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-----Original Message-----
From: Jiawei <Jiawei.Gu@xxxxxxx>
Sent: Monday, April 20, 2020 7:34 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Gu, JiaWei (Will) <JiaWei.Gu@xxxxxxx>
Subject: [PATCH] SWDEV-231280 CentOS-AWS Guest driver reload 3 failed with call trace in guest
root cause:
X enables vblank, but driver skips shutting down vblank during unloading under sriov, which causes kernel call trace
solution:
move vblank shutdown logic into dce_virtual_crtc_disable() to avoid sriov skip
Signed-off-by: Jiawei <Jiawei.Gu@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index 3f739efead61..c02797f2ee7f 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -191,8 +191,9 @@ static void dce_virtual_crtc_disable(struct drm_crtc *crtc) {
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
- dce_virtual_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+ drm_crtc_vblank_off(crtc);
+ amdgpu_crtc->enabled = false;
amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
amdgpu_crtc->encoder = NULL;
amdgpu_crtc->connector = NULL;
--
2.20.1
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