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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@crapouillou.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221129191733.137897-9-paul@crapouillou.net