From 3a8090030fad79d143daa3df00ee367d86ada75a Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Fri, 2 Sep 2016 14:33:57 -0400
Subject: driver: internals: added the static inlined slbt_get_driver_ictx()
 helper.

---
 src/internal/slibtool_driver_impl.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/internal/slibtool_driver_impl.h')

diff --git a/src/internal/slibtool_driver_impl.h b/src/internal/slibtool_driver_impl.h
index f79f9e3..19549ad 100644
--- a/src/internal/slibtool_driver_impl.h
+++ b/src/internal/slibtool_driver_impl.h
@@ -84,4 +84,16 @@ struct slbt_unit_ctx_impl {
 	struct slbt_unit_ctx	uctx;
 };
 
+static inline struct slbt_driver_ctx_impl * slbt_get_driver_ictx(const struct slbt_driver_ctx * dctx)
+{
+	uintptr_t addr;
+
+	if (dctx) {
+		addr = (uintptr_t)dctx - offsetof(struct slbt_driver_ctx_impl,ctx);
+		return (struct slbt_driver_ctx_impl *)addr;
+	}
+
+	return 0;
+}
+
 #endif
-- 
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