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| author | Clemens Ladisch <clemens@ladisch.de> | 2012-03-18 19:06:39 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2012-03-18 22:15:39 +0100 |
| commit | d1bbd20972936b9b178fda3eb1ec417cb27fdc01 (patch) | |
| tree | 5d2e29adbc6f0e8ad0dd07b7624e2ad07181303e /drivers/firewire/core-card.c | |
| parent | 18d627113b830cda80792e96b28341bcd41cf40c (diff) | |
| download | lwn-d1bbd20972936b9b178fda3eb1ec417cb27fdc01.tar.gz lwn-d1bbd20972936b9b178fda3eb1ec417cb27fdc01.zip | |
firewire: allow explicit flushing of iso packet completions
Extend the kernel and userspace APIs to allow reporting all currently
completed isochronous packets, even if the next interrupt packet has not
yet been reached. This is required to determine the status of the
packets at the end of a paused or stopped stream, and useful for more
precise synchronization of audio streams.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/core-card.c')
| -rw-r--r-- | drivers/firewire/core-card.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c index b19db0f6a254..cc595eba7ba9 100644 --- a/drivers/firewire/core-card.c +++ b/drivers/firewire/core-card.c @@ -650,6 +650,11 @@ static void dummy_flush_queue_iso(struct fw_iso_context *ctx) { } +static int dummy_flush_iso_completions(struct fw_iso_context *ctx) +{ + return -ENODEV; +} + static const struct fw_card_driver dummy_driver_template = { .read_phy_reg = dummy_read_phy_reg, .update_phy_reg = dummy_update_phy_reg, @@ -662,6 +667,7 @@ static const struct fw_card_driver dummy_driver_template = { .set_iso_channels = dummy_set_iso_channels, .queue_iso = dummy_queue_iso, .flush_queue_iso = dummy_flush_queue_iso, + .flush_iso_completions = dummy_flush_iso_completions, }; void fw_card_release(struct kref *kref) |