linux-kernel - PATCH] firewire: add padding to some struct

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Date:	Fri, 18 Jul 2008 16:58:53 +0800
From:	"JiSheng Zhang" <jszhang3@...l.ustc.edu.cn>
To:	stefanr@...6.in-berlin.de
Cc:	linux-kernel@...r.kernel.org,
	linux1394-devel@...ts.sourceforge.net, krh@...hat.com
Subject: PATCH] firewire: add padding to some struct

>From JiSheng Zhang <jszhang3@...l.ustc.edu.cn>

struct fw_cdev_event_response and struct fw_cdev_event_iso_interrupt need padding.
Otherwise, offset of the zero length array is not equal to the struct size. It may
cause some strange problems under some platforms such as sparc32. This
patch(against 2.6.26) should fix it.


--- old/include/linux/firewire-cdev.h	2008-07-18 16:34:01.181794046 +0800
+++ new/include/linux/firewire-cdev.h	2008-07-18 16:35:46.649294275 +0800
@@ -92,6 +92,7 @@
 	__u32 type;
 	__u32 rcode;
 	__u32 length;
+	__u32 pad;
 	__u32 data[0];
 };
 
@@ -143,6 +144,7 @@
 	__u32 type;
 	__u32 cycle;
 	__u32 header_length;
+	__u32 pad;
 	__u32 header[0];
 };
 


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