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diff --git a/qcom/pd-mapper/assoc.h b/qcom/pd-mapper/assoc.h
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+/*
+ * Copyright (c) 2013, Bjorn Andersson <bjorn@kryo.se>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ASSOC_H__
+#define __ASSOC_H__
+
+struct assoc {
+	unsigned long size;
+	unsigned long fill;
+
+	const char **keys;
+	void **values;
+};
+
+void assoc_init(struct assoc *assoc, unsigned long size);
+void *assoc_get(struct assoc *assoc, const char *key);
+void assoc_set(struct assoc *assoc, const char *key, void *value);
+const char *assoc_next(struct assoc *assoc, void **value, unsigned long *iter);
+void assoc_destroy(struct assoc *assoc);
+
+#define assoc_foreach(key, value, assoc, iter) \
+	for ((iter) = 0, (key) = assoc_next((assoc), (value), &(iter)); \
+	     (key); \
+	     (key) = assoc_next((assoc), (value), &(iter)))
+
+#endif