pwm: imx-tpm: Use DEFINE_SIMPLE_DEV_PM_OPS for PM functions

This macro has the advantage over SIMPLE_DEV_PM_OPS that we don't have to
care about when the functions are actually used, so the corresponding
__maybe_unused can be dropped.

Also make use of pm_ptr() to discard all PM related stuff if CONFIG_PM
isn't enabled.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c
index dc6aafeb9f7b44eb976cb89edbaf965fb648723a..9fc290e647e1bdbef4bf2f2553d20c1219a12697 100644 (file)
--- a/drivers/pwm/pwm-imx-tpm.c
+++ b/drivers/pwm/pwm-imx-tpm.c
@@ -371,7 +371,7 @@ static int pwm_imx_tpm_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int __maybe_unused pwm_imx_tpm_suspend(struct device *dev)
+static int pwm_imx_tpm_suspend(struct device *dev)
 {
        struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev);
 
@@ -390,7 +390,7 @@ static int __maybe_unused pwm_imx_tpm_suspend(struct device *dev)
        return 0;
 }
 
-static int __maybe_unused pwm_imx_tpm_resume(struct device *dev)
+static int pwm_imx_tpm_resume(struct device *dev)
 {
        struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev);
        int ret = 0;
@@ -402,8 +402,8 @@ static int __maybe_unused pwm_imx_tpm_resume(struct device *dev)
        return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(imx_tpm_pwm_pm,
-                        pwm_imx_tpm_suspend, pwm_imx_tpm_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(imx_tpm_pwm_pm,
+                               pwm_imx_tpm_suspend, pwm_imx_tpm_resume);
 
 static const struct of_device_id imx_tpm_pwm_dt_ids[] = {
        { .compatible = "fsl,imx7ulp-pwm", },
@@ -415,7 +415,7 @@ static struct platform_driver imx_tpm_pwm_driver = {
        .driver = {
                .name = "imx7ulp-tpm-pwm",
                .of_match_table = imx_tpm_pwm_dt_ids,
-               .pm = &imx_tpm_pwm_pm,
+               .pm = pm_ptr(&imx_tpm_pwm_pm),
        },
        .probe  = pwm_imx_tpm_probe,
 };