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authorOlof Johansson <olof@lixom.net>2015-04-20 10:59:04 -0400
committerOlof Johansson <olof@lixom.net>2015-04-20 10:59:04 -0400
commitcdaa8cf34863028dab238e1498555bf12d693244 (patch)
tree0034305d152c3c4887b81c8983d0f298e6e3f6cb /drivers/net/ethernet/altera/altera_tse_main.c
parent30a5c1894a4c932f5a417f0a6ec369c7da81204b (diff)
parent98b80987c940956da48f0c703f60340128bb8521 (diff)
Merge branch 'fixes' into next/fixes-non-critical
Merge a set of fixes that we missed sending in before v4.0 release. These will also be sent to -stable. * fixes: (659 commits) ARM: at91/dt: sama5d3 xplained: add phy address for macb1 kbuild: Create directory for target DTB ARM: mvebu: Disable CPU Idle on Armada 38x arm64: juno: Fix misleading name of UART reference clock ARM: dts: sunxi: Remove overclocked/overvoltaged OPP ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting ARM: socfpga: dts: fix spi1 interrupt ARM: dts: Fix gpio interrupts for dm816x ARM: dts: dra7: remove ti,hwmod property from pcie phy ARM: EXYNOS: Fix build breakage cpuidle on !SMP ARM: OMAP: dmtimer: disable pm runtime on remove ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure ARM: dts: fix lid and power pin-functions for exynos5250-spring ARM: dts: fix mmc node updates for exynos5250-spring ARM: OMAP2+: Fix socbus family info for AM33xx devices ARM: dts: omap3: Add missing dmas for crypto + Linux 4.0-rc4 Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/net/ethernet/altera/altera_tse_main.c')
-rw-r--r--drivers/net/ethernet/altera/altera_tse_main.c47
1 files changed, 23 insertions, 24 deletions
diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 760c72c6e2ac..6725dc00750b 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -376,7 +376,8 @@ static int tse_rx(struct altera_tse_private *priv, int limit)
376 u16 pktlength; 376 u16 pktlength;
377 u16 pktstatus; 377 u16 pktstatus;
378 378
379 while ((rxstatus = priv->dmaops->get_rx_status(priv)) != 0) { 379 while (((rxstatus = priv->dmaops->get_rx_status(priv)) != 0) &&
380 (count < limit)) {
380 pktstatus = rxstatus >> 16; 381 pktstatus = rxstatus >> 16;
381 pktlength = rxstatus & 0xffff; 382 pktlength = rxstatus & 0xffff;
382 383
@@ -491,28 +492,27 @@ static int tse_poll(struct napi_struct *napi, int budget)
491 struct altera_tse_private *priv = 492 struct altera_tse_private *priv =
492 container_of(napi, struct altera_tse_private, napi); 493 container_of(napi, struct altera_tse_private, napi);
493 int rxcomplete = 0; 494 int rxcomplete = 0;
494 int txcomplete = 0;
495 unsigned long int flags; 495 unsigned long int flags;
496 496
497 txcomplete = tse_tx_complete(priv); 497 tse_tx_complete(priv);
498 498
499 rxcomplete = tse_rx(priv, budget); 499 rxcomplete = tse_rx(priv, budget);
500 500
501 if (rxcomplete >= budget || txcomplete > 0) 501 if (rxcomplete < budget) {
502 return rxcomplete;
503 502
504 napi_gro_flush(napi, false); 503 napi_gro_flush(napi, false);
505 __napi_complete(napi); 504 __napi_complete(napi);
506 505
507 netdev_dbg(priv->dev, 506 netdev_dbg(priv->dev,
508 "NAPI Complete, did %d packets with budget %d\n", 507 "NAPI Complete, did %d packets with budget %d\n",
509 txcomplete+rxcomplete, budget); 508 rxcomplete, budget);
510 509
511 spin_lock_irqsave(&priv->rxdma_irq_lock, flags); 510 spin_lock_irqsave(&priv->rxdma_irq_lock, flags);
512 priv->dmaops->enable_rxirq(priv); 511 priv->dmaops->enable_rxirq(priv);
513 priv->dmaops->enable_txirq(priv); 512 priv->dmaops->enable_txirq(priv);
514 spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); 513 spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags);
515 return rxcomplete + txcomplete; 514 }
515 return rxcomplete;
516} 516}
517 517
518/* DMA TX & RX FIFO interrupt routing 518/* DMA TX & RX FIFO interrupt routing
@@ -521,7 +521,6 @@ static irqreturn_t altera_isr(int irq, void *dev_id)
521{ 521{
522 struct net_device *dev = dev_id; 522 struct net_device *dev = dev_id;
523 struct altera_tse_private *priv; 523 struct altera_tse_private *priv;
524 unsigned long int flags;
525 524
526 if (unlikely(!dev)) { 525 if (unlikely(!dev)) {
527 pr_err("%s: invalid dev pointer\n", __func__); 526 pr_err("%s: invalid dev pointer\n", __func__);
@@ -529,20 +528,20 @@ static irqreturn_t altera_isr(int irq, void *dev_id)
529 } 528 }
530 priv = netdev_priv(dev); 529 priv = netdev_priv(dev);
531 530
532 /* turn off desc irqs and enable napi rx */ 531 spin_lock(&priv->rxdma_irq_lock);
533 spin_lock_irqsave(&priv->rxdma_irq_lock, flags); 532 /* reset IRQs */
533 priv->dmaops->clear_rxirq(priv);
534 priv->dmaops->clear_txirq(priv);
535 spin_unlock(&priv->rxdma_irq_lock);
534 536
535 if (likely(napi_schedule_prep(&priv->napi))) { 537 if (likely(napi_schedule_prep(&priv->napi))) {
538 spin_lock(&priv->rxdma_irq_lock);
536 priv->dmaops->disable_rxirq(priv); 539 priv->dmaops->disable_rxirq(priv);
537 priv->dmaops->disable_txirq(priv); 540 priv->dmaops->disable_txirq(priv);
541 spin_unlock(&priv->rxdma_irq_lock);
538 __napi_schedule(&priv->napi); 542 __napi_schedule(&priv->napi);
539 } 543 }
540 544
541 /* reset IRQs */
542 priv->dmaops->clear_rxirq(priv);
543 priv->dmaops->clear_txirq(priv);
544
545 spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags);
546 545
547 return IRQ_HANDLED; 546 return IRQ_HANDLED;
548} 547}
@@ -1399,7 +1398,7 @@ static int altera_tse_probe(struct platform_device *pdev)
1399 } 1398 }
1400 1399
1401 if (of_property_read_u32(pdev->dev.of_node, "tx-fifo-depth", 1400 if (of_property_read_u32(pdev->dev.of_node, "tx-fifo-depth",
1402 &priv->rx_fifo_depth)) { 1401 &priv->tx_fifo_depth)) {
1403 dev_err(&pdev->dev, "cannot obtain tx-fifo-depth\n"); 1402 dev_err(&pdev->dev, "cannot obtain tx-fifo-depth\n");
1404 ret = -ENXIO; 1403 ret = -ENXIO;
1405 goto err_free_netdev; 1404 goto err_free_netdev;