[PATCH xf86-video-amdgpu] Only call drmmode_scanout_free for non-GPU screens in LeaveVT

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From: Michel Dänzer <michel.daenzer@xxxxxxx>

Destroying the scanout buffers of GPU screens resulted in a crash when
switching back to the Xorg VT.

Fixes: b10ecdbd89b0 ("Use drmmode_crtc_scanout_* helpers for RandR 1.4
                      scanout pixmaps")
(Ported from radeon commit c9dd28cb0c9c3de676eadac61e727732510f6b9b)

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/amdgpu_kms.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/amdgpu_kms.c b/src/amdgpu_kms.c
index 143294a9f..b625250fd 100644
--- a/src/amdgpu_kms.c
+++ b/src/amdgpu_kms.c
@@ -1975,7 +1975,8 @@ void AMDGPULeaveVT_KMS(VT_FUNC_ARGS_DECL)
 	amdgpu_drop_drm_master(pScrn);
 
 	xf86RotateFreeShadow(pScrn);
-	drmmode_scanout_free(pScrn);
+	if (!pScrn->is_gpu)
+		drmmode_scanout_free(pScrn);
 
 	xf86_hide_cursors(pScrn);
 
-- 
2.13.1



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