aboutsummaryrefslogtreecommitdiff
path: root/drivers/pci/pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 0906599ebfd..315fea47e78 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -29,7 +29,17 @@ const char *pci_power_names[] = {
};
EXPORT_SYMBOL_GPL(pci_power_names);
-unsigned int pci_pm_d3_delay = PCI_PM_D3_WAIT;
+unsigned int pci_pm_d3_delay;
+
+static void pci_dev_d3_sleep(struct pci_dev *dev)
+{
+ unsigned int delay = dev->d3_delay;
+
+ if (delay < pci_pm_d3_delay)
+ delay = pci_pm_d3_delay;
+
+ msleep(delay);
+}
#ifdef CONFIG_PCI_DOMAINS
int pci_domains_supported = 1;
@@ -522,7 +532,7 @@ static int pci_raw_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(pci_pm_d3_delay);
+ pci_dev_d3_sleep(dev);
else if (state == PCI_D2 || dev->current_state == PCI_D2)
udelay(PCI_PM_D2_DELAY);
@@ -1409,6 +1419,7 @@ void pci_pm_init(struct pci_dev *dev)
}
dev->pm_cap = pm;
+ dev->d3_delay = PCI_PM_D3_WAIT;
dev->d1_support = false;
dev->d2_support = false;
@@ -2247,12 +2258,12 @@ static int pci_pm_reset(struct pci_dev *dev, int probe)
csr &= ~PCI_PM_CTRL_STATE_MASK;
csr |= PCI_D3hot;
pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr);
- msleep(pci_pm_d3_delay);
+ pci_dev_d3_sleep(dev);
csr &= ~PCI_PM_CTRL_STATE_MASK;
csr |= PCI_D0;
pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr);
- msleep(pci_pm_d3_delay);
+ pci_dev_d3_sleep(dev);
return 0;
}