drm/i915/gvt: fix dead locking in early workload shadow

As early workload scan and shadow happens in execlist mmio handler,
which has already taken vgpu_lock. So remove extra lock taking here.

Fixes: 952f89f098c7 ("drm/i915/gvt: Wean off struct_mutex")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 36bb7639e82fbb3afaeae1ad1f9f20c8ed1a47f8..a5b942ee3ceb98f95ba8c27a9ead921de8b807c1 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -1584,9 +1584,7 @@ intel_vgpu_create_workload(struct intel_vgpu *vgpu, int ring_id,
         */
        if (list_empty(workload_q_head(vgpu, ring_id))) {
                intel_runtime_pm_get(&dev_priv->runtime_pm);
-               mutex_lock(&vgpu->vgpu_lock);
                ret = intel_gvt_scan_and_shadow_workload(workload);
-               mutex_unlock(&vgpu->vgpu_lock);
                intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm);
        }