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PCI: Fix pci-e port driver slot_reset bad default return value

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When an upstream port reports an AER error to root port, kernel
starts error recovery procedures. The default return value of
function pcie_portdrv_slot_reset is PCI_ERS_RESULT_NONE. If all
port service drivers of the downstream port under the upstream
port have no slot_reset method in pci_error_handlers, AER recovery
would stop without resume. Below patch against 2.6.30-rc3 fixes it.

Signed-off-by: Zhang Yanmin <yanmin.zhang@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Zhang, Yanmin 2009-04-30 14:48:29 +08:00 committed by Jesse Barnes
parent f328ddc154
commit 029091df01
2 changed files with 4 additions and 1 deletions
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3
drivers/pci/pcie/aer/aerdrv.h
View file

@ -95,6 +95,9 @@ struct aer_broadcast_data {
static inline pci_ers_result_t merge_result(enum pci_ers_result orig,
enum pci_ers_result new)
{
if (new == PCI_ERS_RESULT_NONE)
return orig;
switch (orig) {
case PCI_ERS_RESULT_CAN_RECOVER:
case PCI_ERS_RESULT_RECOVERED:

2
drivers/pci/pcie/portdrv_pci.c
View file

@ -200,7 +200,7 @@ static int slot_reset_iter(struct device *device, void *data)
static pci_ers_result_t pcie_portdrv_slot_reset(struct pci_dev *dev)
{
pci_ers_result_t status = PCI_ERS_RESULT_NONE;
pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED;
int retval;
/* If fatal, restore cfg space for possible link reset at upstream */