[PATCH] drm/amdgpu: Fix amdgpu_pm_acpi_event_handler warning

[Jean Delvare]

Include a missing header to get rid of the following warning:

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:65:6: warning: no previous prototype for ‘amdgpu_pm_acpi_event_handler’ [-Wmissing-prototypes]
 void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev)
      ^

Signed-off-by: Jean Delvare <jdelvare at suse.de>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: "Christian König" <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c |    2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h   |    1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

--- linux-4.12.orig/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c	2017-07-30 13:18:54.991917627 +0200
+++ linux-4.12/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c	2017-07-30 13:26:16.786365654 +0200
@@ -30,10 +30,10 @@
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
 #include "amdgpu.h"
+#include "amdgpu_pm.h"
 #include "amd_acpi.h"
 #include "atom.h"
 
-extern void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev);
 /* Call the ATIF method
  */
 /**
--- linux-4.12.orig/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h	2017-07-30 13:18:54.991917627 +0200
+++ linux-4.12/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h	2017-07-30 13:26:16.787365666 +0200
@@ -30,6 +30,7 @@ struct cg_flag_name
 	const char *name;
 };
 
+void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev);
 int amdgpu_pm_sysfs_init(struct amdgpu_device *adev);
 void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev);
 void amdgpu_pm_print_power_states(struct amdgpu_device *adev);


-- 
Jean Delvare
SUSE L3 Support