From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Tue, 14 Nov 2006 00:12:08 +0000 (-0800)
Subject: [ATM] ambassador,firestream: "-1 >>" is implementation defined
X-Git-Tag: v2.6.20-rc1~34^2~40^2~383
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f3f24faf322e54752d1df00cdb768a013de5d1f;p=pandora-kernel.git

[ATM] ambassador,firestream: "-1 >>" is implementation defined

6.5.7(5): The result of E1 >> E2 is E1 right-shifted E2 bit positions.
		...
	If E1 has a signed type and a negative value, the resulting value
	is implementation defined.

So, cast -1 to unsigned type to make result well-defined.

[ Modified to use ~0U based upon recommendation from Al Viro. -DaveM ]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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