From 081d0fe0ef60c258b67428a8fdf2d14f8ce392ef Mon Sep 17 00:00:00 2001 From: Betty Dall Date: Thu, 6 Jun 2013 12:10:51 -0600 Subject: PCI/AER: Reset link for devices below Root Port or Downstream Port When a PCIe device reports a fatal error, we reset the link leading to it. Previously we only did this for devices below Downstream Ports, not for devices directly below Root Ports. This patch changes that so we reset the link leading to devices below Root Ports just like we do for those below Downstream Ports. [bhelgaas: changelog, keep dev_printk(KERN_DEBUG)] Signed-off-by: Betty Dall Signed-off-by: Bjorn Helgaas --- drivers/pci/pcie/aer/aerdrv_core.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'drivers/pci/pcie/aer/aerdrv_core.c') diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 8ec8b4f48560..d9e776e69fe8 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -400,16 +400,16 @@ void aer_do_secondary_bus_reset(struct pci_dev *dev) } /** - * default_downstream_reset_link - default reset function for Downstream Port - * @dev: pointer to downstream port's pci_dev data structure + * default_reset_link - default reset function + * @dev: pointer to pci_dev data structure * - * Invoked when performing link reset at Downstream Port w/ no aer driver. + * Invoked when performing link reset on a Downstream Port or a + * Root Port with no aer driver. */ -static pci_ers_result_t default_downstream_reset_link(struct pci_dev *dev) +static pci_ers_result_t default_reset_link(struct pci_dev *dev) { aer_do_secondary_bus_reset(dev); - dev_printk(KERN_DEBUG, &dev->dev, - "Downstream Port link has been reset\n"); + dev_printk(KERN_DEBUG, &dev->dev, "downstream link has been reset\n"); return PCI_ERS_RESULT_RECOVERED; } @@ -458,8 +458,9 @@ static pci_ers_result_t reset_link(struct pci_dev *dev) if (driver && driver->reset_link) { status = driver->reset_link(udev); - } else if (pci_pcie_type(udev) == PCI_EXP_TYPE_DOWNSTREAM) { - status = default_downstream_reset_link(udev); + } else if (pci_pcie_type(udev) == PCI_EXP_TYPE_DOWNSTREAM || + pci_pcie_type(udev) == PCI_EXP_TYPE_ROOT_PORT) { + status = default_reset_link(udev); } else { dev_printk(KERN_DEBUG, &dev->dev, "no link-reset support at upstream device %s\n", -- cgit