[PATCH] drm/amdgpu: fix the build error if disable CONFIG_DEBUG_FS

[Huang Rui]

This patch fixes the build error if CONFIG_DEBUG_FS is not enabled.
Otherwise, below error will be triggered.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
master
head:   89a39f3c7086301342175c461c4db43c68d34cc7
commit: 4f0955fcc052b556446f6f041ad8c83d70c3b253 [6871/9973] drm/amdgpu: export
test ib debugfs interface
config: x86_64-randconfig-s1-06281413 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 4f0955fcc052b556446f6f041ad8c83d70c3b253
        # save the attached .config to linux build tree
        make ARCH=x86_64

All errors (new ones prefixed by >>):

>> ERROR: "amdgpu_debugfs_test_ib_ring_init" [drivers/gpu/drm/amd/amdgpu/
amdgpu.ko] undefined!

Reported-by: kbuild test robot <fengguang.wu at intel.com>
Signed-off-by: Huang Rui <ray.huang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 9cf7cdf..97c98bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3899,7 +3899,7 @@ int amdgpu_debugfs_init(struct drm_minor *minor)
 	return 0;
 }
 #else
-static int amdgpu_debugfs_test_ib_init(struct amdgpu_device *adev)
+static int amdgpu_debugfs_test_ib_ring_init(struct amdgpu_device *adev)
 {
 	return 0;
 }
-- 
2.7.4