aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/natsemi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/natsemi.c')
-rw-r--r--drivers/net/natsemi.c18
1 files changed, 2 insertions, 16 deletions
diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c
index c329a4f5840c..0a3e60418e53 100644
--- a/drivers/net/natsemi.c
+++ b/drivers/net/natsemi.c
@@ -203,22 +203,8 @@ skbuff at an offset of "+2", 16-byte aligning the IP header.
203IIId. Synchronization 203IIId. Synchronization
204 204
205Most operations are synchronized on the np->lock irq spinlock, except the 205Most operations are synchronized on the np->lock irq spinlock, except the
206performance critical codepaths: 206recieve and transmit paths which are synchronised using a combination of
207 207hardware descriptor ownership, disabling interrupts and NAPI poll scheduling.
208The rx process only runs in the interrupt handler. Access from outside
209the interrupt handler is only permitted after disable_irq().
210
211The rx process usually runs under the netif_tx_lock. If np->intr_tx_reap
212is set, then access is permitted under spin_lock_irq(&np->lock).
213
214Thus configuration functions that want to access everything must call
215 disable_irq(dev->irq);
216 netif_tx_lock_bh(dev);
217 spin_lock_irq(&np->lock);
218
219IV. Notes
220
221NatSemi PCI network controllers are very uncommon.
222 208
223IVb. References 209IVb. References
224 210