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Message-ID: <1340724786-3819-1-git-send-email-cjren@qca.qualcomm.com> Date: Tue, 26 Jun 2012 12:33:06 -0300 From: "Ren, Cloud" <cjren@....qualcomm.com> To: <davem@...emloft.net>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: <qca-linux-team@...lcomm.com>, <nic-devel@...lcomm.com>, xiong <xiong@....qualcomm.com> Subject: [PATCH 1/1] atl1c: fix issue of transmit queue 0 timed out From: xiong <xiong@....qualcomm.com> some people report atl1c could cause system hang with following kernel trace info: --------------------------------------- WARNING: at.../net/sched/sch_generic.c:258 dev_watchdog+0x1db/0x1d0() ... NETDEV WATCHDOG: eth0 (atl1c): transmit queue 0 timed out ... --------------------------------------- This is caused by netif_stop_queue calling when cable Link is down but netif_wake_queue isn't called when cable Link is resume. Signed-off-by: xiong <xiong@....qualcomm.com> Signed-off-by: Cloud Ren <cjren@....qualcomm.com> --- drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c index 85717cb..c2736c4 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c @@ -351,6 +351,8 @@ static void atl1c_common_task(struct work_struct *work) atl1c_irq_disable(adapter); atl1c_check_link_status(adapter); atl1c_irq_enable(adapter); + if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) + netif_wake_queue(netdev); } } -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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