From: Stephen Hemminger <shemminger@linux-foundation.org> Date: Wed, 6 Jun 2007 03:50:34 +0000 (+0800) Subject: PCI aer: add pci_cleanup_aer_correct_aer_status X-Git-Tag: firefly_0821_release~28302^2~23 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f0dce411930d16a678173e534594bca160f5eaff;p=firefly-linux-kernel-4.4.55.git 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> --- diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index fef159a68081..92a8469b21ba 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -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); diff --git a/include/linux/aer.h b/include/linux/aer.h index 64aacaed8d6c..509656286e53 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -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_