PCI: Rename CRS Completion Status to RRS

PCIe r6.0 changed the abbreviation for "Configuration Request Retry Status"
Completion Status from "CRS" to "RRS" and uses the terminology of
"Configuration RRS Software Visibility" instead of "CRS Software
Visibility".

Align the Linux usage with the r6.0 spec language.  No functional change
intended.

It's confusing to make this change, but I think "RRS" *is* a better
abbreviation because it was easy to interpret "CRS" as "Completion Retry
Status", which really didn't make any sense.

Link: https://lore.kernel.org/r/20240827234848.4429-4-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 14 insertions, 14 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b1615da9eb6b..e79d9bea32bf 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1203,16 +1203,16 @@ struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
 }
 EXPORT_SYMBOL(pci_add_new_bus);
 
-static void pci_enable_crs(struct pci_dev *pdev)
+static void pci_enable_rrs_sv(struct pci_dev *pdev)
 {
 	u16 root_cap = 0;
 
-	/* Enable CRS Software Visibility if supported */
+	/* Enable Configuration RRS Software Visibility if supported */
 	pcie_capability_read_word(pdev, PCI_EXP_RTCAP, &root_cap);
-	if (root_cap & PCI_EXP_RTCAP_CRSVIS) {
+	if (root_cap & PCI_EXP_RTCAP_RRS_SV) {
 		pcie_capability_set_word(pdev, PCI_EXP_RTCTL,
-					 PCI_EXP_RTCTL_CRSSVE);
-		pdev->config_crs_sv = 1;
+					 PCI_EXP_RTCTL_RRS_SVE);
+		pdev->config_rrs_sv = 1;
 	}
 }
 
@@ -1328,7 +1328,7 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev,
 	pci_write_config_word(dev, PCI_BRIDGE_CONTROL,
 			      bctl & ~PCI_BRIDGE_CTL_MASTER_ABORT);
 
-	pci_enable_crs(dev);
+	pci_enable_rrs_sv(dev);
 
 	if ((secondary || subordinate) && !pcibios_assign_all_busses() &&
 	    !is_cardbus && !broken) {
@@ -2345,23 +2345,23 @@ struct pci_dev *pci_alloc_dev(struct pci_bus *bus)
 }
 EXPORT_SYMBOL(pci_alloc_dev);
 
-static bool pci_bus_wait_crs(struct pci_bus *bus, int devfn, u32 *l,
+static bool pci_bus_wait_rrs(struct pci_bus *bus, int devfn, u32 *l,
 			     int timeout)
 {
 	int delay = 1;
 
-	if (!pci_bus_crs_vendor_id(*l))
-		return true;	/* not a CRS completion */
+	if (!pci_bus_rrs_vendor_id(*l))
+		return true;	/* not a Configuration RRS completion */
 
 	if (!timeout)
-		return false;	/* CRS, but caller doesn't want to wait */
+		return false;	/* RRS, but caller doesn't want to wait */
 
 	/*
 	 * We got the reserved Vendor ID that indicates a completion with
-	 * Configuration Request Retry Status (CRS).  Retry until we get a
+	 * Configuration Request Retry Status (RRS).  Retry until we get a
 	 * valid Vendor ID or we time out.
 	 */
-	while (pci_bus_crs_vendor_id(*l)) {
+	while (pci_bus_rrs_vendor_id(*l)) {
 		if (delay > timeout) {
 			pr_warn("pci %04x:%02x:%02x.%d: not ready after %dms; giving up\n",
 				pci_domain_nr(bus), bus->number,
@@ -2400,8 +2400,8 @@ bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l,
 	    *l == 0x0000ffff || *l == 0xffff0000)
 		return false;
 
-	if (pci_bus_crs_vendor_id(*l))
-		return pci_bus_wait_crs(bus, devfn, l, timeout);
+	if (pci_bus_rrs_vendor_id(*l))
+		return pci_bus_wait_rrs(bus, devfn, l, timeout);
 
 	return true;
 }