PCI/ERR: Rename reset_link() to reset_subordinates()

reset_link() appears to be misnamed.  The point is to reset any devices
below a given bridge, so rename it to reset_subordinates() to make it clear
that we are passing a bridge with the intent to reset the devices below it.

Link: https://lore.kernel.org/r/20201121001036.8560-5-sean.v.kelley@intel.com
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC
Signed-off-by: NSean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NKuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/pci/pci.h

@@ -573,7 +573,7 @@ static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
 /* PCI error reporting and recovery */
 pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
 		pci_channel_state_t state,
-			pci_ers_result_t (*reset_link)(struct pci_dev *pdev));
+		pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev));
 
 bool pcie_wait_for_link(struct pci_dev *pdev, bool active);
 #ifdef CONFIG_PCIEASPM

drivers/pci/pcie/err.c

@@ -148,7 +148,7 @@ static int report_resume(struct pci_dev *dev, void *data)
 
 pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
 		pci_channel_state_t state,
-			pci_ers_result_t (*reset_link)(struct pci_dev *pdev))
+		pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev))
 {
 	pci_ers_result_t status = PCI_ERS_RESULT_CAN_RECOVER;
 	struct pci_bus *bus;
@@ -165,9 +165,9 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
 	pci_dbg(dev, "broadcast error_detected message\n");
 	if (state == pci_channel_io_frozen) {
 		pci_walk_bus(bus, report_frozen_detected, &status);
-		status = reset_link(dev);
+		status = reset_subordinates(dev);
 		if (status != PCI_ERS_RESULT_RECOVERED) {
-			pci_warn(dev, "link reset failed\n");
+			pci_warn(dev, "subordinate device reset failed\n");
 			goto failed;
 		}
 	} else {