ARM:net: an issue for k which is u32, never < 0
k is u32 which never < 0, need type cast, or cause issue. Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Mircea Gherzan <mgherzan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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