From f9a66c7f5fa2262656a1a38ae9b57a2a89980f36 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Mon, 30 Jan 2006 11:37:58 -0800 Subject: [PATCH] [PATCH] sky2: clear irq race Move the interrupt clear to before processing, this avoids a possible races with status delaying. Signed-off-by: Stephen Hemminger Signed-off-by: Jeff Garzik --- drivers/net/sky2.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 6cd075e1f38a..aff7b9dee38e 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -1833,6 +1833,8 @@ static int sky2_poll(struct net_device *dev0, int *budget) u16 hwidx; u16 tx_done[2] = { TX_NO_STATUS, TX_NO_STATUS }; + sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ); + hwidx = sky2_read16(hw, STAT_PUT_IDX); BUG_ON(hwidx >= STATUS_RING_SIZE); rmb(); @@ -1912,12 +1914,10 @@ static int sky2_poll(struct net_device *dev0, int *budget) } exit_loop: - sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ); - sky2_tx_check(hw, 0, tx_done[0]); sky2_tx_check(hw, 1, tx_done[1]); - if (sky2_read16(hw, STAT_PUT_IDX) == hw->st_idx) { + if (likely(work_done < to_do)) { /* need to restart TX timer */ if (is_ec_a1(hw)) { sky2_write8(hw, STAT_TX_TIMER_CTRL, TIM_STOP); -- 2.20.1