From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next 11/12] e1000e: use hardware default values for Transmit Control register Date: Wed, 25 Jan 2012 23:21:54 -0800 Message-ID: <1327562515-29664-12-git-send-email-jeffrey.t.kirsher@intel.com> References: <1327562515-29664-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Bruce Allan , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga01.intel.com ([192.55.52.88]:17059 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751705Ab2AZHWC (ORCPT ); Thu, 26 Jan 2012 02:22:02 -0500 In-Reply-To: <1327562515-29664-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Bruce Allan This code snippet is simply writing default values to the register which is unnecessary since the values are programmed into the register by default. There is a special case for 80003es2lan needing the Retransmit on Late Collision bit set but that is also done in e1000_init_hw_80003es2lan(). Signed-off-by: Bruce Allan Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/netdev.c | 10 +--------- 1 files changed, 1 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index fb29990..89af6c0 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -2770,7 +2770,7 @@ static void e1000_configure_tx(struct e1000_adapter *adapter) struct e1000_hw *hw = &adapter->hw; struct e1000_ring *tx_ring = adapter->tx_ring; u64 tdba; - u32 tdlen, tctl, tarc; + u32 tdlen, tarc; /* Setup the HW Tx Head and Tail descriptor pointers */ tdba = tx_ring->dma; @@ -2808,12 +2808,6 @@ static void e1000_configure_tx(struct e1000_adapter *adapter) /* erratum work around: set txdctl the same for both queues */ ew32(TXDCTL(1), er32(TXDCTL(0))); - /* Program the Transmit Control Register */ - tctl = er32(TCTL); - tctl &= ~E1000_TCTL_CT; - tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | - (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); - if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { tarc = er32(TARC(0)); /* @@ -2845,8 +2839,6 @@ static void e1000_configure_tx(struct e1000_adapter *adapter) /* enable Report Status bit */ adapter->txd_cmd |= E1000_TXD_CMD_RS; - ew32(TCTL, tctl); - e1000e_config_collision_dist(hw); } -- 1.7.7.6