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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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02e0e5e935
Clean-up some warnings from missing return code checks, mostly from calling pci_enable_device during a PCI resume. Signed-off-by: John W. Linville <linville@tuxdriver.com>
110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/* orinoco_pci.h
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*
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* Common code for all Orinoco drivers for PCI devices, including
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* both native PCI and PCMCIA-to-PCI bridges.
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*
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* Copyright (C) 2005, Pavel Roskin.
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* See orinoco.c for license.
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*/
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#ifndef _ORINOCO_PCI_H
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#define _ORINOCO_PCI_H
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#include <linux/netdevice.h>
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/* Driver specific data */
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struct orinoco_pci_card {
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void __iomem *bridge_io;
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void __iomem *attr_io;
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};
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#ifdef CONFIG_PM
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static int orinoco_pci_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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struct orinoco_private *priv = netdev_priv(dev);
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unsigned long flags;
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int err;
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err = orinoco_lock(priv, &flags);
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if (err) {
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printk(KERN_ERR "%s: cannot lock hardware for suspend\n",
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dev->name);
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return err;
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}
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err = __orinoco_down(dev);
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if (err)
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printk(KERN_WARNING "%s: error %d bringing interface down "
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"for suspend\n", dev->name, err);
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netif_device_detach(dev);
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priv->hw_unavailable++;
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orinoco_unlock(priv, &flags);
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free_irq(pdev->irq, dev);
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pci_save_state(pdev);
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pci_disable_device(pdev);
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pci_set_power_state(pdev, PCI_D3hot);
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return 0;
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}
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static int orinoco_pci_resume(struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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struct orinoco_private *priv = netdev_priv(dev);
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unsigned long flags;
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int err;
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pci_set_power_state(pdev, 0);
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err = pci_enable_device(pdev);
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if (err) {
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printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
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dev->name);
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return err;
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}
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pci_restore_state(pdev);
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err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
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dev->name, dev);
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if (err) {
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printk(KERN_ERR "%s: cannot re-allocate IRQ on resume\n",
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dev->name);
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pci_disable_device(pdev);
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return -EBUSY;
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}
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err = orinoco_reinit_firmware(dev);
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if (err) {
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printk(KERN_ERR "%s: error %d re-initializing firmware "
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"on resume\n", dev->name, err);
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return err;
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}
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spin_lock_irqsave(&priv->lock, flags);
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netif_device_attach(dev);
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priv->hw_unavailable--;
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if (priv->open && (! priv->hw_unavailable)) {
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err = __orinoco_up(dev);
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if (err)
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printk(KERN_ERR "%s: Error %d restarting card on resume\n",
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dev->name, err);
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}
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spin_unlock_irqrestore(&priv->lock, flags);
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return 0;
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}
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#else
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#define orinoco_pci_suspend NULL
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#define orinoco_pci_resume NULL
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#endif
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#endif /* _ORINOCO_PCI_H */
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