A new macro is added to describe the maximum number of cycles to accept cycle skip by jumbo payload quirk. Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx> --- sound/firewire/amdtp-stream.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c index b14c3922efb2..409274a532ed 100644 --- a/sound/firewire/amdtp-stream.c +++ b/sound/firewire/amdtp-stream.c @@ -64,6 +64,11 @@ #define IT_PKT_HEADER_SIZE_CIP 8 // For 2 CIP header. #define IT_PKT_HEADER_SIZE_NO_CIP 0 // Nothing. +// The initial firmware of OXFW970 can postpone transmission of packet during finishing +// asynchronous transaction. This module accepts 5 cycles to skip as maximum to avoid buffer +// overrun. Actual device can skip more, then this module stops the packet streaming. +#define IR_JUMBO_PAYLOAD_MAX_SKIP_CYCLES 5 + static void pcm_period_work(struct work_struct *work); /** @@ -316,7 +321,7 @@ unsigned int amdtp_stream_get_max_payload(struct amdtp_stream *s) unsigned int cip_header_size = 0; if (s->flags & CIP_JUMBO_PAYLOAD) - multiplier = 5; + multiplier = IR_JUMBO_PAYLOAD_MAX_SKIP_CYCLES; if (!(s->flags & CIP_NO_HEADER)) cip_header_size = sizeof(__be32) * 2; -- 2.27.0
