ALSA: Add a note on dependency of RTC stuff

Added a note on the dependency of old RTC stuff, which is exclusive
with the new RTC class drivers.
    http://bugme.linux-foundation.org/show_bug.cgi?id=11430

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 3 insertions, 0 deletions

diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 91f91c5cdb4e..66348c92f88d 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -108,6 +108,9 @@ config SND_RTCTIMER
           To compile this driver as a module, choose M here: the module
           will be called snd-rtctimer.
 
+          Note that this option is exclusive with the new RTC drivers
+          (CONFIG_RTC_CLASS) since this requires the old API.
+
 config SND_SEQ_RTCTIMER_DEFAULT
         bool "Use RTC as default sequencer timer"
         depends on SND_RTCTIMER && SND_SEQUENCER