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PCI/ERR: Rename pci_aer_clear_device_status() to pcie_clear_device_status() 

pci_aer_clear_device_status() clears the error bits in the PCIe Device
Status Register (PCI_EXP_DEVSTA).  Every PCIe device has this register,
regardless of whether it supports AER.

Rename pci_aer_clear_device_status() to pcie_clear_device_status() to make
clear that it is PCIe-specific but not AER-specific.  Move it to
drivers/pci/pci.c, again since it's not AER-specific.  No functional change
intended.

Link: https://lore.kernel.org/r/20200717195619.766662-1-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2020-07-16 17:34:30 -05:00
parent e83e2ca3c3
commit 600a5b4fc8
4 changed files with 11 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/pci/pci.c
View File

@ -2046,6 +2046,14 @@ int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
}
EXPORT_SYMBOL_GPL(pci_set_pcie_reset_state);
void pcie_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);
}
/**
* pcie_clear_root_pme_status - Clear root port PME interrupt status.
* @dev: PCIe root port or event collector.

3
drivers/pci/pci.h
View File

@ -92,6 +92,7 @@ void pci_refresh_power_state(struct pci_dev *dev);
int pci_power_up(struct pci_dev *dev);
void pci_disable_enabled_device(struct pci_dev *dev);
int pci_finish_runtime_suspend(struct pci_dev *dev);
void pcie_clear_device_status(struct pci_dev *dev);
void pcie_clear_root_pme_status(struct pci_dev *dev);
bool pci_check_pme_status(struct pci_dev *dev);
void pci_pme_wakeup_bus(struct pci_bus *bus);
@ -658,7 +659,6 @@ 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);
int pci_aer_clear_status(struct pci_dev *dev);
int pci_aer_raw_clear_status(struct pci_dev *dev);
#else
@ -666,7 +666,6 @@ 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_clear_status(struct pci_dev *dev) { return -EINVAL; }
static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
#endif

10
drivers/pci/pcie/aer.c
View File

@ -241,14 +241,6 @@ 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_aer_clear_nonfatal_status(struct pci_dev *dev)
{
int aer = dev->aer_cap;
@ -947,7 +939,7 @@ static void handle_error_source(struct pci_dev *dev, struct aer_err_info *info)
if (aer)
pci_write_config_dword(dev, aer + PCI_ERR_COR_STATUS,
info->status);
pci_aer_clear_device_status(dev);
pcie_clear_device_status(dev);
} else if (info->severity == AER_NONFATAL)
pcie_do_recovery(dev, pci_channel_io_normal, aer_root_reset);
else if (info->severity == AER_FATAL)

2
drivers/pci/pcie/err.c
View File

@ -197,7 +197,7 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
pci_dbg(dev, "broadcast resume message\n");
pci_walk_bus(bus, report_resume, &status);
pci_aer_clear_device_status(dev);
pcie_clear_device_status(dev);
pci_aer_clear_nonfatal_status(dev);
pci_info(dev, "device recovery successful\n");
return status;