Instead of manipulating the object's cache domain, just use the device
coherent map to write the batch buffer.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
.../drm/i915/gem/selftests/i915_gem_context.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index d3f87dc4eda3..e02299fffe60 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -1622,7 +1622,7 @@ static int read_from_scratch(struct i915_gem_context *ctx,
if (err)
goto out_vm;
- cmd = i915_gem_object_pin_map(obj, I915_MAP_WB);
+ cmd = i915_gem_object_pin_map(obj, I915_MAP_WC);
if (IS_ERR(cmd)) {
err = PTR_ERR(cmd);
goto out;
@@ -1658,7 +1658,7 @@ static int read_from_scratch(struct i915_gem_context *ctx,
if (err)
goto out_vm;
- cmd = i915_gem_object_pin_map(obj, I915_MAP_WB);
+ cmd = i915_gem_object_pin_map(obj, I915_MAP_WC);
if (IS_ERR(cmd)) {
err = PTR_ERR(cmd);
goto out;
@@ -1707,15 +1707,17 @@ static int read_from_scratch(struct i915_gem_context
*ctx,
i915_vma_unpin(vma);
+ i915_request_get(rq);
i915_request_add(rq);
- i915_gem_object_lock(obj, NULL);
- err = i915_gem_object_set_to_cpu_domain(obj, false);
- i915_gem_object_unlock(obj);
- if (err)
+ if (i915_request_wait(rq, 0, HZ / 5) < 0) {
+ i915_request_put(rq);
+ err = -ETIME;
goto out_vm;
+ }
+ i915_request_put(rq);
- cmd = i915_gem_object_pin_map(obj, I915_MAP_WB);
+ cmd = i915_gem_object_pin_map(obj, I915_MAP_WC);
if (IS_ERR(cmd)) {
err = PTR_ERR(cmd);
goto out_vm;
--
2.20.1
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