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Message-ID: <392fb48f0907112228v52624339x4f6c418ed0ee07a5@mail.gmail.com> Date: Sun, 12 Jul 2009 14:28:04 +0900 From: Mike McCormack <mikem@...g3k.org> To: netdev@...r.kernel.org, shemminger@...ux-foundation.org Subject: [PATCH] sky2: Avoid races in sky2_down Hi Stephen, Resending with sign off. (You may have this in your tree already, but just in case...) I ran some overnight tests with this patch in, and my machine manages to stay up all night, where it crashed within minutes before. Mike --- Reset rx chain before trying to drain it. Shut interrupts off last, incase there's something to report. Signed-off-by: Mike McCormack <mikem@...g3k.org> --- drivers/net/sky2.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index daf961a..23a26d6 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -1825,12 +1825,6 @@ static int sky2_down(struct net_device *dev) if (netif_msg_ifdown(sky2)) printk(KERN_INFO PFX "%s: disabling interface\n", dev->name); - /* Disable port IRQ */ - imask = sky2_read32(hw, B0_IMSK); - imask &= ~portirq_msk[port]; - sky2_write32(hw, B0_IMSK, imask); - sky2_read32(hw, B0_IMSK); - /* Force flow control off */ sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF); @@ -1870,8 +1864,6 @@ static int sky2_down(struct net_device *dev) sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET); - sky2_rx_stop(sky2); - sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET); sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET); @@ -1881,6 +1873,14 @@ static int sky2_down(struct net_device *dev) sky2_write32(hw, STAT_ISR_TIMER_CNT, 0); sky2_read8(hw, STAT_ISR_TIMER_CTRL); + sky2_rx_stop(sky2); + + /* Disable port IRQ */ + imask = sky2_read32(hw, B0_IMSK); + imask &= ~portirq_msk[port]; + sky2_write32(hw, B0_IMSK, imask); + sky2_read32(hw, B0_IMSK); + synchronize_irq(hw->pdev->irq); napi_synchronize(&hw->napi); -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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