linux-kernel - [PATCH] serial: 8250_dw: Mark acpi match table as maybe unused

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Message-Id: <20210930124950.3069638-1-daniel@0x0f.com>
Date:   Thu, 30 Sep 2021 21:49:50 +0900
From:   Daniel Palmer <daniel@...f.com>
To:     andriy.shevchenko@...ux.intel.com, gregkh@...uxfoundation.org,
        linux-serial@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Daniel Palmer <daniel@...f.com>
Subject: [PATCH] serial: 8250_dw: Mark acpi match table as maybe unused

When building kernels without ACPI support the table is declared
but is not used because ACPI_PTR() turns it into a NULL.

Add the __maybe_unused attribute to stop the compiler whining.

Signed-off-by: Daniel Palmer <daniel@...f.com>
---
 drivers/tty/serial/8250/8250_dw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index a3a0154da567..599d2bfff045 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -704,7 +704,7 @@ static const struct of_device_id dw8250_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, dw8250_of_match);
 
-static const struct acpi_device_id dw8250_acpi_match[] = {
+static const struct acpi_device_id __maybe_unused dw8250_acpi_match[] = {
 	{ "INT33C4", 0 },
 	{ "INT33C5", 0 },
 	{ "INT3434", 0 },
-- 
2.33.0