[PATCH 3.19 109/177] ALSA: firewire-lib: remove reference counting

Greg Kroah-Hartman
2015-03-16T14:15:56Z

From: Takashi Sakamoto <o-takashi@sakamocchi.jp>

commit c6f224dc20ad959175c2dfec70b5a61c6503a793 upstream.

AMDTP helper functions increment/decrement reference counter for an
instance of FireWire unit, while it's complicated for each driver to
process error state.

In previous commit, each driver has the role of reference counting. This
commit removes this role from the helper function.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/firewire/amdtp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/sound/firewire/amdtp.c
+++ b/sound/firewire/amdtp.c
@@ -78,7 +78,7 @@ static void pcm_period_tasklet(unsigned
int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
enum amdtp_stream_direction dir, enum cip_flags flags)
{
- s->unit = fw_unit_get(unit);
+ s->unit = unit;
s->direction = dir;
s->flags = flags;
s->context = ERR_PTR(-1);
@@ -102,7 +102,6 @@ void amdtp_stream_destroy(struct amdtp_s
{
WARN_ON(amdtp_stream_running(s));
mutex_destroy(&s->mutex);
- fw_unit_put(s->unit);
}
EXPORT_SYMBOL(amdtp_stream_destroy);