mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-23 09:19:51 +00:00
Code Issues Releases Wiki Activity

ALSA: firewire-lib: obsolete macro for header of IT context

Browse source 
The header size parameter of 1394 OHCI IT context has no effect.
Besides the header size of queued packet is different from context
header.

This commit cleans codes relevant to these two headers.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2019-05-21 23:57:36 +09:00 committed by Takashi Iwai
parent fce9b013fe
commit df9160b914
1 changed files with 13 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
sound/firewire/amdtp-stream.c
View file

@ -57,7 +57,6 @@
#define QUEUE_LENGTH 48
#define IR_HEADER_SIZE 8 // For header and timestamp.
#define OUT_PACKET_HEADER_SIZE 0
#define HEADER_TSTAMP_MASK 0x0000ffff
static void pcm_period_tasklet(unsigned long data);
@ -428,8 +427,7 @@ static void pcm_period_tasklet(unsigned long data)
snd_pcm_period_elapsed(pcm);
}
static int queue_packet(struct amdtp_stream *s, unsigned int header_length,
unsigned int payload_length)
static int queue_packet(struct amdtp_stream *s, unsigned int payload_length)
{
struct fw_iso_packet p = {0};
int err = 0;
@ -439,7 +437,15 @@ static int queue_packet(struct amdtp_stream *s, unsigned int header_length,
p.interrupt = IS_ALIGNED(s->packet_index + 1, INTERRUPT_INTERVAL);
p.tag = s->tag;
p.header_length = header_length;
if (s->direction == AMDTP_IN_STREAM) {
// Queue one packet for IR context.
p.header_length = s->ctx_data.tx.ctx_header_size;
} else {
// No header for this packet.
p.header_length = 0;
}
if (payload_length > 0)
p.payload_length = payload_length;
else
@ -460,13 +466,12 @@ static int queue_packet(struct amdtp_stream *s, unsigned int header_length,
static inline int queue_out_packet(struct amdtp_stream *s,
unsigned int payload_length)
{
return queue_packet(s, OUT_PACKET_HEADER_SIZE, payload_length);
return queue_packet(s, payload_length);
}
static inline int queue_in_packet(struct amdtp_stream *s)
{
return queue_packet(s, s->ctx_data.tx.ctx_header_size,
s->ctx_data.tx.max_payload_length);
return queue_packet(s, s->ctx_data.tx.max_payload_length);
}
static int handle_out_packet(struct amdtp_stream *s,
@ -888,7 +893,7 @@ int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed)
} else {
dir = DMA_TO_DEVICE;
type = FW_ISO_CONTEXT_TRANSMIT;
ctx_header_size = OUT_PACKET_HEADER_SIZE;
ctx_header_size = 0; // No effect for IT context.
}
err = iso_packets_buffer_init(&s->buffer, s->unit, QUEUE_LENGTH,
amdtp_stream_get_max_payload(s), dir);