commit 5f3f24faf322e54752d1df00cdb768a013de5d1f
author Alexey Dobriyan <adobriyan@gmail.com> Mon Nov 13 16:12:08 2006 -0800
committer David S. Miller <davem@sunset.davemloft.net> Sat Dec 02 21:22:25 2006 -0800
tree 81a8bf76d9165d3f0798f2cbd6cb967d35b54d3c
parent 2ee92d46c6cabedd50edf6f273fa8cf84f707618

[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>