mv643xx_eth: get rid of modulo operations

Get rid of the modulo operations that are currently used for
computing successive TX/RX descriptor ring indexes.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
This commit is contained in:
Lennert Buytenhek 2008-08-23 23:45:28 +02:00 • committed by Lennert Buytenhek
commit 9da7874575