Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756632Ab3DADDX (ORCPT ); Sun, 31 Mar 2013 23:03:23 -0400 Received: from rtits2.realtek.com ([60.250.210.242]:37379 "EHLO rtits2.realtek.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755766Ab3DADDW (ORCPT ); Sun, 31 Mar 2013 23:03:22 -0400 X-SpamFilter-By: BOX Solutions SpamTrap 5.19 with qID r313393U000463, This message is released by code: ctlocs8528 From: Hayes Wang To: CC: , , , Hayes Wang Subject: [PATCH v2] r8169: fix auto speed down issue Date: Mon, 1 Apr 2013 11:02:04 +0800 Message-ID: <1364785324-1604-1-git-send-email-hayeswang@realtek.com> X-Mailer: git-send-email 1.8.1 In-Reply-To: <1364541062-9024-1-git-send-email-hayeswang@realtek.com> References: <1364541062-9024-1-git-send-email-hayeswang@realtek.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2100 Lines: 65 It would cause no link after suspending or shutdowning when the nic changes the speed to 10M and connects to a link partner which forces the speed to 100M. Check the link partner ability to determine which speed to set. Signed-off-by: Hayes Wang --- drivers/net/ethernet/realtek/r8169.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 28fb50a..bdc03a9 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -3818,6 +3818,30 @@ static void rtl_init_mdio_ops(struct rtl8169_private *tp) } } +static void rtl_speed_down(struct rtl8169_private *tp) +{ + u32 adv; + int lpa; + + rtl_writephy(tp, 0x1f, 0x0000); + lpa = rtl_readphy(tp, MII_LPA); + + if (lpa & (LPA_10HALF | LPA_10FULL)) + adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; + else if (lpa & (LPA_100HALF | LPA_100FULL)) + adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; + else + adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | + (tp->mii.supports_gmii ? + ADVERTISED_1000baseT_Half | + ADVERTISED_1000baseT_Full : 0); + + rtl8169_set_speed(tp->dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL, + adv); +} + static void rtl_wol_suspend_quirk(struct rtl8169_private *tp) { void __iomem *ioaddr = tp->mmio_addr; @@ -3848,9 +3872,7 @@ static bool rtl_wol_pll_power_down(struct rtl8169_private *tp) if (!(__rtl8169_get_wol(tp) & WAKE_ANY)) return false; - rtl_writephy(tp, 0x1f, 0x0000); - rtl_writephy(tp, MII_BMCR, 0x0000); - + rtl_speed_down(tp); rtl_wol_suspend_quirk(tp); return true; -- 1.8.1 -- 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/