[PATCH v2 13/26] drm: fsl-dcu: Remove #ifdef guards for PM related functions

From: Paul Cercueil
Date: Tue Nov 29 2022 - 14:21:00 EST


Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is 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.

Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
Cc: Stefan Agner <stefan@xxxxxxxx>
Cc: Alison Wang <alison.wang@xxxxxxx>
---
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 8579c7629f5e..474ad45c73be 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -164,7 +164,6 @@ static const struct drm_driver fsl_dcu_drm_driver = {
.minor = 1,
};

-#ifdef CONFIG_PM_SLEEP
static int fsl_dcu_drm_pm_suspend(struct device *dev)
{
struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
@@ -209,11 +208,9 @@ static int fsl_dcu_drm_pm_resume(struct device *dev)

return 0;
}
-#endif

-static const struct dev_pm_ops fsl_dcu_drm_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(fsl_dcu_drm_pm_suspend, fsl_dcu_drm_pm_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(fsl_dcu_drm_pm_ops,
+ fsl_dcu_drm_pm_suspend, fsl_dcu_drm_pm_resume);

static const struct fsl_dcu_soc_data fsl_dcu_ls1021a_data = {
.name = "ls1021a",
@@ -363,7 +360,7 @@ static struct platform_driver fsl_dcu_drm_platform_driver = {
.remove = fsl_dcu_drm_remove,
.driver = {
.name = "fsl-dcu",
- .pm = &fsl_dcu_drm_pm_ops,
+ .pm = pm_sleep_ptr(&fsl_dcu_drm_pm_ops),
.of_match_table = fsl_dcu_of_match,
},
};
--
2.35.1