[PATCH] mmc: rtsx: usb backend needs LED support

[Arnd Bergmann]

Building the rtsx USB driver requires the LED classdev base
support, otherwise we get this build error:

drivers/built-in.o: In function `rtsx_usb_sdmmc_drv_remove':
:(.text+0x806480): undefined reference to `led_classdev_unregister'
drivers/built-in.o: In function `rtsx_usb_sdmmc_drv_probe':
:(.text+0x806708): undefined reference to `led_classdev_register'

This adds an explicit dependency in Kconfig

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 92d91fe..66aedf3 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -696,6 +696,7 @@ config MMC_REALTEK_PCI
 config MMC_REALTEK_USB
 	tristate "Realtek USB SD/MMC Card Interface Driver"
 	depends on MFD_RTSX_USB
+	depends on LEDS_CLASS
 	help
 	  Say Y here to include driver code to support SD/MMC card interface
 	  of Realtek RTS5129/39 series card reader

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