Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030415AbWJJVPd (ORCPT ); Tue, 10 Oct 2006 17:15:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030416AbWJJVPd (ORCPT ); Tue, 10 Oct 2006 17:15:33 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:18909 "EHLO e36.co.us.ibm.com") by vger.kernel.org with ESMTP id S1030408AbWJJVPa (ORCPT ); Tue, 10 Oct 2006 17:15:30 -0400 Date: Tue, 10 Oct 2006 16:15:29 -0500 To: akpm@osdl.org Cc: jeff@garzik.org, Arnd Bergmann , netdev@vger.kernel.org, James K Lewis , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: [PATCH 16/21]: powerpc/cell spidernet Message-ID: <20061010211528.GM4381@austin.ibm.com> References: <20061010204946.GW4381@austin.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061010204946.GW4381@austin.ibm.com> User-Agent: Mutt/1.5.11 From: linas@austin.ibm.com (Linas Vepstas) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1090 Lines: 30 Remove a dummy register read that is not needed. This reduces CPU usage notably during transmit. Signed-off-by: Linas Vepstas Cc: Arnd Bergmann Cc: James K Lewis ---- drivers/net/spider_net.c | 2 -- 1 file changed, 2 deletions(-) Index: linux-2.6.18-mm2/drivers/net/spider_net.c =================================================================== --- linux-2.6.18-mm2.orig/drivers/net/spider_net.c 2006-10-10 13:20:08.000000000 -0500 +++ linux-2.6.18-mm2/drivers/net/spider_net.c 2006-10-10 13:21:41.000000000 -0500 @@ -759,8 +759,6 @@ spider_net_release_tx_chain(struct spide 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; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/