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| author | Clemens Ladisch <clemens@ladisch.de> | 2011-09-04 22:17:45 +0200 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2013-10-20 22:07:57 +0200 |
| commit | eadce07faa8e71d8a0fc7501a5167fb999200225 (patch) | |
| tree | 85c4eec811cd5e772def1d744ca6d41f134d101c /sound/firewire | |
| parent | ALSA: firewire: extend snd_fw_transaction() (diff) | |
| download | linux-eadce07faa8e71d8a0fc7501a5167fb999200225.tar.xz linux-eadce07faa8e71d8a0fc7501a5167fb999200225.zip | |
ALSA: dice: avoid superflous write at bus reset
When a bus reset happens, the enable register is automatically cleared,
so we do not need to clear it manually when stopping the stream.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound/firewire')
| -rw-r--r-- | sound/firewire/dice.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/firewire/dice.c b/sound/firewire/dice.c index 59d5ca4438b2..cfa98a83acb2 100644 --- a/sound/firewire/dice.c +++ b/sound/firewire/dice.c @@ -246,6 +246,9 @@ static void dice_enable_clear(struct dice *dice) { __be32 value; + if (!dice->global_enabled) + return; + value = 0; snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST, global_address(dice, GLOBAL_ENABLE), @@ -1009,6 +1012,8 @@ static void dice_bus_reset(struct fw_unit *unit) * manner. */ amdtp_out_stream_pcm_abort(&dice->stream); + + dice->global_enabled = false; dice_stream_stop_packets(dice); dice_owner_update(dice); |