From: Sean V Kelley <sean.v.kelley@intel.com>
Date: Fri, 20 Nov 2020 16:10:27 -0800
Subject: PCI/ERR: Simplify by computing pci_pcie_type() once
Git-commit: 480ef7cb9fcebda7b28cbed4f6cdcf0a02f4a6ca
Patch-mainline: v5.11-rc1
References: bsc#1174426

Instead of calling pci_pcie_type(dev) twice, call it once and save the
result.  No functional change intended.

Link: https://lore.kernel.org/r/20201121001036.8560-7-sean.v.kelley@intel.com
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # non-native/no RCEC
Signed-off-by: Sean V Kelley <sean.v.kelley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/pci/pcie/aer.c         |    5 +++--
 drivers/pci/pcie/err.c         |    5 +++--
 drivers/pci/pcie/portdrv_pci.c |    9 +++++----
 3 files changed, 11 insertions(+), 8 deletions(-)

--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -972,6 +972,7 @@ EXPORT_SYMBOL_GPL(aer_recover_queue);
  */
 int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
 {
+	int type = pci_pcie_type(dev);
 	int aer = dev->aer_cap;
 	int temp;
 
@@ -990,8 +991,8 @@ int aer_get_device_error_info(struct pci
 			&info->mask);
 		if (!(info->status & ~info->mask))
 			return 0;
-	} else if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT ||
-	           pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM ||
+	} else if (type == PCI_EXP_TYPE_ROOT_PORT ||
+		   type == PCI_EXP_TYPE_DOWNSTREAM ||
 		   info->severity == AER_NONFATAL) {
 
 		/* Link is still healthy for IO reads */
--- a/drivers/pci/pcie/err.c
+++ b/drivers/pci/pcie/err.c
@@ -146,6 +146,7 @@ pci_ers_result_t pcie_do_recovery(struct
 		pci_channel_state_t state,
 		pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev))
 {
+	int type = pci_pcie_type(dev);
 	pci_ers_result_t status = PCI_ERS_RESULT_CAN_RECOVER;
 	struct pci_bus *bus;
 
@@ -153,8 +154,8 @@ pci_ers_result_t pcie_do_recovery(struct
 	 * Error recovery runs on all subordinates of the first downstream port.
 	 * If the downstream port detected the error, it is cleared at the end.
 	 */
-	if (!(pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT ||
-	      pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM))
+	if (!(type == PCI_EXP_TYPE_ROOT_PORT ||
+	      type == PCI_EXP_TYPE_DOWNSTREAM))
 		dev = pci_upstream_bridge(dev);
 	bus = dev->subordinate;
 
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -93,13 +93,14 @@ static const struct dev_pm_ops pcie_port
 static int pcie_portdrv_probe(struct pci_dev *dev,
 					const struct pci_device_id *id)
 {
+	int type = pci_pcie_type(dev);
 	int status;
 
 	if (!pci_is_pcie(dev) ||
-	    ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) &&
-	     (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM) &&
-	     (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM) &&
-	     (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_EC)))
+	    ((type != PCI_EXP_TYPE_ROOT_PORT) &&
+	     (type != PCI_EXP_TYPE_UPSTREAM) &&
+	     (type != PCI_EXP_TYPE_DOWNSTREAM) &&
+	     (type != PCI_EXP_TYPE_RC_EC)))
 		return -ENODEV;
 
 	status = pcie_port_device_register(dev);