linux-kernel - [PATCH] drm/amdgpu: Fix build without CONFIG_HMM

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Date:   Tue, 9 Jul 2019 17:10:48 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <alexander.deucher@....com>, <christian.koenig@....com>,
        <David1.Zhou@....com>, <airlied@...ux.ie>, <daniel@...ll.ch>,
        <Philip.Yang@....com>, <Felix.Kuehling@....com>
CC:     <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <amd-gfx@...ts.freedesktop.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] drm/amdgpu: Fix build without CONFIG_HMM_MIRROR

If CONFIG_HMM_MIRROR is not set, building may fails:

In file included from drivers/gpu/drm/amd/amdgpu/amdgpu.h:72:0,
                 from drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:40:
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h:69:20: error: field mirror has incomplete type
  struct hmm_mirror mirror;

Fixes: 7590f6d211ec ("drm/amdgpu: Prepare for hmm_range_register API change")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
index 281fd9f..b14f175 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
@@ -65,8 +65,10 @@ struct amdgpu_mn {
 	struct rw_semaphore	lock;
 	struct rb_root_cached	objects;
 
+#if defined(CONFIG_HMM_MIRROR)
 	/* HMM mirror */
 	struct hmm_mirror	mirror;
+#endif
 };
 
 #if defined(CONFIG_HMM_MIRROR)
-- 
2.7.4