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ALSA: firewire-lib: add helper function to cancel context inner callback handler 

In callback handler of isochronous context for both direction, there're
common codes to cancel context.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
alistair/sunxi64-5.4-dsi
Takashi Sakamoto 2019-05-21 23:57:35 +09:00 committed by Takashi Iwai
parent d3d10a4a1b
commit fce9b013fe
1 changed files with 10 additions and 8 deletions
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18
sound/firewire/amdtp-stream.c
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@ -707,6 +707,14 @@ static inline u32 increment_cycle_count(u32 cycle, unsigned int addend)
return cycle;
}
static inline void cancel_stream(struct amdtp_stream *s)
{
s->packet_index = -1;
if (in_interrupt())
amdtp_stream_pcm_abort(s);
WRITE_ONCE(s->pcm_buffer_pointer, SNDRV_PCM_POS_XRUN);
}
static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
size_t header_length, void *header,
void *private_data)
@ -726,10 +734,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
for (i = 0; i < packets; ++i) {
cycle = increment_cycle_count(cycle, 1);
if (s->handle_packet(s, 0, cycle, i) < 0) {
s->packet_index = -1;
if (in_interrupt())
amdtp_stream_pcm_abort(s);
WRITE_ONCE(s->pcm_buffer_pointer, SNDRV_PCM_POS_XRUN);
cancel_stream(s);
return;
}
}
@ -779,10 +784,7 @@ static void in_stream_callback(struct fw_iso_context *context, u32 tstamp,
/* Queueing error or detecting invalid payload. */
if (i < packets) {
s->packet_index = -1;
if (in_interrupt())
amdtp_stream_pcm_abort(s);
WRITE_ONCE(s->pcm_buffer_pointer, SNDRV_PCM_POS_XRUN);
cancel_stream(s);
return;
}