[patch 6/8] kernel/resource.c: fix sign extension in reserve_setup()

[Greg KH]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Zhang Rui <rui.zhang@xxxxxxxxx>

commit 8bc1ad7dd301b7ca7454013519fa92e8c53655ff upstream.

When the 32-bit signed quantities get assigned to the u64 resource_size_t,
they are incorrectly sign-extended.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13253
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=9905

Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Reported-by: Leann Ogasawara <leann@xxxxxxxxxx>
Cc: Pierre Ossman <drzeus@xxxxxxxxx>
Reported-by: <pablomme@xxxxxxxxxxxxxx>
Tested-by: <pablomme@xxxxxxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 kernel/resource.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -741,7 +741,7 @@ static int __init reserve_setup(char *st
 	static struct resource reserve[MAXRESERVE];
 
 	for (;;) {
-		int io_start, io_num;
+		unsigned int io_start, io_num;
 		int x = reserved;
 
 		if (get_option (&str, &io_start) != 2)


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