^~~~~
> drivers/gpu/drm/lima/lima_ctx.c:26:36: note: in expansion of macro 'UINT_MAX'
>   err = xa_alloc(&mgr->handles, id, UINT_MAX, ctx, GFP_KERNEL);
>                                     ^~~~~~~~
> In file included from include/linux/radix-tree.h:31,
>                  from include/linux/idr.h:15,
>                  from include/drm/drm_device.h:7,
>                  from drivers/gpu/drm/lima/lima_device.h:7,
>                  from drivers/gpu/drm/lima/lima_ctx.c:6:
> include/linux/xarray.h:817:9: note: expected 'void *' but argument is of type 'unsigned int'
>    void *entry, struct xa_limit limit, gfp_t gfp)
>    ~~~~~~^~~~~
> drivers/gpu/drm/lima/lima_ctx.c:26:46: error: incompatible type for argument 4 of 'xa_alloc'
>   err = xa_alloc(&mgr->handles, id, UINT_MAX, ctx, GFP_KERNEL);
>                                               ^~~
> In file included from include/linux/radix-tree.h:31,
>                  from include/linux/idr.h:15,
>                  from include/drm/drm_device.h:7,
>                  from drivers/gpu/drm/lima/lima_device.h:7,
>                  from drivers/gpu/drm/lima/lima_ctx.c:6:
> include/linux/xarray.h:817:32: note: expected 'struct xa_limit' but argument is of type 'struct lima_ctx *'
>    void *entry, struct xa_limit limit, gfp_t gfp)
>                 ~~~~~~~~~~~~~~~~^~~~~
>
> Caused by commit
>
>   a1d2a6339961 ("drm/lima: driver for ARM Mali4xx GPUs")
>
> interacting with commit
>
>   a3e4d3f97ec8 ("XArray: Redesign xa_alloc API")
>
> from Linus' tree (v5.1-rc1).
>
> I have applied the following patch for today.  It could be applied as
> part of a merge of v5.1-rc1 into drm-misc.
>
> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Tue, 2 Apr 2019 10:45:32 +1100
> Subject: [PATCH] drm/lima: update for xa_alloc API change
>
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
>  drivers/gpu/drm/lima/lima_ctx.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/lima/lima_ctx.c b/drivers/gpu/drm/lima/lima_ctx.c
> index c8d12f7c6894..bafa00d74cc5 100644
> --- a/drivers/gpu/drm/lima/lima_ctx.c
> +++ b/drivers/gpu/drm/lima/lima_ctx.c
> @@ -23,7 +23,7 @@ int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id)
>                         goto err_out0;
>         }
>
> -       err = xa_alloc(&mgr->handles, id, UINT_MAX, ctx, GFP_KERNEL);
> +       err = xa_alloc(&mgr->handles, id, ctx, XA_LIMIT(*id, UINT_MAX), GFP_KERNEL);
>         if (err < 0)
>                 goto err_out0;
>
> --
> 2.20.1
>
> --
> Cheers,
> Stephen Rothwell