static int sa1100_irda_stop(struct net_device *dev)
{
struct sa1100_irda *si = dev->priv;
disable_irq(dev->irq);
sa1100_irda_shutdown(si);
/*
* If we have been doing DMA receive, make sure we
* tidy that up cleanly.
*/
if (si->rxskb) {
pci_unmap_single(NULL, si->rxbuf_dma, HPSIR_MAX_RXLEN,
PCI_DMA_FROMDEVICE);
dev_kfree_skb(si->rxskb);
si->rxskb = NULL;
}
/* Stop IrLAP */
if (si->irlap) {
irlap_close(si->irlap);
si->irlap = NULL;
}
netif_stop_queue(dev);
si->open = 0;
/*
* Free resources
*/
sa1100_free_dma(si->txdma);
sa1100_free_dma(si->rxdma);
free_irq(dev->irq, dev);
sa1100_set_power(si, 0);
MOD_DEC_USE_COUNT;
return 0;
}
static int sa1100_irda_start(struct net_device *dev)
{
struct sa1100_irda *si = dev->priv;
int err;
si->speed = 9600;
err = request_irq(dev->irq, sa1100_irda_irq, 0, dev->name, dev);
if (err)
goto err_irq;
err = sa1100_request_dma(DMA_Ser2HSSPRd, "IrDA receive",
NULL, NULL, &si->rxdma);
if (err)
goto err_rx_dma;
err = sa1100_request_dma(DMA_Ser2HSSPWr, "IrDA transmit",
sa1100_irda_txdma_irq, dev, &si->txdma);
if (err)
goto err_tx_dma;
/*
* The interrupt must remain disabled for now.
*/
disable_irq(dev->irq);
/*
* Setup the serial port for the specified speed.
*/
err = sa1100_irda_startup(si);
if (err)
goto err_startup;
/*
* Open a new IrLAP layer instance.
*/
si->irlap = irlap_open(dev, &si->qos, "sa1100");
err = -ENOMEM;
if (!si->irlap)
goto err_irlap;
/*
* Now enable the interrupt and start the queue
*/
si->open = 1;
sa1100_set_power(si, power_level); /* low power mode */
enable_irq(dev->irq);
netif_start_queue(dev);
return 0;
err_irlap:
si->open = 0;
sa1100_irda_shutdown(si);
err_startup:
sa1100_free_dma(si->txdma);
err_tx_dma:
sa1100_free_dma(si->rxdma);
err_rx_dma:
free_irq(dev->irq, dev);
err_irq:
return err;
}
