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@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202407310047.PIoWlrZZ-lkp@xxxxxxxxx/
Fixes: d9e5a0ce2f16 ("serial: 8250_platform: Enable generic 16550A platform devices")
Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
---
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
