[PATCH] drm/amdgpu: clean function declaration in amdgpu_pm.c up

[Baoyou Xie]

We get 1 warning when building kernel with W=1:
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:37:6: warning: no previous prototype for 'amdgpu_pm_acpi_event_handler' [-Wmissing-prototypes]

In fact, this function is declared in
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c, but should be
declared in a header file, thus can be recognized in other file.

So this patch moves the declaration into
drivers/gpu/drm/amd/amdgpu/amdgpu.h.

Signed-off-by: Baoyou Xie <baoyou.xie@xxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h      | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 3208608..8e3d9b2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -2466,6 +2466,7 @@ struct amdgpu_afmt_acr {
 };
 
 struct amdgpu_afmt_acr amdgpu_afmt_acr(uint32_t clock);
+extern void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev);
 
 /* amdgpu_acpi.c */
 #if defined(CONFIG_ACPI)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 5cd7b73..eaaba0d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -32,7 +32,6 @@
 #include "amd_acpi.h"
 #include "atom.h"
 
-extern void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev);
 /* Call the ATIF method
  */
 /**
-- 
2.7.4