On Fri, 20 Jan 2012 18:11:31 +1100 Stephen Rothwell [off-list ref] wrote:

Hi all,

After merging the final tree, today's linux-next build (s390 allmodconfig)
failed like this:

drivers/leds/leds-ot200.c: In function 'ot200_led_brightness_set':
drivers/leds/leds-ot200.c:114: error: implicit declaration of function 'outb'

Caused by commit 891b7aeff9fe ("leds: add led driver for Bachmann's ot200").

Like this?

--- a/drivers/leds/Kconfig~leds-add-led-driver-for-bachmanns-ot200-fix
+++ a/drivers/leds/Kconfig

@@ -405,7 +405,7 @@ config LEDS_MAX8997
 
 config LEDS_OT200
 	tristate "LED support for the Bachmann OT200"
-	depends on LEDS_CLASS
+	depends on LEDS_CLASS && HAS_IOMEM
 	help
 	  This option enables support for the LEDs on the Bachmann OT200.
 	  Say Y to enable LEDs on the Bachmann OT200.