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path: root/drivers/gpu/drm/i915/intel_ringbuffer.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
-rw-r--r--drivers/gpu/drm/i915/intel_ringbuffer.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index d56f384938f7..f62afffef682 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -784,6 +784,7 @@ static void i9xx_submit_request(struct drm_i915_gem_request *request)
i915_gem_request_submit(request);
+ GEM_BUG_ON(!IS_ALIGNED(request->tail, 8));
I915_WRITE_TAIL(request->engine, request->tail);
}
@@ -795,6 +796,7 @@ static void i9xx_emit_breadcrumb(struct drm_i915_gem_request *req, u32 *cs)
*cs++ = MI_USER_INTERRUPT;
req->tail = intel_ring_offset(req, cs);
+ GEM_BUG_ON(!IS_ALIGNED(req->tail, 8));
}
static const int i9xx_emit_breadcrumb_sz = 4;
@@ -833,6 +835,7 @@ static void gen8_render_emit_breadcrumb(struct drm_i915_gem_request *req,
*cs++ = MI_NOOP;
req->tail = intel_ring_offset(req, cs);
+ GEM_BUG_ON(!IS_ALIGNED(req->tail, 8));
}
static const int gen8_render_emit_breadcrumb_sz = 8;