add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/gpu/drm/drm_atomic.c
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@@ -98,6 +98,12 @@
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 	if (!state->planes)
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 		goto fail;
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+	/*
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+	 * Because drm_atomic_state can be committed asynchronously we need our
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+	 * own reference and cannot rely on the on implied by drm_file in the
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+	 * ioctl call.
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+	 */
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+	drm_dev_get(dev);
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 	state->dev = dev;
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 	DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state);
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@@ -257,7 +263,8 @@
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 void __drm_atomic_state_free(struct kref *ref)
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 {
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 	struct drm_atomic_state *state = container_of(ref, typeof(*state), ref);
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-	struct drm_mode_config *config = &state->dev->mode_config;
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+	struct drm_device *dev = state->dev;
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+	struct drm_mode_config *config = &dev->mode_config;
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 	drm_atomic_state_clear(state);
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@@ -269,6 +276,8 @@
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 		drm_atomic_state_default_release(state);
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 		kfree(state);
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 	}
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+
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+	drm_dev_put(dev);
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 }
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 EXPORT_SYMBOL(__drm_atomic_state_free);
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@@ -1010,6 +1019,7 @@
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 	drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name);
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 	drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
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 	drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware);
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+	drm_printf(p, "\tmax_requested_bpc=%d\n", state->max_requested_bpc);
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 	if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
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 		if (state->writeback_job && state->writeback_job->fb)