diff options
| author | John Dykstra <john.dykstra1@gmail.com> | 2009-04-29 17:22:30 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-04-29 17:22:30 -0700 |
| commit | ce105a082371570effb71541f299b1dc2771ee03 (patch) | |
| tree | d352e8543adeb3392bb91ceb40301452f1aede0f | |
| parent | dd4d8ca6446538a904127838cb6c9a4cffe690f7 (diff) | |
pcnet32: Remove pointless memory barriers
These two memory barriers in performance-critical paths are not needed
on x86. Even if some other architecture does buffer PCI I/O space
writes, the existing memory-mapped I/O barriers are unlikely to be what
is needed.
Signed-off-by: John Dykstra <john.dykstra1@gmail.com>
Acked-by: Don Fry <pcnet32@verizon.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/pcnet32.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/pcnet32.c b/drivers/net/pcnet32.c index e5e8c59243b..1c35e1d637a 100644 --- a/drivers/net/pcnet32.c +++ b/drivers/net/pcnet32.c @@ -1405,7 +1405,7 @@ static int pcnet32_poll(struct napi_struct *napi, int budget) /* Set interrupt enable. */ lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN); - mmiowb(); + spin_unlock_irqrestore(&lp->lock, flags); } return work_done; @@ -2597,7 +2597,7 @@ pcnet32_interrupt(int irq, void *dev_id) val = lp->a.read_csr(ioaddr, CSR3); val |= 0x5f00; lp->a.write_csr(ioaddr, CSR3, val); - mmiowb(); + __napi_schedule(&lp->napi); break; } |