diff options
| author | Oza Pawandeep <poza@codeaurora.org> | 2018-07-20 01:58:09 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-07-20 23:27:11 +0300 |
| commit | ec752f5d54d723af3df03959637f963079643cd8 (patch) | |
| tree | 0971a3766e29d77ff89e963b551d429cb7c6f0ef /drivers/pci | |
| parent | 43ec03a9e5f382ff70fdef35b4ea813263cd8270 (diff) | |
| download | linux-ec752f5d54d723af3df03959637f963079643cd8.tar.xz | |
PCI/AER: Clear device status bits during ERR_FATAL and ERR_NONFATAL
Clear the device status bits while handling both ERR_FATAL and ERR_NONFATAL
cases.
Signed-off-by: Oza Pawandeep <poza@codeaurora.org>
[bhelgaas: rename to pci_aer_clear_device_status(), declare internal to PCI
core instead of exposing it everywhere]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.h | 2 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer.c | 15 | ||||
| -rw-r--r-- | drivers/pci/pcie/err.c | 2 |
3 files changed, 13 insertions, 6 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 107c64892b66..138a2b66f620 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -486,11 +486,13 @@ void pci_aer_init(struct pci_dev *dev); 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); #else static inline void pci_no_aer(void) { } static inline int pci_aer_init(struct pci_dev *d) { return -ENODEV; } 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) { } #endif #endif /* DRIVERS_PCI_H */ diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 4411ada4a91c..2a40b24ae4e3 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -382,6 +382,14 @@ int pci_disable_pcie_error_reporting(struct pci_dev *dev) } EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting); +void pci_aer_clear_device_status(struct pci_dev *dev) +{ + u16 sta; + + pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &sta); + pcie_capability_write_word(dev, PCI_EXP_DEVSTA, sta); +} + int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) { int pos; @@ -1532,12 +1540,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) */ static void aer_error_resume(struct pci_dev *dev) { - u16 reg16; - - /* Clean up Root device status */ - pcie_capability_read_word(dev, PCI_EXP_DEVSTA, ®16); - pcie_capability_write_word(dev, PCI_EXP_DEVSTA, reg16); - + pci_aer_clear_device_status(dev); pci_cleanup_aer_uncorrect_error_status(dev); } diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c index 638eda5c1d79..fdbcc555860d 100644 --- a/drivers/pci/pcie/err.c +++ b/drivers/pci/pcie/err.c @@ -252,6 +252,7 @@ static pci_ers_result_t broadcast_error_message(struct pci_dev *dev, dev->error_state = state; pci_walk_bus(dev->subordinate, cb, &result_data); if (cb == report_resume) { + pci_aer_clear_device_status(dev); pci_cleanup_aer_uncorrect_error_status(dev); dev->error_state = pci_channel_io_normal; } @@ -312,6 +313,7 @@ void pcie_do_fatal_recovery(struct pci_dev *dev, u32 service) * of the bridge and clear the error status of the bridge. */ pci_aer_clear_fatal_status(dev); + pci_aer_clear_device_status(dev); } if (result == PCI_ERS_RESULT_RECOVERED) { |