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Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: [PATCH] PCI: reverse pci config space restore order [PATCH] PCI: Improve PCI config space writeback [PATCH] PCI: Error handling on PCI device resume [PATCH] PCI: fix pciehp compile issue when CONFIG_ACPI is not enabled
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commit
dc4967e756
3 changed files with 25 additions and 8 deletions
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@ -285,9 +285,9 @@ static int pci_device_suspend(struct device * dev, pm_message_t state)
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* Default resume method for devices that have no driver provided resume,
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* or not even a driver at all.
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*/
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static void pci_default_resume(struct pci_dev *pci_dev)
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static int pci_default_resume(struct pci_dev *pci_dev)
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{
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int retval;
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int retval = 0;
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/* restore the PCI config space */
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pci_restore_state(pci_dev);
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@ -297,18 +297,21 @@ static void pci_default_resume(struct pci_dev *pci_dev)
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/* if the device was busmaster before the suspend, make it busmaster again */
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if (pci_dev->is_busmaster)
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pci_set_master(pci_dev);
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return retval;
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}
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static int pci_device_resume(struct device * dev)
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{
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int error;
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struct pci_dev * pci_dev = to_pci_dev(dev);
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struct pci_driver * drv = pci_dev->driver;
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if (drv && drv->resume)
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drv->resume(pci_dev);
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error = drv->resume(pci_dev);
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else
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pci_default_resume(pci_dev);
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return 0;
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error = pci_default_resume(pci_dev);
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return error;
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}
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static void pci_device_shutdown(struct device *dev)
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@ -461,9 +461,23 @@ int
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pci_restore_state(struct pci_dev *dev)
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{
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int i;
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int val;
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for (i = 0; i < 16; i++)
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pci_write_config_dword(dev,i * 4, dev->saved_config_space[i]);
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/*
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* The Base Address register should be programmed before the command
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* register(s)
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*/
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for (i = 15; i >= 0; i--) {
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pci_read_config_dword(dev, i * 4, &val);
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if (val != dev->saved_config_space[i]) {
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printk(KERN_DEBUG "PM: Writing back config space on "
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"device %s at offset %x (was %x, writing %x)\n",
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pci_name(dev), i,
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val, (int)dev->saved_config_space[i]);
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pci_write_config_dword(dev,i * 4,
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dev->saved_config_space[i]);
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}
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}
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pci_restore_msi_state(dev);
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pci_restore_msix_state(dev);
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return 0;
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@ -50,7 +50,7 @@
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extern acpi_status pci_osc_control_set(acpi_handle handle, u32 flags);
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extern acpi_status pci_osc_support_set(u32 flags);
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#else
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#if !defined(acpi_status)
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#if !defined(AE_ERROR)
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typedef u32 acpi_status;
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#define AE_ERROR (acpi_status) (0x0001)
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#endif
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