drm/amdgpu: fix suspend/resume hang regression

BugLink: https://bugs.launchpad.net/bugs/1964361
[ Upstream commit f1ef17011c765495c876fa75435e59eecfdc1ee4 ]

Regression has been reported that suspend/resume may hang with
the previous vm ready check commit.

So bring back the evicted list check as a temp fix.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1922
Fixes: c1a66c3bc425 ("drm/amdgpu: check vm ready by amdgpu_vm->evicting flag")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Qiang Yu <qiang.yu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index a33cb2f4d74442bdd2c7edc5db9bb3097b0ddede..fd37bb39774c8a9c9e3512c808c0b190540c4786 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -777,7 +777,8 @@ bool amdgpu_vm_ready(struct amdgpu_vm *vm)
        amdgpu_vm_eviction_lock(vm);
        ret = !vm->evicting;
        amdgpu_vm_eviction_unlock(vm);
-       return ret;
+
+       return ret && list_empty(&vm->evicted);
 }
 
 /**