Re: [PATCH] drm/amd/display: fix unused variable warning

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On 2021-01-25 7:48 a.m., Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@xxxxxxxx>

After all users of the 'dm' warnings got hidden in an #ifdef,
the compiler started warning about it being unused:

drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:5380:33: error: unused variable 'dm' [-Werror,-Wunused-variable]

Add another such #ifdef.

Fixes: 98ab5f3513f9 ("drm/amd/display: Fix deadlock during gpu reset v3")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>

Harry

---
  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index a90dc4d31c32..37bf2dd87e1e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5377,7 +5377,9 @@ static inline int dm_set_vblank(struct drm_crtc *crtc, bool enable)
  	struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
  	struct amdgpu_device *adev = drm_to_adev(crtc->dev);
  	struct dm_crtc_state *acrtc_state = to_dm_crtc_state(crtc->state);
+#if defined(CONFIG_DRM_AMD_DC_DCN)
  	struct amdgpu_display_manager *dm = &adev->dm;
+#endif
  	int rc = 0;
if (enable) {

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