diff mbox series

[v2,3/5] ACPI/PCI: Ignore _OSC negotiation result if pcie_ports_native is set.

Message ID 969d4f083f445532bd1cdd98e3ce110574a461b0.1590355211.git.sathyanarayanan.kuppuswamy@linux.intel.com (mailing list archive)
State Superseded, archived
Headers show
Series Remove AER HEST table parser | expand

Commit Message

Kuppuswamy Sathyanarayanan May 24, 2020, 9:27 p.m. UTC 
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>

pcie_ports_native is set only if user requests native handling
of PCIe capabilities via pcie_port_setup command line option.
User input takes precedence over _OSC based control negotiation
result. So consider the _OSC negotiated result only if
pcie_ports_native is unset.

Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
---
 drivers/acpi/pci_root.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)
diff mbox series

Patch

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 9e235c1a75ff..e0039ad3480a 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -914,18 +914,20 @@  struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
 		goto out_release_info;
 
 	host_bridge = to_pci_host_bridge(bus->bridge);
-	if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
-		host_bridge->native_pcie_hotplug = 0;
-	if (!(root->osc_control_set & OSC_PCI_SHPC_NATIVE_HP_CONTROL))
-		host_bridge->native_shpc_hotplug = 0;
-	if (!(root->osc_control_set & OSC_PCI_EXPRESS_AER_CONTROL))
-		host_bridge->native_aer = 0;
-	if (!(root->osc_control_set & OSC_PCI_EXPRESS_PME_CONTROL))
-		host_bridge->native_pme = 0;
-	if (!(root->osc_control_set & OSC_PCI_EXPRESS_LTR_CONTROL))
-		host_bridge->native_ltr = 0;
-	if (!(root->osc_control_set & OSC_PCI_EXPRESS_DPC_CONTROL))
-		host_bridge->native_dpc = 0;
+	if (!pcie_ports_native) {
+		if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL))
+			host_bridge->native_pcie_hotplug = 0;
+		if (!(root->osc_control_set & OSC_PCI_SHPC_NATIVE_HP_CONTROL))
+			host_bridge->native_shpc_hotplug = 0;
+		if (!(root->osc_control_set & OSC_PCI_EXPRESS_AER_CONTROL))
+			host_bridge->native_aer = 0;
+		if (!(root->osc_control_set & OSC_PCI_EXPRESS_PME_CONTROL))
+			host_bridge->native_pme = 0;
+		if (!(root->osc_control_set & OSC_PCI_EXPRESS_LTR_CONTROL))
+			host_bridge->native_ltr = 0;
+		if (!(root->osc_control_set & OSC_PCI_EXPRESS_DPC_CONTROL))
+			host_bridge->native_dpc = 0;
+	}
 
 	/*
 	 * Evaluate the "PCI Boot Configuration" _DSM Function.  If it