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

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Date:	Thu, 17 Mar 2016 09:41:19 +0100
From:	Christian König <christian.koenig@....com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Dave Airlie <airlied@...ux.ie>
CC:	<linux-next@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Alex Deucher <alexander.deucher@....com>
Subject: Re: linux-next: build failure after merge of the drm tree

Hi Stephen,

yeah, indeed the release_pages() function is now used in two more files.

Your fix is Reviewed-by: Christian König <christian.koenig@....com>.

Regards,
Christian.

Am 17.03.2016 um 05:41 schrieb Stephen Rothwell:
> Hi Dave,
>
> After merging the drm tree, today's linux-next build (powerpc
> allyesconfig) failed like this:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c: In function 'amdgpu_gem_userptr_ioctl':
> drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c:321:2: error: implicit declaration of function 'release_pages' [-Werror=implicit-function-declaration]
>    release_pages(bo->tbo.ttm->pages, bo->tbo.ttm->num_pages, false);
>    ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c: In function 'amdgpu_cs_parser_bos':
> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c:410:5: error: implicit declaration of function 'release_pages' [-Werror=implicit-function-declaration]
>       release_pages(e->user_pages,
>       ^
>
> Caused by commit
>
>    2f568dbd6b94 ("drm/amdgpu: move get_user_pages out of amdgpu_ttm_tt_pin_userptr v6")
>
> Presumably a forgotten include file.
>
> I added this fix patch for today:
>
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Thu, 17 Mar 2016 15:30:49 +1100
> Subject: [PATCH] drm/amdgpu: release_pages requires linux/pagemap.h
>
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c  | 1 +
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 1 +
>   2 files changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index 4f5ef4149e87..9392e50a7ba4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@ -25,6 +25,7 @@
>    *    Jerome Glisse <glisse@...edesktop.org>
>    */
>   #include <linux/list_sort.h>
> +#include <linux/pagemap.h>
>   #include <drm/drmP.h>
>   #include <drm/amdgpu_drm.h>
>   #include "amdgpu.h"
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> index 1ecdf6c01368..0f2391ec1ed9 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> @@ -26,6 +26,7 @@
>    *          Jerome Glisse
>    */
>   #include <linux/ktime.h>
> +#include <linux/pagemap.h>
>   #include <drm/drmP.h>
>   #include <drm/amdgpu_drm.h>
>   #include "amdgpu.h"