[PATCH] mmc: fix mmc_{un,}register_pm_notifier prototypes

[Arnd Bergmann]

The mmc pm notifiers were recently reworked, but the new
code produces a lot of warnings when CONFIG_PM_SLEEP is disabled:

In file included from ../drivers/mmc/core/sdio_bus.c:27:0:
drivers/mmc/core/core.h:97:13: warning: 'mmc_register_pm_notifier' defined but not used [-Wunused-function]

The obvious solution is to add the 'inline' keyword at the
function definition, as it should be for any function defined
in a header file.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: 0e40be7c20e0 ("mmc: core: Refactor code to register the MMC PM notifier")

diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index bd00ac2cdc1b..0fa86a2afc26 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -94,8 +94,8 @@ int mmc_hs400_to_hs200(struct mmc_card *card);
 void mmc_register_pm_notifier(struct mmc_host *host);
 void mmc_unregister_pm_notifier(struct mmc_host *host);
 #else
-static void mmc_register_pm_notifier(struct mmc_host *host) { }
-static void mmc_unregister_pm_notifier(struct mmc_host *host) { }
+static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
+static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
 #endif
 
 #endif

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