From 3a15955d7cf0b6c7527ee3bd97c3c355450e3fa1 Mon Sep 17 00:00:00 2001
From: Shanker Donthineni <sdonthineni@nvidia.com>
Date: Tue, 17 Aug 2021 23:34:57 +0530
Subject: [PATCH] PCI: Add pci_set_acpi_fwnode() to set ACPI_COMPANION
Git-commit: 3a15955d7cf0b6c7527ee3bd97c3c355450e3fa1
References: jsc#SLE-19357
Patch-mainline: v5.15-rc1
Move the existing logic from acpi_pci_bridge_d3() to a separate function
pci_set_acpi_fwnode() to set the ACPI fwnode. No functional change
intended.
Link: https://lore.kernel.org/r/20210817180500.1253-7-ameynarkhede03@gmail.com
Signed-off-by: Shanker Donthineni <sdonthineni@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/pci/pci-acpi.c | 12 ++++++++----
drivers/pci/pci.h | 2 ++
2 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 36bc23e21759..eaddbf701759 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -934,6 +934,13 @@ static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
static struct acpi_device *acpi_pci_find_companion(struct device *dev);
+void pci_set_acpi_fwnode(struct pci_dev *dev)
+{
+ if (!ACPI_COMPANION(&dev->dev) && !pci_dev_is_added(dev))
+ ACPI_COMPANION_SET(&dev->dev,
+ acpi_pci_find_companion(&dev->dev));
+}
+
static bool acpi_pci_bridge_d3(struct pci_dev *dev)
{
const struct fwnode_handle *fwnode;
@@ -945,11 +952,8 @@ static bool acpi_pci_bridge_d3(struct pci_dev *dev)
return false;
/* Assume D3 support if the bridge is power-manageable by ACPI. */
+ pci_set_acpi_fwnode(dev);
adev = ACPI_COMPANION(&dev->dev);
- if (!adev && !pci_dev_is_added(dev)) {
- adev = acpi_pci_find_companion(&dev->dev);
- ACPI_COMPANION_SET(&dev->dev, adev);
- }
if (adev && acpi_device_power_manageable(adev))
return true;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index b31afd4669cc..232047e58b73 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -707,7 +707,9 @@ static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL
#ifdef CONFIG_ACPI
int pci_acpi_program_hp_params(struct pci_dev *dev);
extern const struct attribute_group pci_dev_acpi_attr_group;
+void pci_set_acpi_fwnode(struct pci_dev *dev);
#else
+static inline void pci_set_acpi_fwnode(struct pci_dev *dev) {}
static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
{
return -ENODEV;
--
2.26.2