diff options
| author | Michael Brown | 2010-11-12 00:57:10 +0100 |
|---|---|---|
| committer | Michael Brown | 2010-11-12 00:57:10 +0100 |
| commit | f12251551504b5838f4b6f0a974244504eca69e7 (patch) | |
| tree | c6c46669d79fab4d68140be4370eb729b8a1bbd6 /src/drivers/net/forcedeth.c | |
| parent | [tcp] Set PSH flag only on packets containing data (diff) | |
| download | ipxe-f12251551504b5838f4b6f0a974244504eca69e7.tar.gz ipxe-f12251551504b5838f4b6f0a974244504eca69e7.tar.xz ipxe-f12251551504b5838f4b6f0a974244504eca69e7.zip | |
[forcedeth] Exit poll() as early as possible if no work to do
Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/drivers/net/forcedeth.c')
| -rw-r--r-- | src/drivers/net/forcedeth.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/drivers/net/forcedeth.c b/src/drivers/net/forcedeth.c index cce7cd1e..26bbdc8d 100644 --- a/src/drivers/net/forcedeth.c +++ b/src/drivers/net/forcedeth.c @@ -990,6 +990,10 @@ forcedeth_poll ( struct net_device *netdev ) status = readl ( ioaddr + NvRegIrqStatus ) & NVREG_IRQSTAT_MASK; + /* Return when no interrupts have been triggered */ + if ( ! status ) + return; + /* Clear interrupts */ writel ( NVREG_IRQSTAT_MASK, ioaddr + NvRegIrqStatus ); @@ -1000,10 +1004,6 @@ forcedeth_poll ( struct net_device *netdev ) if ( ( status & NVREG_IRQ_LINK ) || ! ( netdev_link_ok ( netdev ) ) ) forcedeth_link_status ( netdev ); - /* Return when no interrupts have been triggered */ - if ( ! status ) - return; - /* Process transmitted packets */ nv_process_tx_packets ( netdev ); |