diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_sw_fence.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sw_fence.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c index 6a88db291252..1584f34a6bf9 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence.c +++ b/drivers/gpu/drm/i915/i915_sw_fence.c @@ -12,6 +12,12 @@ #include "i915_sw_fence.h" #include "i915_selftest.h" +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) +#define I915_SW_FENCE_BUG_ON(expr) BUG_ON(expr) +#else +#define I915_SW_FENCE_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr) +#endif + #define I915_SW_FENCE_FLAG_ALLOC BIT(3) /* after WQ_FLAG_* for safety */ static DEFINE_SPINLOCK(i915_sw_fence_lock); @@ -218,13 +224,21 @@ void __i915_sw_fence_init(struct i915_sw_fence *fence, { BUG_ON(!fn || (unsigned long)fn & ~I915_SW_FENCE_MASK); + __init_waitqueue_head(&fence->wait, name, key); + fence->flags = (unsigned long)fn; + + i915_sw_fence_reinit(fence); +} + +void i915_sw_fence_reinit(struct i915_sw_fence *fence) +{ debug_fence_init(fence); - __init_waitqueue_head(&fence->wait, name, key); atomic_set(&fence->pending, 1); fence->error = 0; - fence->flags = (unsigned long)fn; + I915_SW_FENCE_BUG_ON(!fence->flags); + I915_SW_FENCE_BUG_ON(!list_empty(&fence->wait.head)); } void i915_sw_fence_commit(struct i915_sw_fence *fence) |