PCI: pciehp: Use PCI_EXP_SLTCAP_PSN define

Use PCI_EXP_SLTCAP_PSN to make it easier to find code that uses the
Physical Slot Number field in the PCIe Slot Capabilities register.

No functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 8a66866b8cf1ad799de42c2a15075f7549f0ca3a..8e9012dca450df581f718431e25e85d469827534 100644 (file)
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -127,7 +127,7 @@ struct controller {
 #define HP_SUPR_RM(ctrl)       ((ctrl)->slot_cap & PCI_EXP_SLTCAP_HPS)
 #define EMI(ctrl)              ((ctrl)->slot_cap & PCI_EXP_SLTCAP_EIP)
 #define NO_CMD_CMPL(ctrl)      ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS)
-#define PSN(ctrl)              ((ctrl)->slot_cap >> 19)
+#define PSN(ctrl)              (((ctrl)->slot_cap & PCI_EXP_SLTCAP_PSN) >> 19)
 
 int pciehp_sysfs_enable_slot(struct slot *slot);
 int pciehp_sysfs_disable_slot(struct slot *slot);