From: Vidya Sagar <vidyas@nvidia.com>
To: <bhelgaas@google.com>, <rafael@kernel.org>, <lenb@kernel.org>,
<will@kernel.org>, <lpieralisi@kernel.org>, <kw@linux.com>,
<robh@kernel.org>, <frowand.list@gmail.com>
Cc: <linux-pci@vger.kernel.org>, <linux-acpi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <treding@nvidia.com>,
<jonathanh@nvidia.com>, <kthota@nvidia.com>,
<mmaddireddy@nvidia.com>, <vidyas@nvidia.com>,
<sagar.tv@gmail.com>
Subject: [PATCH V7 3/4] PCI: Unify ACPI and DT 'preserve config' support
Date: Wed, 8 May 2024 23:11:37 +0530 [thread overview]
Message-ID: <20240508174138.3630283-4-vidyas@nvidia.com> (raw)
In-Reply-To: <20240508174138.3630283-1-vidyas@nvidia.com>
Unify the 'preserve config' support across ACPI and device-tree
boot flows.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
drivers/pci/probe.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index ee086d029450..2c232c22d6af 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -894,6 +894,9 @@ static bool pci_preserve_config(struct pci_host_bridge *host_bridge)
if (pci_acpi_preserve_config(host_bridge))
return true;
+ if (host_bridge->dev.parent && host_bridge->dev.parent->of_node)
+ return of_pci_preserve_config(host_bridge->dev.parent->of_node);
+
return false;
}
--
2.25.1
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next prev parent reply other threads:[~2024-05-08 17:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 17:41 [PATCH V7 0/4] PCI: Add support for preserving boot configuration Vidya Sagar
2024-05-08 17:41 ` [PATCH V7 1/4] PCI: Move PRESERVE_BOOT_CONFIG _DSM evaluation to pci_register_host_bridge() Vidya Sagar
2024-05-08 17:41 ` [PATCH V7 2/4] PCI: of: Add of_pci_preserve_config() for per-host bridge support Vidya Sagar
2024-05-08 17:41 ` Vidya Sagar [this message]
2024-05-08 17:41 ` [PATCH V7 4/4] PCI: Use preserve_config in place of pci_flags Vidya Sagar
2024-05-17 5:35 ` [PATCH V7 0/4] PCI: Add support for preserving boot configuration Vidya Sagar
2024-06-03 7:52 ` Vidya Sagar
2024-06-03 21:21 ` Bjorn Helgaas
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