[PATCH 02/16] drm/amdgpu: include protection for doobell.h

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From: Shashank Sharma <contactshashanksharma@xxxxxxxxx>

This patch adds double include protection for doorbell.h

Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Christian Koenig <christian.koenig@xxxxxxx>
Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
index 12263986f889..6064943a1b53 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
@@ -21,6 +21,9 @@
  *
  */
 
+#ifndef AMDGPU_DOORBELL_H
+#define AMDGPU_DOORBELL_H
+
 /*
  * GPU doorbell structures, functions & helpers
  */
@@ -308,3 +311,4 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v);
 #define RDOORBELL64(index) amdgpu_mm_rdoorbell64(adev, (index))
 #define WDOORBELL64(index, v) amdgpu_mm_wdoorbell64(adev, (index), (v))
 
+#endif
\ No newline at end of file
-- 
2.40.0




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