i2c: au1550: Remove #ifdef guards for PM related functions

Use the new PM macros for the suspend and resume functions to be
automatically dropped by the compiler when CONFIG_PM or
CONFIG_PM_SLEEP are disabled, without having to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Note that the behaviour is slightly different than before; the original
code wrapped the suspend/resume with #ifdef CONFIG_PM guards, which
resulted in these functions being compiled in but never used when
CONFIG_PM_SLEEP was disabled.

Now, those functions are only compiled in when CONFIG_PM_SLEEP is
enabled.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20230722115046.27323-2-paul@crapouillou.net
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>

diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index e66c12ecf27063627535367fc801188de3501f64..8e43f25c117e6f4471a761e4cf6b3cb014fa5b13 100644 (file)
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -342,7 +342,6 @@ static void i2c_au1550_remove(struct platform_device *pdev)
        i2c_au1550_disable(priv);
 }
 
-#ifdef CONFIG_PM
 static int i2c_au1550_suspend(struct device *dev)
 {
        struct i2c_au1550_data *priv = dev_get_drvdata(dev);
@@ -361,21 +360,13 @@ static int i2c_au1550_resume(struct device *dev)
        return 0;
 }
 
-static const struct dev_pm_ops i2c_au1550_pmops = {
-       .suspend        = i2c_au1550_suspend,
-       .resume         = i2c_au1550_resume,
-};
-
-#define AU1XPSC_SMBUS_PMOPS (&i2c_au1550_pmops)
-
-#else
-#define AU1XPSC_SMBUS_PMOPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(i2c_au1550_pmops,
+                               i2c_au1550_suspend, i2c_au1550_resume);
 
 static struct platform_driver au1xpsc_smbus_driver = {
        .driver = {
                .name   = "au1xpsc_smbus",
-               .pm     = AU1XPSC_SMBUS_PMOPS,
+               .pm     = pm_sleep_ptr(&i2c_au1550_pmops),
        },
        .probe          = i2c_au1550_probe,
        .remove_new     = i2c_au1550_remove,