aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/arm/ks8695net.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/arm/ks8695net.c')
-rw-r--r--drivers/net/arm/ks8695net.c24
1 files changed, 9 insertions, 15 deletions
diff --git a/drivers/net/arm/ks8695net.c b/drivers/net/arm/ks8695net.c
index a1d4188c430b..e7810b74f396 100644
--- a/drivers/net/arm/ks8695net.c
+++ b/drivers/net/arm/ks8695net.c
@@ -449,11 +449,10 @@ ks8695_rx_irq(int irq, void *dev_id)
449} 449}
450 450
451/** 451/**
452 * ks8695_rx - Receive packets called by NAPI poll method 452 * ks8695_rx - Receive packets called by NAPI poll method
453 * @ksp: Private data for the KS8695 Ethernet 453 * @ksp: Private data for the KS8695 Ethernet
454 * @budget: The max packets would be receive 454 * @budget: Number of packets allowed to process
455 */ 455 */
456
457static int ks8695_rx(struct ks8695_priv *ksp, int budget) 456static int ks8695_rx(struct ks8695_priv *ksp, int budget)
458{ 457{
459 struct net_device *ndev = ksp->ndev; 458 struct net_device *ndev = ksp->ndev;
@@ -461,7 +460,6 @@ static int ks8695_rx(struct ks8695_priv *ksp, int budget)
461 int buff_n; 460 int buff_n;
462 u32 flags; 461 u32 flags;
463 int pktlen; 462 int pktlen;
464 int last_rx_processed = -1;
465 int received = 0; 463 int received = 0;
466 464
467 buff_n = ksp->next_rx_desc_read; 465 buff_n = ksp->next_rx_desc_read;
@@ -471,6 +469,7 @@ static int ks8695_rx(struct ks8695_priv *ksp, int budget)
471 cpu_to_le32(RDES_OWN)))) { 469 cpu_to_le32(RDES_OWN)))) {
472 rmb(); 470 rmb();
473 flags = le32_to_cpu(ksp->rx_ring[buff_n].status); 471 flags = le32_to_cpu(ksp->rx_ring[buff_n].status);
472
474 /* Found an SKB which we own, this means we 473 /* Found an SKB which we own, this means we
475 * received a packet 474 * received a packet
476 */ 475 */
@@ -533,23 +532,18 @@ rx_failure:
533 ksp->rx_ring[buff_n].status = cpu_to_le32(RDES_OWN); 532 ksp->rx_ring[buff_n].status = cpu_to_le32(RDES_OWN);
534rx_finished: 533rx_finished:
535 received++; 534 received++;
536 /* And note this as processed so we can start
537 * from here next time
538 */
539 last_rx_processed = buff_n;
540 buff_n = (buff_n + 1) & MAX_RX_DESC_MASK; 535 buff_n = (buff_n + 1) & MAX_RX_DESC_MASK;
541 /*And note which RX descriptor we last did */
542 if (likely(last_rx_processed != -1))
543 ksp->next_rx_desc_read =
544 (last_rx_processed + 1) &
545 MAX_RX_DESC_MASK;
546 } 536 }
537
538 /* And note which RX descriptor we last did */
539 ksp->next_rx_desc_read = buff_n;
540
547 /* And refill the buffers */ 541 /* And refill the buffers */
548 ks8695_refill_rxbuffers(ksp); 542 ks8695_refill_rxbuffers(ksp);
549 543
550 /* Kick the RX DMA engine, in case it became 544 /* Kick the RX DMA engine, in case it became suspended */
551 * suspended */
552 ks8695_writereg(ksp, KS8695_DRSC, 0); 545 ks8695_writereg(ksp, KS8695_DRSC, 0);
546
553 return received; 547 return received;
554} 548}
555 549