diff options
Diffstat (limited to 'drivers/pci/pcie')
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_core.c | 51 | ||||
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 4 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 19 |
3 files changed, 46 insertions, 28 deletions
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index aac7006949f..38257500738 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -108,6 +108,37 @@ int pci_cleanup_aer_correct_error_status(struct pci_dev *dev) } #endif /* 0 */ + +static void set_device_error_reporting(struct pci_dev *dev, void *data) +{ + bool enable = *((bool *)data); + + if (dev->pcie_type != PCIE_RC_PORT && + dev->pcie_type != PCIE_SW_UPSTREAM_PORT && + dev->pcie_type != PCIE_SW_DOWNSTREAM_PORT) + return; + + if (enable) + pci_enable_pcie_error_reporting(dev); + else + pci_disable_pcie_error_reporting(dev); +} + +/** + * set_downstream_devices_error_reporting - enable/disable the error reporting bits on the root port and its downstream ports. + * @dev: pointer to root port's pci_dev data structure + * @enable: true = enable error reporting, false = disable error reporting. + */ +static void set_downstream_devices_error_reporting(struct pci_dev *dev, + bool enable) +{ + set_device_error_reporting(dev, &enable); + + if (!dev->subordinate) + return; + pci_walk_bus(dev->subordinate, set_device_error_reporting, &enable); +} + static int find_device_iter(struct device *device, void *data) { struct pci_dev *dev; @@ -525,15 +556,11 @@ void aer_enable_rootport(struct aer_rpc *rpc) pci_read_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, ®32); pci_write_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, reg32); - /* Enable Root Port device reporting error itself */ - pci_read_config_word(pdev, pos+PCI_EXP_DEVCTL, ®16); - reg16 = reg16 | - PCI_EXP_DEVCTL_CERE | - PCI_EXP_DEVCTL_NFERE | - PCI_EXP_DEVCTL_FERE | - PCI_EXP_DEVCTL_URRE; - pci_write_config_word(pdev, pos+PCI_EXP_DEVCTL, - reg16); + /* + * Enable error reporting for the root port device and downstream port + * devices. + */ + set_downstream_devices_error_reporting(pdev, true); /* Enable Root Port's interrupt in response to error messages */ pci_write_config_dword(pdev, @@ -553,6 +580,12 @@ static void disable_root_aer(struct aer_rpc *rpc) u32 reg32; int pos; + /* + * Disable error reporting for the root port device and downstream port + * devices. + */ + set_downstream_devices_error_reporting(pdev, false); + pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR); /* Disable Root's interrupt in response to error messages */ pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, 0); diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 586b6f75910..b0367f168af 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -718,9 +718,9 @@ void pcie_aspm_exit_link_state(struct pci_dev *pdev) /* * All PCIe functions are in one slot, remove one function will remove - * the the whole slot, so just wait + * the whole slot, so just wait until we are the last function left. */ - if (!list_empty(&parent->subordinate->devices)) + if (!list_is_last(&pdev->bus_list, &parent->subordinate->devices)) goto out; /* All functions are removed, so just disable ASPM for the link */ diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 99a914a027f..5ea566e20b3 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -55,25 +55,13 @@ static int pcie_portdrv_suspend(struct pci_dev *dev, pm_message_t state) } -static int pcie_portdrv_suspend_late(struct pci_dev *dev, pm_message_t state) -{ - return pci_save_state(dev); -} - -static int pcie_portdrv_resume_early(struct pci_dev *dev) -{ - return pci_restore_state(dev); -} - static int pcie_portdrv_resume(struct pci_dev *dev) { - pcie_portdrv_restore_config(dev); + pci_set_master(dev); return pcie_port_device_resume(dev); } #else #define pcie_portdrv_suspend NULL -#define pcie_portdrv_suspend_late NULL -#define pcie_portdrv_resume_early NULL #define pcie_portdrv_resume NULL #endif @@ -109,14 +97,13 @@ static int __devinit pcie_portdrv_probe (struct pci_dev *dev, pcie_portdrv_save_config(dev); - pci_enable_pcie_error_reporting(dev); - return 0; } static void pcie_portdrv_remove (struct pci_dev *dev) { pcie_port_device_remove(dev); + pci_disable_device(dev); kfree(pci_get_drvdata(dev)); } @@ -292,8 +279,6 @@ static struct pci_driver pcie_portdriver = { .remove = pcie_portdrv_remove, .suspend = pcie_portdrv_suspend, - .suspend_late = pcie_portdrv_suspend_late, - .resume_early = pcie_portdrv_resume_early, .resume = pcie_portdrv_resume, .err_handler = &pcie_portdrv_err_handler, |