From d6ec084200c37683278c821338f74ddf21ab80f5 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Mon, 22 Oct 2007 20:01:06 +0200
Subject: Add CONFIG_DEBUG_SG sg validation

Add a Kconfig entry which will toggle some sanity checks on the sg
entry and tables.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 include/asm-sh/scatterlist.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include/asm-sh')

diff --git a/include/asm-sh/scatterlist.h b/include/asm-sh/scatterlist.h
index bc7c809e16f..a7d0d1856a9 100644
--- a/include/asm-sh/scatterlist.h
+++ b/include/asm-sh/scatterlist.h
@@ -4,6 +4,9 @@
 #include <asm/types.h>
 
 struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+    unsigned long sg_magic;
+#endif
     unsigned long page_link;
     unsigned int offset;/* for highmem, page offset */
     dma_addr_t dma_address;
-- 
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