linux-kernel - [PATCH 1/2] PCI: Drop of_match_ptr() to avoid unused variables

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Date:   Tue, 25 Oct 2022 14:13:38 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Lorenzo Pieralisi <lpieralisi@...nel.org>
Cc:     Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 1/2] PCI: Drop of_match_ptr() to avoid unused variables

From: Bjorn Helgaas <bhelgaas@...gle.com>

We have stubs for most OF interfaces even when CONFIG_OF is not set, so we
allow building of most controller drivers in that case for compile testing.

When CONFIG_OF is not set, "of_match_ptr(<match_table>)" compiles to NULL,
which leaves <match_table> unused, resulting in errors like this:

  $ make W=1
  drivers/pci/controller/pci-xgene.c:636:34: error: ‘xgene_pcie_match_table’ defined but not used [-Werror=unused-const-variable=]

Drop of_match_ptr() to avoid the unused variable warning.

See also 1dff012f636d ("PCI: Drop of_match_ptr() to avoid unused
variables").

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 drivers/pci/controller/pci-ftpci100.c | 2 +-
 drivers/pci/controller/pci-v3-semi.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/pci-ftpci100.c b/drivers/pci/controller/pci-ftpci100.c
index 0cfd9d5a497c..ecd3009df586 100644
--- a/drivers/pci/controller/pci-ftpci100.c
+++ b/drivers/pci/controller/pci-ftpci100.c
@@ -553,7 +553,7 @@ static const struct of_device_id faraday_pci_of_match[] = {
 static struct platform_driver faraday_pci_driver = {
 	.driver = {
 		.name = "ftpci100",
-		.of_match_table = of_match_ptr(faraday_pci_of_match),
+		.of_match_table = faraday_pci_of_match,
 		.suppress_bind_attrs = true,
 	},
 	.probe  = faraday_pci_probe,
diff --git a/drivers/pci/controller/pci-v3-semi.c b/drivers/pci/controller/pci-v3-semi.c
index 154a5398633c..d1f9ee4a1ede 100644
--- a/drivers/pci/controller/pci-v3-semi.c
+++ b/drivers/pci/controller/pci-v3-semi.c
@@ -902,7 +902,7 @@ static const struct of_device_id v3_pci_of_match[] = {
 static struct platform_driver v3_pci_driver = {
 	.driver = {
 		.name = "pci-v3-semi",
-		.of_match_table = of_match_ptr(v3_pci_of_match),
+		.of_match_table = v3_pci_of_match,
 		.suppress_bind_attrs = true,
 	},
 	.probe  = v3_pci_probe,
-- 
2.25.1