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| author | Nicolas Pitre <nico@cam.org> | 2005-04-12 16:26:40 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-05-27 22:21:16 -0400 |
| commit | ea9375607f8b312cf4389d68909330ed32a622ef (patch) | |
| tree | 20a508ac2a259790095668450e47d7d2e935e891 /drivers/net/smc91x.c | |
| parent | 8de901150f3c58b019b2a3ce497d23ab662dbb8b (diff) | |
| download | kernel_samsung_smdk4412-ea9375607f8b312cf4389d68909330ed32a622ef.tar.gz kernel_samsung_smdk4412-ea9375607f8b312cf4389d68909330ed32a622ef.tar.bz2 kernel_samsung_smdk4412-ea9375607f8b312cf4389d68909330ed32a622ef.zip | |
[PATCH] smc91x: more tweaks to help with RX overruns
Signed-off-by: Nicolas Pitre <nico@cam.org>
Index: linux-2.6/drivers/net/smc91x.c
===================================================================
Diffstat (limited to 'drivers/net/smc91x.c')
| -rw-r--r-- | drivers/net/smc91x.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c index a6c0628fdb2..fd80048f7f7 100644 --- a/drivers/net/smc91x.c +++ b/drivers/net/smc91x.c @@ -129,7 +129,7 @@ MODULE_PARM_DESC(nowait, "set to 1 for no wait state"); /* * Transmit timeout, default 5 seconds. */ -static int watchdog = 5000; +static int watchdog = 1000; module_param(watchdog, int, 0400); MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); @@ -660,15 +660,14 @@ static void smc_hardware_send_pkt(unsigned long data) SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG); /* - * If THROTTLE_TX_PKTS is set, we look at the TX_EMPTY flag - * before queueing this packet for TX, and if it's clear then - * we stop the queue here. This will have the effect of - * having at most 2 packets queued for TX in the chip's memory - * at all time. If THROTTLE_TX_PKTS is not set then the queue - * is stopped only when memory allocation (MC_ALLOC) does not - * succeed right away. + * If THROTTLE_TX_PKTS is set, we stop the queue here. This will + * have the effect of having at most one packet queued for TX + * in the chip's memory at all time. + * + * If THROTTLE_TX_PKTS is not set then the queue is stopped only + * when memory allocation (MC_ALLOC) does not succeed right away. */ - if (THROTTLE_TX_PKTS && !(SMC_GET_INT() & IM_TX_EMPTY_INT)) + if (THROTTLE_TX_PKTS) netif_stop_queue(dev); /* queue the packet for TX */ @@ -1311,15 +1310,16 @@ static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs) if (!status) break; - if (status & IM_RCV_INT) { - DBG(3, "%s: RX irq\n", dev->name); - smc_rcv(dev); - } else if (status & IM_TX_INT) { + if (status & IM_TX_INT) { + /* do this before RX as it will free memory quickly */ DBG(3, "%s: TX int\n", dev->name); smc_tx(dev); SMC_ACK_INT(IM_TX_INT); if (THROTTLE_TX_PKTS) netif_wake_queue(dev); + } else if (status & IM_RCV_INT) { + DBG(3, "%s: RX irq\n", dev->name); + smc_rcv(dev); } else if (status & IM_ALLOC_INT) { DBG(3, "%s: Allocation irq\n", dev->name); tasklet_hi_schedule(&lp->tx_task); |