Quoting Paul Cercueil (2022-11-07 17:52:49)
> 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>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> ---
> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Cc: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
> ---
> drivers/gpu/drm/shmobile/shmob_drm_drv.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
> index 3d511fa38913..337040fa6438 100644
> --- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c
> +++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
> @@ -143,7 +143,6 @@ static const struct drm_driver shmob_drm_driver = {
> * Power management
> */
>
> -#ifdef CONFIG_PM_SLEEP
> static int shmob_drm_pm_suspend(struct device *dev)
> {
> struct shmob_drm_device *sdev = dev_get_drvdata(dev);
> @@ -165,11 +164,9 @@ static int shmob_drm_pm_resume(struct device *dev)
> drm_kms_helper_poll_enable(sdev->ddev);
> return 0;
> }
> -#endif
>
> -static const struct dev_pm_ops shmob_drm_pm_ops = {
> - SET_SYSTEM_SLEEP_PM_OPS(shmob_drm_pm_suspend, shmob_drm_pm_resume)
> -};
> +static DEFINE_SIMPLE_DEV_PM_OPS(shmob_drm_pm_ops,
> + shmob_drm_pm_suspend, shmob_drm_pm_resume);
>
> /* -----------------------------------------------------------------------------
> * Platform driver
> @@ -292,7 +289,7 @@ static struct platform_driver shmob_drm_platform_driver = {
> .remove = shmob_drm_remove,
> .driver = {
> .name = "shmob-drm",
> - .pm = &shmob_drm_pm_ops,
> + .pm = pm_sleep_ptr(&shmob_drm_pm_ops),
> },
> };
>
> --
> 2.35.1
>
