[alsa-devel] [PATCH] ALSA: hda: Comment about snd_hdac_bus_update_rirb() and spinlock

The call of snd_hdac_bus_update_rirb() needs the bus->reg_lock spinlock protection for concurrency. Comment about it more explicitly.

Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/hda/hdac_controller.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c index 01787081552d..b856184af37f 100644 --- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -181,6 +181,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_bus_send_cmd); * @bus: HD-audio core bus * * Usually called from interrupt handler. + * The caller needs bus->reg_lock spinlock before calling this. */ void snd_hdac_bus_update_rirb(struct hdac_bus *bus) {