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From 2cbbd8648cdd27db8076565943b932ef81337053 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <mdaenzer@redhat.com>
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Date: Fri, 20 Sep 2019 18:47:02 +0200
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Subject: [PATCH xf86-video-ati] Don't set up black scanout buffer if LeaveVT
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is called from CloseScreen
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Avoids a crash described in
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https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/merge_requests/43#note_223718
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(Ported from amdgpu commit 5b8bc9fc505c551dcd9b0ed5ab835a49fa4f9fda)
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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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---
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src/radeon_kms.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/src/radeon_kms.c b/src/radeon_kms.c
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index 777fc14e..107c1ce7 100644
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--- a/src/radeon_kms.c
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+++ b/src/radeon_kms.c
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@@ -2629,6 +2629,12 @@ void RADEONLeaveVT_KMS(ScrnInfoPtr pScrn)
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unsigned w = 0, h = 0;
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int i;
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+ /* If we're called from CloseScreen, trying to clear the black
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+ * scanout BO will likely crash and burn
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+ */
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+ if (!pScreen->GCperDepth[0])
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+ goto hide_cursors;
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+
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/* Compute maximum scanout dimensions of active CRTCs */
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for (i = 0; i < xf86_config->num_crtc; i++) {
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crtc = xf86_config->crtc[i];
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@@ -2701,8 +2707,10 @@ void RADEONLeaveVT_KMS(ScrnInfoPtr pScrn)
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pScrn->displayWidth * info->pixel_bytes * pScrn->virtualY);
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}
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- TimerSet(NULL, 0, 1000, cleanup_black_fb, pScreen);
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+ if (pScreen->GCperDepth[0])
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+ TimerSet(NULL, 0, 1000, cleanup_black_fb, pScreen);
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+ hide_cursors:
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xf86_hide_cursors (pScrn);
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radeon_drop_drm_master(pScrn);
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--
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2.21.0
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