This commit adds a kernel API to stop a couple of isochronous contexts for AMDTP streams. The API is not protected with any lock primitive. Callers should use this with enough lock against concurrent access.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/amdtp-stream.c | 16 ++++++++++++++++ sound/firewire/amdtp-stream.h | 5 +++++ 2 files changed, 21 insertions(+)
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c index 02077696fa77..31fc90f76443 100644 --- a/sound/firewire/amdtp-stream.c +++ b/sound/firewire/amdtp-stream.c @@ -1158,3 +1158,19 @@ void amdtp_domain_destroy(struct amdtp_domain *d) WARN_ON(!list_empty(&d->streams)); } EXPORT_SYMBOL_GPL(amdtp_domain_destroy); + +/** + * amdtp_domain_stop - stop sending packets for isoc context in the same domain. + * @d: the AMDTP domain to which the isoc contexts belong. + */ +void amdtp_domain_stop(struct amdtp_domain *d) +{ + struct amdtp_stream *s, *next; + + list_for_each_entry_safe(s, next, &d->streams, list) { + list_del(&s->list); + + amdtp_stream_stop(s); + } +} +EXPORT_SYMBOL_GPL(amdtp_domain_stop); diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h index 2378db4b4195..ab2a69180240 100644 --- a/sound/firewire/amdtp-stream.h +++ b/sound/firewire/amdtp-stream.h @@ -170,6 +170,9 @@ struct amdtp_stream { /* For backends to process data blocks. */ void *protocol; amdtp_stream_process_ctx_payloads_t process_ctx_payloads; + + // For domain. + struct list_head list; };
int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit, @@ -274,4 +277,6 @@ struct amdtp_domain { int amdtp_domain_init(struct amdtp_domain *d); void amdtp_domain_destroy(struct amdtp_domain *d);
+void amdtp_domain_stop(struct amdtp_domain *d); + #endif