diff options
| author | Francois Romieu <romieu@fr.zoreil.com> | 2007-08-02 02:00:48 +0400 |
|---|---|---|
| committer | Francois Romieu <romieu@electric-eye.fr.zoreil.com> | 2007-08-07 02:07:36 +0400 |
| commit | 313b0305b5a1e7e0fb39383befbf79558ce68a9c (patch) | |
| tree | 1e74626aa9a9c348a216335248fa98c28584124b /drivers/net/r8169.c | |
| parent | 2584fbc3a61897de5eddd56b39a4fa9cd074eca2 (diff) | |
| download | linux-313b0305b5a1e7e0fb39383befbf79558ce68a9c.tar.xz | |
r8169: avoid needless NAPI poll scheduling
Theory : though needless, it should not have hurt.
Practice: it does not play nice with DEBUG_SHIRQ + LOCKDEP + UP
(see https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=242572).
The patch makes sense in itself but I should dig why it has an effect
on #242572 (assuming that NAPI do not change in a near future).
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>
Diffstat (limited to 'drivers/net/r8169.c')
| -rw-r--r-- | drivers/net/r8169.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index ec4f545c491f..631e55dbbdd0 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -2767,14 +2767,16 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance) rtl8169_check_link_status(dev, tp, ioaddr); #ifdef CONFIG_R8169_NAPI - RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event); - tp->intr_mask = ~tp->napi_event; - - if (likely(netif_rx_schedule_prep(dev))) - __netif_rx_schedule(dev); - else if (netif_msg_intr(tp)) { - printk(KERN_INFO "%s: interrupt %04x taken in poll\n", - dev->name, status); + if (status & tp->napi_event) { + RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event); + tp->intr_mask = ~tp->napi_event; + + if (likely(netif_rx_schedule_prep(dev))) + __netif_rx_schedule(dev); + else if (netif_msg_intr(tp)) { + printk(KERN_INFO "%s: interrupt %04x in poll\n", + dev->name, status); + } } break; #else |