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

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Date:   Mon, 19 Feb 2018 10:18:17 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Dave Airlie <airlied@...ux.ie>,
        DRI <dri-devel@...ts.freedesktop.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Chunming Zhou <david1.zhou@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Monk Liu <monk.liu@....com>,
        Christian König <christian.koenig@....com>,
        Michel Dänzer <michel.daenzer@....com>
Subject: linux-next: build warning after merge of the drm tree

Hi all,

After merging the drm tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

In file included from include/linux/list.h:9:0,
                 from include/linux/wait.h:7,
                 from include/linux/wait_bit.h:8,
                 from include/linux/fs.h:6,
                 from include/linux/highmem.h:5,
                 from drivers/gpu/drm/drm_memory.c:36:
drivers/gpu/drm/drm_memory.c: In function 'drm_get_max_iomem':
include/linux/kernel.h:808:16: warning: comparison of distinct pointer types lacks a cast
  (void) (&max1 == &max2);   \
                ^
include/linux/kernel.h:817:2: note: in expansion of macro '__max'
  __max(typeof(x), typeof(y),   \
  ^~~~~
drivers/gpu/drm/drm_memory.c:159:15: note: in expansion of macro 'max'
   max_iomem = max(max_iomem,  tmp->end);
               ^~~

Introduced by commit

  82626363a217 ("drm: add func to get max iomem address v2")

tmp->end is a resource_size_t ...

-- 
Cheers,
Stephen Rothwell

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