Move MSI processing to probe/remove processing. Currently, in case this driver is integrated as module, and when this module is re-installed, no interrupts is to be occurred. For the above issue, move MSI processing to open/release processing.
Signed-off-by: Tomoya MORINAGA <[email protected]> --- drivers/net/can/pch_can.c | 29 ++++++++++++++--------------- 1 files changed, 14 insertions(+), 15 deletions(-) diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c index df14569..c612a99 100644 --- a/drivers/net/can/pch_can.c +++ b/drivers/net/can/pch_can.c @@ -859,15 +859,6 @@ static int pch_can_open(struct net_device *ndev) struct pch_can_priv *priv = netdev_priv(ndev); int retval; - retval = pci_enable_msi(priv->dev); - if (retval) { - netdev_err(ndev, "PCH CAN opened without MSI\n"); - priv->use_msi = 0; - } else { - netdev_err(ndev, "PCH CAN opened with MSI\n"); - priv->use_msi = 1; - } - /* Regstering the interrupt. */ retval = request_irq(priv->dev->irq, pch_can_interrupt, IRQF_SHARED, ndev->name, ndev); @@ -893,9 +884,6 @@ static int pch_can_open(struct net_device *ndev) err_open_candev: free_irq(priv->dev->irq, ndev); req_irq_err: - if (priv->use_msi) - pci_disable_msi(priv->dev); - pch_can_release(priv); return retval; @@ -909,8 +897,6 @@ static int pch_close(struct net_device *ndev) napi_disable(&priv->napi); pch_can_release(priv); free_irq(priv->dev->irq, ndev); - if (priv->use_msi) - pci_disable_msi(priv->dev); close_candev(ndev); priv->can.state = CAN_STATE_STOPPED; return 0; @@ -993,12 +979,14 @@ static void __devexit pch_can_remove(struct pci_dev *pdev) struct pch_can_priv *priv = netdev_priv(ndev); unregister_candev(priv->ndev); - free_candev(priv->ndev); pci_iounmap(pdev, priv->regs); + if (priv->use_msi) + pci_disable_msi(priv->dev); pci_release_regions(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); pch_can_reset(priv); + free_candev(priv->ndev); } #ifdef CONFIG_PM @@ -1255,6 +1243,15 @@ static int __devinit pch_can_probe(struct pci_dev *pdev, netif_napi_add(ndev, &priv->napi, pch_can_poll, PCH_RX_OBJ_END); + rc = pci_enable_msi(priv->dev); + if (rc) { + netdev_err(ndev, "PCH CAN opened without MSI\n"); + priv->use_msi = 0; + } else { + netdev_err(ndev, "PCH CAN opened with MSI\n"); + priv->use_msi = 1; + } + rc = register_candev(ndev); if (rc) { dev_err(&pdev->dev, "Failed register_candev %d\n", rc); @@ -1264,6 +1261,8 @@ static int __devinit pch_can_probe(struct pci_dev *pdev, return 0; probe_exit_reg_candev: + if (priv->use_msi) + pci_disable_msi(priv->dev); free_candev(ndev); probe_exit_alloc_candev: pci_iounmap(pdev, addr); -- 1.6.0.6 _______________________________________________ Socketcan-core mailing list [email protected] https://lists.berlios.de/mailman/listinfo/socketcan-core
