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serial: pxa2xx: mark PM functions as __maybe_unused 

The fresh new serial driver for pxa produces warnings when
CONFIG_PM_SLEEP is disabled:

drivers/tty/serial/8250/8250_pxa.c:50:12: error: 'serial_pxa_resume' defined but not used [-Werror=unused-function]
drivers/tty/serial/8250/8250_pxa.c:41:12: error: 'serial_pxa_suspend' defined but not used [-Werror=unused-function]

This removes the #ifdef around the two functions and instead marks both
as __maybe_unused, which is more robust and avoids the warning.

Fixes: ab28f51c77 ("serial: rewrite pxa2xx-uart to use 8250_core")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2016-11-08 15:50:42 +01:00 committed by Greg Kroah-Hartman
parent 9de4153dbb
commit 65dabaf532
1 changed files with 2 additions and 4 deletions
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6
drivers/tty/serial/8250/8250_pxa.c
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@ -37,8 +37,7 @@ struct pxa8250_data {
struct clk *clk;
};
#ifdef CONFIG_PM
static int serial_pxa_suspend(struct device *dev)
static int __maybe_unused serial_pxa_suspend(struct device *dev)
{
struct pxa8250_data *data = dev_get_drvdata(dev);
@ -47,7 +46,7 @@ static int serial_pxa_suspend(struct device *dev)
return 0;
}
static int serial_pxa_resume(struct device *dev)
static int __maybe_unused serial_pxa_resume(struct device *dev)
{
struct pxa8250_data *data = dev_get_drvdata(dev);
@ -55,7 +54,6 @@ static int serial_pxa_resume(struct device *dev)
return 0;
}
#endif
static const struct dev_pm_ops serial_pxa_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(serial_pxa_suspend, serial_pxa_resume)