mmc: core: refactor debugfs code

Now, CONFIG_DEBUG_FS is scattered in various functions, to make code
clean centralized processing CONFIG_DEBUG_FS in mmc debugfs module.

Signed-off-by: Ye Bin <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/core/bus.c

···
 			uhs_bus_speed_mode, type, card->rca);
 	}
 
-#ifdef CONFIG_DEBUG_FS
 	mmc_add_card_debugfs(card);
-#endif
 	card->dev.of_node = mmc_of_find_child_device(card->host, 0);
 
 	device_enable_async_suspend(&card->dev);
···
 {
 	struct mmc_host *host = card->host;
 
-#ifdef CONFIG_DEBUG_FS
 	mmc_remove_card_debugfs(card);
-#endif
 
 	if (mmc_card_present(card)) {
 		if (mmc_host_is_spi(card->host)) {

drivers/mmc/core/core.h

···
 extern bool use_spi_crc;
 
 /* Debugfs information for hosts and cards */
+#ifdef CONFIG_DEBUG_FS
 void mmc_add_host_debugfs(struct mmc_host *host);
 void mmc_remove_host_debugfs(struct mmc_host *host);
 
 void mmc_add_card_debugfs(struct mmc_card *card);
 void mmc_remove_card_debugfs(struct mmc_card *card);
+#else
+static inline void mmc_add_host_debugfs(struct mmc_host *host)
+{
+}
+static inline void mmc_remove_host_debugfs(struct mmc_host *host)
+{
+}
+static inline void mmc_add_card_debugfs(struct mmc_card *card)
+{
+}
+static inline void mmc_remove_card_debugfs(struct mmc_card *card)
+{
+}
+#endif
 
 int mmc_execute_tuning(struct mmc_card *card);
 int mmc_hs200_to_hs400(struct mmc_card *card);

drivers/mmc/core/host.c

···
 
 	led_trigger_register_simple(dev_name(&host->class_dev), &host->led);
 
-#ifdef CONFIG_DEBUG_FS
 	mmc_add_host_debugfs(host);
-#endif
 
 	mmc_start_host(host);
 	return 0;
···
 {
 	mmc_stop_host(host);
 
-#ifdef CONFIG_DEBUG_FS
 	mmc_remove_host_debugfs(host);
-#endif
 
 	device_del(&host->class_dev);