From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nithin Nayak Sujir" Subject: [PATCH net-next] tg3: Update link_up flag for phylib devices Date: Thu, 7 Mar 2013 18:45:27 -0800 Message-ID: <1362710727-15438-1-git-send-email-nsujir@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, hirofumi@mail.parknet.co.jp, "Nithin Nayak Sujir" , "Michael Chan" To: davem@davemloft.net Return-path: Received: from mms1.broadcom.com ([216.31.210.17]:3211 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933068Ab3CHCq6 (ORCPT ); Thu, 7 Mar 2013 21:46:58 -0500 Sender: netdev-owner@vger.kernel.org List-ID: Commit f4a46d1f46a8fece34edd2023e054072b02e110d introduced a bug where the ifconfig stats would remain 0 for phylib devices. This is due to tp->link_up flag never becoming true causing tg3_periodic_fetch_stats() to return. The link_up flag was being updated in tg3_test_and_report_link_chg() after setting up the phy. This function however, is not called for phylib devices since the driver does not do the phy setup. This patch moves the link_up flag update into the common tg3_link_report() function that gets called for phylib devices as well for non phylib devices when the link state changes. To avoid updating link_up twice, we replace tg3_carrier_...() calls that are followed by tg3_link_report(), with netif_carrier_...(). We can then remove the unused tg3_carrier_on() function. Reported-by: OGAWA Hirofumi Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/tg3.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 2b2bee6..0c1a2ef 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -1870,6 +1870,8 @@ static void tg3_link_report(struct tg3 *tp) tg3_ump_link_report(tp); } + + tp->link_up = netif_carrier_ok(tp->dev); } static u16 tg3_advert_flowctrl_1000X(u8 flow_ctrl) @@ -2523,12 +2525,6 @@ static int tg3_phy_reset_5703_4_5(struct tg3 *tp) return err; } -static void tg3_carrier_on(struct tg3 *tp) -{ - netif_carrier_on(tp->dev); - tp->link_up = true; -} - static void tg3_carrier_off(struct tg3 *tp) { netif_carrier_off(tp->dev); @@ -2554,7 +2550,7 @@ static int tg3_phy_reset(struct tg3 *tp) return -EBUSY; if (netif_running(tp->dev) && tp->link_up) { - tg3_carrier_off(tp); + netif_carrier_off(tp->dev); tg3_link_report(tp); } @@ -4403,9 +4399,9 @@ static bool tg3_test_and_report_link_chg(struct tg3 *tp, int curr_link_up) { if (curr_link_up != tp->link_up) { if (curr_link_up) { - tg3_carrier_on(tp); + netif_carrier_on(tp->dev); } else { - tg3_carrier_off(tp); + netif_carrier_off(tp->dev); if (tp->phy_flags & TG3_PHYFLG_MII_SERDES) tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT; } -- 1.8.1.4