PCIe AER: reject aer inject if hardware mask error reporting

Commit Message

Youquan Song Dec. 11, 2009, 11:48 p.m. UTC

None

Patch

diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c
index ad77f0c..fa2bc22 100644
--- a/drivers/pci/pcie/aer/aer_inject.c
+++ b/drivers/pci/pcie/aer/aer_inject.c
@@ -302,7 +302,7 @@  static int aer_inject(struct aer_error_inj *einj)
 	unsigned long flags;
 	unsigned int devfn = PCI_DEVFN(einj->dev, einj->fn);
 	int pos_cap_err, rp_pos_cap_err;
-	u32 sever;
+	u32 sever, mask;
 	int ret = 0;
 
 	dev = pci_get_bus_and_slot(einj->bus, devfn);
@@ -354,6 +354,22 @@  static int aer_inject(struct aer_error_inj *einj)
 	err->header_log2 = einj->header_log2;
 	err->header_log3 = einj->header_log3;
 
+	pci_read_config_dword(dev, pos_cap_err + PCI_ERR_COR_MASK, &mask);
+	if (einj->cor_status && !(einj->cor_status & ~mask)) {
+		ret = -EINVAL;
+		printk(KERN_WARNING "The correctable error is masked by device\n");
+		spin_unlock_irqrestore(&inject_lock, flags);
+		goto out_put;
+	}
+
+	pci_read_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK, &mask);
+	if (einj->uncor_status && !(einj->uncor_status & ~mask)) {
+		ret = -EINVAL;
+		printk(KERN_WARNING "The uncorrectable error is masked by device\n");
+		spin_unlock_irqrestore(&inject_lock, flags);
+		goto out_put;
+	}
+
 	rperr = __find_aer_error_by_dev(rpdev);
 	if (!rperr) {
 		rperr = rperr_alloc;