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 fef159a..92a8469 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -117,6 +117,21 @@
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_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 64aacae..5096562 100644
--- a/include/linux/aer.h
+++ b/include/linux/aer.h
@@ -13,11 +13,13 @@
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_