[PATCH 3/3] hack to satisfy lockdep?

Maarten Lankhorst maarten.lankhorst at linux.intel.com
Mon Apr 19 13:51:44 UTC 2021


Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gtt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c
index 9dc4d78e7ca7..7574bcfcdbf7 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.c
@@ -136,6 +136,10 @@ void i915_address_space_init(struct i915_address_space *vm, int subclass)
 	/* CHV + VTD workaround use stop_machine(), so can't lock the vm->mutex in the shrinker */
 	if (!intel_vm_no_concurrent_access_wa(vm->i915))
 		i915_gem_shrinker_taints_mutex(vm->i915, &vm->mutex);
+	else {
+		mutex_lock(&vm->mutex);
+		mutex_unlock(&vm->mutex);
+	}
 	dma_resv_init(&vm->resv);
 
 	GEM_BUG_ON(!vm->total);
-- 
2.31.0



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