Devicetree
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From: Alex Elder <elder@riscstar.com>
To: bhelgaas@google.com, robh@kernel.org, saravanak@kernel.org
Cc: herve.codina@bootlin.com, daniel@riscstar.com,
	mohd.anwar@oss.qualcomm.com, lorenzo.bianconi@oss.qualcomm.com,
	linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 4/4] of: address: kill of_node_is_pcie()
Date: Mon, 31 Aug 2026 20:13:37 -0500	[thread overview]
Message-ID: <20260901011338.1323243-5-elder@riscstar.com> (raw)
In-Reply-To: <20260901011338.1323243-1-elder@riscstar.com>

The of_bus->match function for the "PCI" bus type is fairly liberal
in what it accepts as a PCI bus devicetree node.  If a node has no
device_type property, it even allows a node named "pcie@" to be
accepted as represnting a devicetree bus, though it issues a warning
in that case.

A recent PCI commit introduced of_pci_verify_node().  When a PCI
device is added, if it has a devicetree node, that function checks
its device_type property.  For PCI bridge devices, if there is no
device_type property (value "pci"), a warning is issued.

That warning duplicates the warning made by of_node_is_pcie(), and
there's no point in that.  Avoid the second (OF) warning by just
checking the node name directly in of_bus_pci_match().

That leaves of_node_is_pcie() unused, so get rid of it.

Signed-off-by: Alex Elder <elder@riscstar.com>
---
v3: - Added (new) in this version of the series

 drivers/of/address.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 499d37ceae210..ee2eb44884d85 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -134,16 +134,6 @@ static unsigned int of_bus_pci_get_flags(const __be32 *addr)
  * PCI bus specific translator
  */
 
-static bool of_node_is_pcie(const struct device_node *np)
-{
-	bool is_pcie = of_node_name_eq(np, "pcie");
-
-	if (is_pcie)
-		pr_warn_once("%pOF: Missing device_type\n", np);
-
-	return is_pcie;
-}
-
 static int of_bus_pci_match(struct device_node *np)
 {
 	/*
@@ -156,7 +146,7 @@ static int of_bus_pci_match(struct device_node *np)
 	 */
 	return of_node_is_type(np, "pci") || of_node_is_type(np, "pciex") ||
 		of_node_is_type(np, "vci") || of_node_is_type(np, "ht") ||
-		of_node_is_pcie(np);
+		of_node_name_eq(np, "pcie");
 }
 
 static void of_bus_pci_count_cells(struct device_node *np,
-- 
2.53.0


  parent reply	other threads:[~2026-09-01  1:13 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-01  1:13 [PATCH v3 0/4] PCI: of: warn on bogus device_type property Alex Elder
2026-09-01  1:13 ` [PATCH v3 1/4] PCI: of: drop the reg_num argument to of_pci_set_address() Alex Elder
2026-09-01  1:16   ` sashiko-bot
2026-09-01  1:13 ` [PATCH v3 2/4] PCI: of: don't zero flags in of_pci_get_addr_flags() Alex Elder
2026-09-01  1:20   ` sashiko-bot
2026-09-01  2:42     ` Alex Elder
2026-09-01  1:13 ` [PATCH v3 3/4] PCI: of: introduce of_pci_verify_node() Alex Elder
2026-09-01  1:21   ` sashiko-bot
2026-09-01  2:42     ` Alex Elder
2026-09-01 17:32       ` Rob Herring
2026-09-02 12:54         ` Alex Elder
2026-09-01  6:11   ` Herve Codina
2026-09-01  1:13 ` Alex Elder [this message]
2026-09-01  1:18   ` [PATCH v3 4/4] of: address: kill of_node_is_pcie() sashiko-bot
2026-09-01  2:03     ` Alex Elder
2026-09-01  6:45   ` Herve Codina
2026-09-01 14:58     ` Alex Elder
2026-09-01 15:15       ` Herve Codina
2026-09-01 15:25         ` Alex Elder

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