From: Daniel Ritz - support PCI PM CAP version 3 (as defined in PCI PM Interface Spec v1.2) - pci/probe.c sets the PM state initially to 4 which is D3cold. add a PCI_UNKNOWN - minor cleanups Signed-off-by: Daniel Ritz Cc: Greg KH Signed-off-by: Andrew Morton --- drivers/pci/pci.c | 12 +++++------- drivers/pci/probe.c | 2 +- include/linux/pci.h | 1 + 3 files changed, 7 insertions(+), 8 deletions(-) diff -puN drivers/pci/pci.c~pci-pm-support-pm-cap-version-3 drivers/pci/pci.c --- 25/drivers/pci/pci.c~pci-pm-support-pm-cap-version-3 Wed Aug 17 15:32:07 2005 +++ 25-akpm/drivers/pci/pci.c Wed Aug 17 15:32:07 2005 @@ -294,7 +294,7 @@ pci_set_power_state(struct pci_dev *dev, return -EIO; pci_read_config_word(dev,pm + PCI_PM_PMC,&pmc); - if ((pmc & PCI_PM_CAP_VER_MASK) > 2) { + if ((pmc & PCI_PM_CAP_VER_MASK) > 3) { printk(KERN_DEBUG "PCI: %s has unsupported PM cap regs version (%u)\n", pci_name(dev), pmc & PCI_PM_CAP_VER_MASK); @@ -302,12 +302,10 @@ pci_set_power_state(struct pci_dev *dev, } /* check if this device supports the desired state */ - if (state == PCI_D1 || state == PCI_D2) { - if (state == PCI_D1 && !(pmc & PCI_PM_CAP_D1)) - return -EIO; - else if (state == PCI_D2 && !(pmc & PCI_PM_CAP_D2)) - return -EIO; - } + if (state == PCI_D1 && !(pmc & PCI_PM_CAP_D1)) + return -EIO; + else if (state == PCI_D2 && !(pmc & PCI_PM_CAP_D2)) + return -EIO; pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr); diff -puN drivers/pci/probe.c~pci-pm-support-pm-cap-version-3 drivers/pci/probe.c --- 25/drivers/pci/probe.c~pci-pm-support-pm-cap-version-3 Wed Aug 17 15:32:07 2005 +++ 25-akpm/drivers/pci/probe.c Wed Aug 17 15:32:07 2005 @@ -584,7 +584,7 @@ static int pci_setup_device(struct pci_d dev->vendor, dev->device, class, dev->hdr_type); /* "Unknown power state" */ - dev->current_state = 4; + dev->current_state = PCI_UNKNOWN; /* Early fixups, before probing the BARs */ pci_fixup_device(pci_fixup_early, dev); diff -puN include/linux/pci.h~pci-pm-support-pm-cap-version-3 include/linux/pci.h --- 25/include/linux/pci.h~pci-pm-support-pm-cap-version-3 Wed Aug 17 15:32:07 2005 +++ 25-akpm/include/linux/pci.h Wed Aug 17 15:32:07 2005 @@ -75,6 +75,7 @@ typedef int __bitwise pci_power_t; #define PCI_D2 ((pci_power_t __force) 2) #define PCI_D3hot ((pci_power_t __force) 3) #define PCI_D3cold ((pci_power_t __force) 4) +#define PCI_UNKNOWN ((pci_power_t __force) 5) #define PCI_POWER_ERROR ((pci_power_t __force) -1) /* _