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| author | Paul Mackerras <paulus@samba.org> | 2006-08-01 10:37:25 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-08-01 10:37:25 +1000 |
| commit | 57cad8084e0837e0f2c97da789ec9b3f36809be9 (patch) | |
| tree | e9c790afb4286f78cb08d9664f58baa7e876fe55 /drivers/pci/pci.c | |
| parent | cb18bd40030c879cd93fef02fd579f74dbab473d (diff) | |
| parent | 49b1e3ea19b1c95c2f012b8331ffb3b169e4c042 (diff) | |
| download | linux-57cad8084e0837e0f2c97da789ec9b3f36809be9.tar.gz linux-57cad8084e0837e0f2c97da789ec9b3f36809be9.tar.bz2 linux-57cad8084e0837e0f2c97da789ec9b3f36809be9.zip | |
Merge branch 'merge'
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index cf57d7de3765..9f79dd6d51ab 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -19,6 +19,7 @@ #include <asm/dma.h> /* isa_dma_bridge_buggy */ #include "pci.h" +unsigned int pci_pm_d3_delay = 10; /** * pci_bus_max_busnr - returns maximum PCI bus number of given bus' children @@ -313,6 +314,14 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) } else if (dev->current_state == state) return 0; /* we're already there */ + /* + * If the device or the parent bridge can't support PCI PM, ignore + * the request if we're doing anything besides putting it into D0 + * (which would only happen on boot). + */ + if ((state == PCI_D1 || state == PCI_D2) && pci_no_d1d2(dev)) + return 0; + /* find PCI PM capability in list */ pm = pci_find_capability(dev, PCI_CAP_ID_PM); @@ -363,7 +372,7 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) /* Mandatory power management transition delays */ /* see PCI PM 1.1 5.6.1 table 18 */ if (state == PCI_D3hot || dev->current_state == PCI_D3hot) - msleep(10); + msleep(pci_pm_d3_delay); else if (state == PCI_D2 || dev->current_state == PCI_D2) udelay(200); |