linux-kernel - Re: [PATCH] gpu: drm: omapdrm: Adding new typedef vm_fault

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Date:   Tue, 22 May 2018 23:30:49 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, tomi.valkeinen@...com, airlied@...ux.ie,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH] gpu: drm: omapdrm: Adding new typedef vm_fault_t

>    drivers/gpu//drm/omapdrm/omap_gem.c: In function 'fault_2d':
>    drivers/gpu//drm/omapdrm/omap_gem.c:480:9: error: implicit declaration of function 'vmf_error'; did you mean '__pmd_error'? [-Werror=implicit-function-declaration]
>       ret = vmf_error(err);

I think, drm-next and next-20180517 tree doesn't have vmf_error() included.
As of now it's only available in 4.17-rc6.

>             ^~~~~~~~~
>             __pmd_error
>>> drivers/gpu//drm/omapdrm/omap_gem.c:503:9: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
>      return ret;
>             ^~~
>    cc1: some warnings being treated as errors
>

I will fix this in v2.