PCI: pcie, aer: fix report of multiple errors

The flag AER_MULTI_ERROR_VALID_FLAG in info->flag does mean that the
root port receives multiple error messages.  Error messages can be
posted from different devices, so it does not mean that each reported
device has multiple errors.

If there are multiple error devices and the root port has valid error
source ID, it would be nice to report which device is the error source
reported first.
Signed-off-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>

drivers/pci/pcie/aer/aerdrv_errprint.c

@@ -185,6 +185,7 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
 {
 	char *errmsg;
 	int err_layer, agent;
+	int id = ((dev->bus->number << 8) | dev->devfn);
 
 	AER_PR(info, "+------ PCI-Express Device Error ------+\n");
 	AER_PR(info, "Error Severity\t\t: %s\n",
@@ -192,11 +193,7 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
 
 	if (info->status == 0) {
 		AER_PR(info, "PCIE Bus Error type\t: (Unaccessible)\n");
-		AER_PR(info, "Unaccessible Received\t: %s\n",
-			info->flags & AER_MULTI_ERROR_VALID_FLAG ?
-				"Multiple" : "First");
-		AER_PR(info, "Unregistered Agent ID\t: %04x\n",
-			(dev->bus->number << 8) | dev->devfn);
+		AER_PR(info, "Unregistered Agent ID\t: %04x\n", id);
 	} else {
 		err_layer = AER_GET_LAYER_ERROR(info->severity, info->status);
 		AER_PR(info, "PCIE Bus Error type\t: %s\n",
@@ -206,15 +203,11 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
 		errmsg = aer_get_error_source_name(info->severity,
 				info->status,
 				errmsg_buff);
-		AER_PR(info, "%s\t: %s\n", errmsg,
-			info->flags & AER_MULTI_ERROR_VALID_FLAG ?
-				"Multiple" : "First");
+		AER_PR(info, "%s\t:\n", errmsg);
 		spin_unlock(&logbuf_lock);
 
 		agent = AER_GET_AGENT(info->severity, info->status);
-		AER_PR(info, "%s\t\t: %04x\n",
-			aer_agent_string[agent],
-			(dev->bus->number << 8) | dev->devfn);
+		AER_PR(info, "%s\t\t: %04x\n", aer_agent_string[agent], id);
 
 		AER_PR(info, "VendorID=%04xh, DeviceID=%04xh,"
 			" Bus=%02xh, Device=%02xh, Function=%02xh\n",
@@ -236,4 +229,8 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
 				*(tlp + 13), *(tlp + 12));
 		}
 	}
+
+	if (info->id && info->error_dev_num > 1 && info->id == id)
+		AER_PR(info, "Error of this Agent(%04x) is reported first\n",
+			id);
 }