diff options
| author |   Takashi Iwai <tiwai@suse.de> | 2019-12-13 17:30:05 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-12-14 18:56:06 +0100 |
| commit | 651bbb9d5161ae7170bc19fec893b8bf05fc590f (patch) | |
| tree | 5ecda3ce5f33ec56d809099e36b56a1320a72d02 /sound/hda/hdac_controller.c | |
| parent | ALSA: control: remove useless assignment in .info callback of PCM chmap element (diff) | |
| download | wireguard-linux-651bbb9d5161ae7170bc19fec893b8bf05fc590f.tar.xz wireguard-linux-651bbb9d5161ae7170bc19fec893b8bf05fc590f.zip | |
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.
Link: https://lore.kernel.org/r/20191213163005.19116-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/hdac_controller.c')
| -rw-r--r-- | sound/hda/hdac_controller.c | 1 |
1 files changed, 1 insertions, 0 deletions
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) { |