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path: root/sound/firewire/isight.c
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Diffstat (limited to 'sound/firewire/isight.c')
-rw-r--r--sound/firewire/isight.c43
1 files changed, 20 insertions, 23 deletions
diff --git a/sound/firewire/isight.c b/sound/firewire/isight.c
index 58a5afefdc69..fd42e6b315e6 100644
--- a/sound/firewire/isight.c
+++ b/sound/firewire/isight.c
@@ -217,7 +217,7 @@ static void isight_packet(struct fw_iso_context *context, u32 cycle,
static int isight_connect(struct isight *isight)
{
- int ch, err, rcode, errors = 0;
+ int ch, err;
__be32 value;
retry_after_bus_reset:
@@ -230,27 +230,19 @@ retry_after_bus_reset:
}
value = cpu_to_be32(ch | (isight->device->max_speed << SPEED_SHIFT));
- for (;;) {
- rcode = fw_run_transaction(
- isight->device->card,
- TCODE_WRITE_QUADLET_REQUEST,
- isight->device->node_id,
- isight->resources.generation,
- isight->device->max_speed,
- isight->audio_base + REG_ISO_TX_CONFIG,
- &value, 4);
- if (rcode == RCODE_COMPLETE) {
- return 0;
- } else if (rcode == RCODE_GENERATION) {
- fw_iso_resources_free(&isight->resources);
- goto retry_after_bus_reset;
- } else if (rcode_is_permanent_error(rcode) || ++errors >= 3) {
- err = -EIO;
- goto err_resources;
- }
- msleep(5);
+ err = snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,
+ isight->audio_base + REG_ISO_TX_CONFIG,
+ &value, 4, FW_FIXED_GENERATION |
+ isight->resources.generation);
+ if (err == -EAGAIN) {
+ fw_iso_resources_free(&isight->resources);
+ goto retry_after_bus_reset;
+ } else if (err < 0) {
+ goto err_resources;
}
+ return 0;
+
err_resources:
fw_iso_resources_free(&isight->resources);
error:
@@ -315,17 +307,19 @@ static int isight_hw_params(struct snd_pcm_substream *substream,
static int reg_read(struct isight *isight, int offset, __be32 *value)
{
return snd_fw_transaction(isight->unit, TCODE_READ_QUADLET_REQUEST,
- isight->audio_base + offset, value, 4);
+ isight->audio_base + offset, value, 4, 0);
}
static int reg_write(struct isight *isight, int offset, __be32 value)
{
return snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,
- isight->audio_base + offset, &value, 4);
+ isight->audio_base + offset, &value, 4, 0);
}
static void isight_stop_streaming(struct isight *isight)
{
+ __be32 value;
+
if (!isight->context)
return;
@@ -333,7 +327,10 @@ static void isight_stop_streaming(struct isight *isight)
fw_iso_context_destroy(isight->context);
isight->context = NULL;
fw_iso_resources_free(&isight->resources);
- reg_write(isight, REG_AUDIO_ENABLE, 0);
+ value = 0;
+ snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,
+ isight->audio_base + REG_AUDIO_ENABLE,
+ &value, 4, FW_QUIET);
}
static int isight_hw_free(struct snd_pcm_substream *substream)