From 1373c0fdbc5b477f5597a3ca9f2c782f15b56886 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 26 Jan 2009 21:33:16 -0800 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 Signed-off-by: David S. Miller --- drivers/net/smsc911x.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c index a4a76f194514..aaf0b4314ce2 100644 --- a/drivers/net/smsc911x.c +++ b/drivers/net/smsc911x.c @@ -1247,7 +1247,7 @@ 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); @@ -1419,11 +1419,6 @@ 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); @@ -1462,11 +1457,9 @@ 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; }