RTC: Disable CONFIG_RTC_CLASS from being built as a module

The RTC subsystem has a number of accessors that are available via
include/linux/rtc.h. However many of these interfaces are not
available for use if CONFIG_RTC_CLASS=m.

So in order to support wider use of the RTC in the kernel, I'm
removing the tristate config option for a bool, so that code can
easily be conditionalized if the RTC class is present or not.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index e1878877399c42418e5b8d626337c285e3d9b12a..42891726ea7296ef867453e4423b9d4f0909fdad 100644 (file)
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -3,10 +3,10 @@
 #
 
 config RTC_LIB
-       tristate
+       bool
 
 menuconfig RTC_CLASS
-       tristate "Real Time Clock"
+       bool "Real Time Clock"
        default n
        depends on !S390
        select RTC_LIB
@@ -15,9 +15,6 @@ menuconfig RTC_CLASS
          be allowed to plug one or more RTCs to your system. You will
          probably want to enable one or more of the interfaces below.
 
-         This driver can also be built as a module. If so, the module
-         will be called rtc-core.
-
 if RTC_CLASS
 
 config RTC_HCTOSYS