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Message-ID: <20240807062839.1738705-1-sunilvl@ventanamicro.com>
Date: Wed,  7 Aug 2024 11:58:39 +0530
From: Sunil V L <sunilvl@...tanamicro.com>
To: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Sunil V L <sunilvl@...tanamicro.com>,
	kernel test robot <lkp@...el.com>
Subject: [PATCH] serial: 8250_platform: Fix unused acpi_platform_serial_table warning

The LKP reports below warning.

>> drivers/tty/serial/8250/8250_platform.c:271:36: warning: 'acpi_platform_serial_table' defined but not used [-Wunused-const-variable=]

     271 | static const struct acpi_device_id acpi_platform_serial_table[] = {
         |                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~

This is because some architectures don't define either ACPI or
MODULE/MODULE_DEVICE_TABLE. So, keep acpi_platform_serial_table under
CONFIG_ACPI to fix the warning on such architectures.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407310047.PIoWlrZZ-lkp@intel.com/
Fixes: d9e5a0ce2f16 ("serial: 8250_platform: Enable generic 16550A platform devices")
Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
---
 drivers/tty/serial/8250/8250_platform.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/8250/8250_platform.c b/drivers/tty/serial/8250/8250_platform.c
index bdfb16bed4f2..168e635002aa 100644
--- a/drivers/tty/serial/8250/8250_platform.c
+++ b/drivers/tty/serial/8250/8250_platform.c
@@ -268,11 +268,13 @@ static int serial8250_resume(struct platform_device *dev)
 	return 0;
 }
 
+#ifdef CONFIG_ACPI
 static const struct acpi_device_id acpi_platform_serial_table[] = {
 	{ "RSCV0003", 0 }, // RISC-V Generic 16550A UART
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, acpi_platform_serial_table);
+#endif
 
 static struct platform_driver serial8250_isa_driver = {
 	.probe		= serial8250_probe,
-- 
2.43.0


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