diff options
Diffstat (limited to 'sound/firewire/amdtp-stream.c')
| -rw-r--r-- | sound/firewire/amdtp-stream.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c index 172addba7aab..08fd61a06e2e 100644 --- a/sound/firewire/amdtp-stream.c +++ b/sound/firewire/amdtp-stream.c @@ -495,7 +495,7 @@ static unsigned int compute_syt_offset(unsigned int syt, unsigned int cycle, static unsigned int calculate_cached_cycle_count(struct amdtp_stream *s, unsigned int head) { const unsigned int cache_size = s->ctx_data.tx.cache.size; - unsigned int cycles = s->ctx_data.tx.cache.tail; + unsigned int cycles = s->ctx_data.tx.cache.pos; if (cycles < head) cycles += cache_size; @@ -509,12 +509,12 @@ static void cache_seq(struct amdtp_stream *s, const struct pkt_desc *descs, unsi const unsigned int transfer_delay = s->transfer_delay; const unsigned int cache_size = s->ctx_data.tx.cache.size; struct seq_desc *cache = s->ctx_data.tx.cache.descs; - unsigned int cache_tail = s->ctx_data.tx.cache.tail; + unsigned int cache_pos = s->ctx_data.tx.cache.pos; bool aware_syt = !(s->flags & CIP_UNAWARE_SYT); int i; for (i = 0; i < desc_count; ++i) { - struct seq_desc *dst = cache + cache_tail; + struct seq_desc *dst = cache + cache_pos; const struct pkt_desc *src = descs + i; if (aware_syt && src->syt != CIP_SYT_NO_INFO) @@ -523,10 +523,10 @@ static void cache_seq(struct amdtp_stream *s, const struct pkt_desc *descs, unsi dst->syt_offset = CIP_SYT_NO_INFO; dst->data_blocks = src->data_blocks; - cache_tail = (cache_tail + 1) % cache_size; + cache_pos = (cache_pos + 1) % cache_size; } - s->ctx_data.tx.cache.tail = cache_tail; + s->ctx_data.tx.cache.pos = cache_pos; } static void pool_ideal_seq_descs(struct amdtp_stream *s, struct seq_desc *descs, unsigned int size, @@ -881,11 +881,9 @@ static inline u32 compute_ohci_it_cycle(const __be32 ctx_header_tstamp, return increment_ohci_cycle_count(cycle, queue_size); } -static int generate_device_pkt_descs(struct amdtp_stream *s, - struct pkt_desc *descs, - const __be32 *ctx_header, - unsigned int packets, - unsigned int *desc_count) +static int generate_tx_packet_descs(struct amdtp_stream *s, struct pkt_desc *descs, + const __be32 *ctx_header, unsigned int packet_count, + unsigned int *desc_count) { unsigned int next_cycle = s->next_cycle; unsigned int dbc = s->data_block_counter; @@ -895,7 +893,7 @@ static int generate_device_pkt_descs(struct amdtp_stream *s, int err; *desc_count = 0; - for (i = 0; i < packets; ++i) { + for (i = 0; i < packet_count; ++i) { struct pkt_desc *desc = descs + *desc_count; unsigned int cycle; bool lost; @@ -1199,7 +1197,7 @@ static void process_tx_packets(struct fw_iso_context *context, u32 tstamp, size_ { struct amdtp_stream *s = private_data; __be32 *ctx_header = header; - unsigned int packets; + unsigned int packet_count; unsigned int desc_count; int i; int err; @@ -1208,10 +1206,10 @@ static void process_tx_packets(struct fw_iso_context *context, u32 tstamp, size_ return; // Calculate the number of packets in buffer and check XRUN. - packets = header_length / s->ctx_data.tx.ctx_header_size; + packet_count = header_length / s->ctx_data.tx.ctx_header_size; desc_count = 0; - err = generate_device_pkt_descs(s, s->pkt_descs, ctx_header, packets, &desc_count); + err = generate_tx_packet_descs(s, s->pkt_descs, ctx_header, packet_count, &desc_count); if (err < 0) { if (err != -EAGAIN) { cancel_stream(s); @@ -1226,7 +1224,7 @@ static void process_tx_packets(struct fw_iso_context *context, u32 tstamp, size_ cache_seq(s, s->pkt_descs, desc_count); } - for (i = 0; i < packets; ++i) { + for (i = 0; i < packet_count; ++i) { struct fw_iso_packet params = {0}; if (queue_in_packet(s, ¶ms) < 0) { @@ -1611,7 +1609,7 @@ static int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed, // possible to cache much unexpectedly. s->ctx_data.tx.cache.size = max_t(unsigned int, s->syt_interval * 2, queue_size * 3 / 2); - s->ctx_data.tx.cache.tail = 0; + s->ctx_data.tx.cache.pos = 0; s->ctx_data.tx.cache.descs = kcalloc(s->ctx_data.tx.cache.size, sizeof(*s->ctx_data.tx.cache.descs), GFP_KERNEL); if (!s->ctx_data.tx.cache.descs) { |