diff options
Diffstat (limited to 'sound/firewire/cmp.c')
-rw-r--r-- | sound/firewire/cmp.c | 50 |
1 files changed, 21 insertions, 29 deletions
diff --git a/sound/firewire/cmp.c b/sound/firewire/cmp.c index 645cb0ba4293..efdbf585e404 100644 --- a/sound/firewire/cmp.c +++ b/sound/firewire/cmp.c @@ -48,9 +48,6 @@ static int pcr_modify(struct cmp_connection *c, int (*check)(struct cmp_connection *c, __be32 pcr), enum bus_reset_handling bus_reset_handling) { - struct fw_device *device = fw_parent_device(c->resources.unit); - int generation = c->resources.generation; - int rcode, errors = 0; __be32 old_arg, buffer[2]; int err; @@ -59,36 +56,31 @@ static int pcr_modify(struct cmp_connection *c, old_arg = buffer[0]; buffer[1] = modify(c, buffer[0]); - rcode = fw_run_transaction( - device->card, TCODE_LOCK_COMPARE_SWAP, - device->node_id, generation, device->max_speed, + err = snd_fw_transaction( + c->resources.unit, TCODE_LOCK_COMPARE_SWAP, CSR_REGISTER_BASE + CSR_IPCR(c->pcr_index), - buffer, 8); - - if (rcode == RCODE_COMPLETE) { - if (buffer[0] == old_arg) /* success? */ - break; - - if (check) { - err = check(c, buffer[0]); - if (err < 0) - return err; - } - } else if (rcode == RCODE_GENERATION) - goto bus_reset; - else if (rcode_is_permanent_error(rcode) || ++errors >= 3) - goto io_error; + buffer, 8, + FW_FIXED_GENERATION | c->resources.generation); + + if (err < 0) { + if (err == -EAGAIN && + bus_reset_handling == SUCCEED_ON_BUS_RESET) + err = 0; + return err; + } + + if (buffer[0] == old_arg) /* success? */ + break; + + if (check) { + err = check(c, buffer[0]); + if (err < 0) + return err; + } } c->last_pcr_value = buffer[1]; return 0; - -io_error: - cmp_error(c, "transaction failed: %s\n", fw_rcode_string(rcode)); - return -EIO; - -bus_reset: - return bus_reset_handling == ABORT_ON_BUS_RESET ? -EAGAIN : 0; } @@ -108,7 +100,7 @@ int cmp_connection_init(struct cmp_connection *c, err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST, CSR_REGISTER_BASE + CSR_IMPR, - &impr_be, 4); + &impr_be, 4, 0); if (err < 0) return err; impr = be32_to_cpu(impr_be); |