diff mbox

[2/4] PCI: Remove PCIe Capability version checks

Message ID 20130828192708.5895.51049.stgit@bhelgaas-glaptop (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Bjorn Helgaas Aug. 28, 2013, 7:27 p.m. UTC 
Previously we relied on the PCIe r3.0, sec 7.8, spec language that says
"For Functions that do not implement the [Link, Slot, Root] registers,
these spaces must be hardwired to 0b," which means that for v2 PCIe
capabilities, we don't need to check the device type at all.

But it's simpler if we don't need to check the capability version at all,
and I think the spec is explicit enough about which registers are required
for which types that we can remove the version checks.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/pci/access.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)


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diff mbox

Patch

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index e26c3bd..9a46fa9 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -484,8 +484,7 @@  static inline bool pcie_cap_has_lnkctl(const struct pci_dev *dev)
 {
 	int type = pci_pcie_type(dev);
 
-	return pcie_cap_version(dev) > 1 ||
-	       type == PCI_EXP_TYPE_ENDPOINT ||
+	return type == PCI_EXP_TYPE_ENDPOINT ||
 	       type == PCI_EXP_TYPE_LEG_END ||
 	       type == PCI_EXP_TYPE_ROOT_PORT ||
 	       type == PCI_EXP_TYPE_UPSTREAM ||
@@ -498,8 +497,7 @@  static inline bool pcie_cap_has_sltctl(const struct pci_dev *dev)
 {
 	int type = pci_pcie_type(dev);
 
-	return pcie_cap_version(dev) > 1 ||
-	       type == PCI_EXP_TYPE_ROOT_PORT ||
+	return type == PCI_EXP_TYPE_ROOT_PORT ||
 	       (type == PCI_EXP_TYPE_DOWNSTREAM &&
 		pcie_caps_reg(dev) & PCI_EXP_FLAGS_SLOT);
 }
@@ -508,8 +506,7 @@  static inline bool pcie_cap_has_rtctl(const struct pci_dev *dev)
 {
 	int type = pci_pcie_type(dev);
 
-	return pcie_cap_version(dev) > 1 ||
-	       type == PCI_EXP_TYPE_ROOT_PORT ||
+	return type == PCI_EXP_TYPE_ROOT_PORT ||
 	       type == PCI_EXP_TYPE_RC_EC;
 }