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Message-Id: <1232985472-16995-1-git-send-email-steve.glendinning@smsc.com> Date: Mon, 26 Jan 2009 15:57:52 +0000 From: Steve Glendinning <steve.glendinning@...c.com> To: netdev@...r.kernel.org Cc: David Miller <davem@...emloft.net>, Ian Saturley <ian.saturley@...c.com>, Steve Glendinning <steve.glendinning@...c.com> Subject: [PATCH] smsc911x: leave RX_STOP interrupt permanently enabled smsc911x_set_multicast_list currently performs the only non-atomic read-modify-write of INT_EN. This patch permanently enables the RXSTOP_INT interrupt, and changes the ISR to only conditionally run the multicast filter workaround code. Signed-off-by: Steve Glendinning <steve.glendinning@...c.com> --- drivers/net/smsc911x.c | 13 +++---------- 1 files changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c index f513bdf..29ffb0e 100644 --- a/drivers/net/smsc911x.c +++ b/drivers/net/smsc911x.c @@ -1246,7 +1246,7 @@ static int smsc911x_open(struct net_device *dev) napi_enable(&pdata->napi); temp = smsc911x_reg_read(pdata, INT_EN); - temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_); + temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_ | INT_EN_RXSTOP_INT_EN_); smsc911x_reg_write(pdata, INT_EN, temp); spin_lock_irq(&pdata->mac_lock); @@ -1418,11 +1418,6 @@ static void smsc911x_set_multicast_list(struct net_device *dev) /* Request the hardware to stop, then perform the * update when we get an RX_STOP interrupt */ - smsc911x_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_); - temp = smsc911x_reg_read(pdata, INT_EN); - temp |= INT_EN_RXSTOP_INT_EN_; - smsc911x_reg_write(pdata, INT_EN, temp); - temp = smsc911x_mac_read(pdata, MAC_CR); temp &= ~(MAC_CR_RXEN_); smsc911x_mac_write(pdata, MAC_CR, temp); @@ -1461,11 +1456,9 @@ static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id) /* Called when there is a multicast update scheduled and * it is now safe to complete the update */ SMSC_TRACE(INTR, "RX Stop interrupt"); - temp = smsc911x_reg_read(pdata, INT_EN); - temp &= (~INT_EN_RXSTOP_INT_EN_); - smsc911x_reg_write(pdata, INT_EN, temp); smsc911x_reg_write(pdata, INT_STS, INT_STS_RXSTOP_INT_); - smsc911x_rx_multicast_update_workaround(pdata); + if (pdata->multicast_update_pending) + smsc911x_rx_multicast_update_workaround(pdata); serviced = IRQ_HANDLED; } -- 1.6.0.6 -- 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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