Commit 499eea18 authored Oct 10, 2006 by Linas Vepstas Committed by Jeff Garzik Oct 11, 2006

[PATCH] powerpc/cell spidernet



Remove a dummy register read that is not needed.
This reduces CPU usage notably during transmit.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: James K Lewis <jklewis@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent 9cc7bf7e

drivers/net/spider_net.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -759,8 +759,6 @@ spider_net_release_tx_chain(struct spider_net_card *card, int brutal)
		unsigned long flags;
		int status;

		spider_net_read_reg(card, SPIDER_NET_GDTDMACCNTR);

		while (chain->tail != chain->head) {
		spin_lock_irqsave(&chain->lock, flags);
		descr = chain->tail;