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PCI aer: add pci_cleanup_aer_correct_aer_status
Function to clear bogus correctable errors. Analog to pci_aer_uncorrect_are_status. The Marvell chips seem to start out with a bogus value that needs to be cleared. Yanmin ported it to 2.6.22-rc4 by fixing a fuzz patch applying info. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Acked-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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2 changed files with 18 additions and 0 deletions
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@ -117,6 +117,21 @@ int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
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return 0;
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return 0;
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}
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}
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int pci_cleanup_aer_correct_error_status(struct pci_dev *dev)
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{
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int pos;
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u32 status;
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pos = pci_find_aer_capability(dev);
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if (!pos)
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return -EIO;
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pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
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pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, status);
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return 0;
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}
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static int find_device_iter(struct device *device, void *data)
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static int find_device_iter(struct device *device, void *data)
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{
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{
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struct pci_dev *dev;
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struct pci_dev *dev;
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@ -741,4 +756,5 @@ EXPORT_SYMBOL_GPL(pci_find_aer_capability);
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EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
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EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
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EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
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EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
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EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
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EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
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EXPORT_SYMBOL_GPL(pci_cleanup_aer_correct_error_status);
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@ -13,11 +13,13 @@ extern int pci_enable_pcie_error_reporting(struct pci_dev *dev);
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extern int pci_find_aer_capability(struct pci_dev *dev);
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extern int pci_find_aer_capability(struct pci_dev *dev);
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extern int pci_disable_pcie_error_reporting(struct pci_dev *dev);
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extern int pci_disable_pcie_error_reporting(struct pci_dev *dev);
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extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
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extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
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extern int pci_cleanup_aer_correct_error_status(struct pci_dev *dev);
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#else
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#else
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#define pci_enable_pcie_error_reporting(dev) (-EINVAL)
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#define pci_enable_pcie_error_reporting(dev) (-EINVAL)
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#define pci_find_aer_capability(dev) (0)
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#define pci_find_aer_capability(dev) (0)
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#define pci_disable_pcie_error_reporting(dev) (-EINVAL)
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#define pci_disable_pcie_error_reporting(dev) (-EINVAL)
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#define pci_cleanup_aer_uncorrect_error_status(dev) (-EINVAL)
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#define pci_cleanup_aer_uncorrect_error_status(dev) (-EINVAL)
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#define pci_cleanup_aer_correct_error_status(dev) (-EINVAL)
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#endif
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#endif
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#endif //_AER_H_
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#endif //_AER_H_
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