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| author | Chris Wilson | 2016-08-02 23:50:26 +0200 |
|---|---|---|
| committer | Chris Wilson | 2016-08-02 23:58:20 +0200 |
| commit | 8e6371783738b29f92ab3b8916c652a4a600dd52 (patch) | |
| tree | 3f4ec05d47a3673a805d8d49baa05faa2df3cc52 /drivers/gpu/drm/i915/intel_display.c | |
| parent | drm/i915: Reduce engine->emit_flush() to a single mode parameter (diff) | |
| download | kernel-qcow2-linux-8e6371783738b29f92ab3b8916c652a4a600dd52.tar.gz kernel-qcow2-linux-8e6371783738b29f92ab3b8916c652a4a600dd52.tar.xz kernel-qcow2-linux-8e6371783738b29f92ab3b8916c652a4a600dd52.zip | |
drm/i915: Simplify request_alloc by returning the allocated request
If is simpler and leads to more readable code through the callstack if
the allocation returns the allocated struct through the return value.
The importance of this is that it no longer looks like we accidentally
allocate requests as side-effect of calling certain functions.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1469432687-22756-19-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470174640-18242-9-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3f05c6243632..993bcfbd7cdc 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -11575,7 +11575,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, struct intel_flip_work *work; struct intel_engine_cs *engine; bool mmio_flip; - struct drm_i915_gem_request *request = NULL; + struct drm_i915_gem_request *request; int ret; /* @@ -11682,22 +11682,6 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, mmio_flip = use_mmio_flip(engine, obj); - /* When using CS flips, we want to emit semaphores between rings. - * However, when using mmio flips we will create a task to do the - * synchronisation, so all we want here is to pin the framebuffer - * into the display plane and skip any waits. - */ - if (!mmio_flip) { - ret = i915_gem_object_sync(obj, engine, &request); - if (!ret && !request) { - request = i915_gem_request_alloc(engine, NULL); - ret = PTR_ERR_OR_ZERO(request); - } - - if (ret) - goto cleanup_pending; - } - ret = intel_pin_and_fence_fb_obj(fb, primary->state->rotation); if (ret) goto cleanup_pending; @@ -11715,14 +11699,24 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, schedule_work(&work->mmio_work); } else { - i915_gem_request_assign(&work->flip_queued_req, request); + request = i915_gem_request_alloc(engine, engine->last_context); + if (IS_ERR(request)) { + ret = PTR_ERR(request); + goto cleanup_unpin; + } + + ret = i915_gem_object_sync(obj, request); + if (ret) + goto cleanup_request; + ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, request, page_flip_flags); if (ret) - goto cleanup_unpin; + goto cleanup_request; intel_mark_page_flip_active(intel_crtc, work); + work->flip_queued_req = i915_gem_request_get(request); i915_add_request_no_flush(request); } @@ -11737,11 +11731,11 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, return 0; +cleanup_request: + i915_add_request_no_flush(request); cleanup_unpin: intel_unpin_fb_obj(fb, crtc->primary->state->rotation); cleanup_pending: - if (!IS_ERR_OR_NULL(request)) - i915_add_request_no_flush(request); atomic_dec(&intel_crtc->unpin_work_count); mutex_unlock(&dev->struct_mutex); cleanup: |