Fixed the soft lockup of ALSA rtc-timer due to the wrong irq
handling in rtc_control().  The call of rtc_control() can be atomic.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>