diff options
Diffstat (limited to 'sound/firewire/motu/motu-command-dsp-message-parser.c')
| -rw-r--r-- | sound/firewire/motu/motu-command-dsp-message-parser.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sound/firewire/motu/motu-command-dsp-message-parser.c b/sound/firewire/motu/motu-command-dsp-message-parser.c index 6716074f8bc1..18689fcfb288 100644 --- a/sound/firewire/motu/motu-command-dsp-message-parser.c +++ b/sound/firewire/motu/motu-command-dsp-message-parser.c @@ -23,6 +23,7 @@ enum msg_parser_state { }; struct msg_parser { + spinlock_t lock; enum msg_parser_state state; unsigned int interval; unsigned int message_count; @@ -39,6 +40,7 @@ int snd_motu_command_dsp_message_parser_new(struct snd_motu *motu) parser = devm_kzalloc(&motu->card->card_dev, sizeof(*parser), GFP_KERNEL); if (!parser) return -ENOMEM; + spin_lock_init(&parser->lock); motu->message_parser = parser; return 0; @@ -83,8 +85,11 @@ void snd_motu_command_dsp_message_parser_parse(struct snd_motu *motu, const stru { struct msg_parser *parser = motu->message_parser; unsigned int interval = parser->interval; + unsigned long flags; int i; + spin_lock_irqsave(&parser->lock, flags); + for (i = 0; i < desc_count; ++i) { const struct pkt_desc *desc = descs + i; __be32 *buffer = desc->ctx_payload; @@ -157,4 +162,17 @@ void snd_motu_command_dsp_message_parser_parse(struct snd_motu *motu, const stru } } } + + spin_unlock_irqrestore(&parser->lock, flags); +} + +void snd_motu_command_dsp_message_parser_copy_meter(struct snd_motu *motu, + struct snd_firewire_motu_command_dsp_meter *meter) +{ + struct msg_parser *parser = motu->message_parser; + unsigned long flags; + + spin_lock_irqsave(&parser->lock, flags); + memcpy(meter, &parser->meter, sizeof(*meter)); + spin_unlock_irqrestore(&parser->lock, flags); } |