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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>
This commit is contained in:
Stephen Hemminger 2007-06-06 11:50:34 +08:00 committed by Greg Kroah-Hartman
parent 65b3bc358a
commit f0dce41193
2 changed files with 18 additions and 0 deletions
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16
drivers/pci/pcie/aer/aerdrv_core.c
View File

@ -117,6 +117,21 @@ int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
return 0;
}
int pci_cleanup_aer_correct_error_status(struct pci_dev *dev)
{
int pos;
u32 status;
pos = pci_find_aer_capability(dev);
if (!pos)
return -EIO;
pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, status);
return 0;
}
static int find_device_iter(struct device *device, void *data)
{
struct pci_dev *dev;
@ -741,4 +756,5 @@ EXPORT_SYMBOL_GPL(pci_find_aer_capability);
EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
EXPORT_SYMBOL_GPL(pci_cleanup_aer_correct_error_status);

2
include/linux/aer.h
View File

@ -13,11 +13,13 @@ extern int pci_enable_pcie_error_reporting(struct pci_dev *dev);
extern int pci_find_aer_capability(struct pci_dev *dev);
extern int pci_disable_pcie_error_reporting(struct pci_dev *dev);
extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
extern int pci_cleanup_aer_correct_error_status(struct pci_dev *dev);
#else
#define pci_enable_pcie_error_reporting(dev) (-EINVAL)
#define pci_find_aer_capability(dev) (0)
#define pci_disable_pcie_error_reporting(dev) (-EINVAL)
#define pci_cleanup_aer_uncorrect_error_status(dev) (-EINVAL)
#define pci_cleanup_aer_correct_error_status(dev) (-EINVAL)
#endif
#endif //_AER_H_