diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.h | 2 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer.c | 22 |
2 files changed, 20 insertions, 4 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index e48677a0ba42..6d09bb22b73d 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -654,12 +654,14 @@ void pci_aer_exit(struct pci_dev *dev); extern const struct attribute_group aer_stats_attr_group; void pci_aer_clear_fatal_status(struct pci_dev *dev); void pci_aer_clear_device_status(struct pci_dev *dev); +int pci_aer_raw_clear_status(struct pci_dev *dev); #else static inline void pci_no_aer(void) { } static inline void pci_aer_init(struct pci_dev *d) { } static inline void pci_aer_exit(struct pci_dev *d) { } static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { } static inline void pci_aer_clear_device_status(struct pci_dev *dev) { } +static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; } #endif #ifdef CONFIG_ACPI diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index c0540c3761dc..bd9f122165e0 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -420,7 +420,16 @@ void pci_aer_clear_fatal_status(struct pci_dev *dev) pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status); } -int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) +/** + * pci_aer_raw_clear_status - Clear AER error registers. + * @dev: the PCI device + * + * Clearing AER error status registers unconditionally, regardless of + * whether they're owned by firmware or the OS. + * + * Returns 0 on success, or negative on failure. + */ +int pci_aer_raw_clear_status(struct pci_dev *dev) { int pos; u32 status; @@ -433,9 +442,6 @@ int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) if (!pos) return -EIO; - if (pcie_aer_get_firmware_first(dev)) - return -EIO; - port_type = pci_pcie_type(dev); if (port_type == PCI_EXP_TYPE_ROOT_PORT) { pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &status); @@ -451,6 +457,14 @@ int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) return 0; } +int pci_cleanup_aer_error_status_regs(struct pci_dev *dev) +{ + if (pcie_aer_get_firmware_first(dev)) + return -EIO; + + return pci_aer_raw_clear_status(dev); +} + void pci_save_aer_state(struct pci_dev *dev) { struct pci_cap_saved_state *save_state; |