diff options
Diffstat (limited to 'drivers/firewire/sbp2.c')
| -rw-r--r-- | drivers/firewire/sbp2.c | 57 |
1 files changed, 17 insertions, 40 deletions
diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c index 17cef864506..a2715b20ede 100644 --- a/drivers/firewire/sbp2.c +++ b/drivers/firewire/sbp2.c @@ -159,7 +159,6 @@ struct sbp2_logical_unit { * and one struct Scsi_Host per sbp2_target. */ struct sbp2_target { - struct kref kref; struct fw_unit *unit; const char *bus_id; struct list_head lu_list; @@ -772,9 +771,8 @@ static int sbp2_lun2int(u16 lun) return scsilun_to_int(&eight_bytes_lun); } -static void sbp2_release_target(struct kref *kref) +static void sbp2_release_target(struct sbp2_target *tgt) { - struct sbp2_target *tgt = container_of(kref, struct sbp2_target, kref); struct sbp2_logical_unit *lu, *next; struct Scsi_Host *shost = container_of((void *)tgt, struct Scsi_Host, hostdata[0]); @@ -811,30 +809,12 @@ static void sbp2_release_target(struct kref *kref) scsi_remove_host(shost); fw_notify("released %s, target %d:0:0\n", tgt->bus_id, shost->host_no); - fw_unit_put(tgt->unit); scsi_host_put(shost); - fw_device_put(device); -} - -static void sbp2_target_get(struct sbp2_target *tgt) -{ - kref_get(&tgt->kref); -} - -static void sbp2_target_put(struct sbp2_target *tgt) -{ - kref_put(&tgt->kref, sbp2_release_target); } -/* - * Always get the target's kref when scheduling work on one its units. - * Each workqueue job is responsible to call sbp2_target_put() upon return. - */ static void sbp2_queue_work(struct sbp2_logical_unit *lu, unsigned long delay) { - sbp2_target_get(lu->tgt); - if (!queue_delayed_work(fw_workqueue, &lu->work, delay)) - sbp2_target_put(lu->tgt); + queue_delayed_work(fw_workqueue, &lu->work, delay); } /* @@ -877,7 +857,7 @@ static void sbp2_login(struct work_struct *work) int generation, node_id, local_node_id; if (fw_device_is_shutdown(device)) - goto out; + return; generation = device->generation; smp_rmb(); /* node IDs must not be older than generation */ @@ -899,7 +879,7 @@ static void sbp2_login(struct work_struct *work) /* Let any waiting I/O fail from now on. */ sbp2_unblock(lu->tgt); } - goto out; + return; } tgt->node_id = node_id; @@ -925,7 +905,8 @@ static void sbp2_login(struct work_struct *work) if (lu->has_sdev) { sbp2_cancel_orbs(lu); sbp2_conditionally_unblock(lu); - goto out; + + return; } if (lu->tgt->workarounds & SBP2_WORKAROUND_DELAY_INQUIRY) @@ -957,7 +938,8 @@ static void sbp2_login(struct work_struct *work) lu->has_sdev = true; scsi_device_put(sdev); sbp2_allow_block(lu); - goto out; + + return; out_logout_login: smp_rmb(); /* generation may have changed */ @@ -971,8 +953,6 @@ static void sbp2_login(struct work_struct *work) * lu->work already. Reset the work from reconnect to login. */ PREPARE_DELAYED_WORK(&lu->work, sbp2_login); - out: - sbp2_target_put(tgt); } static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry) @@ -1141,7 +1121,6 @@ static int sbp2_probe(struct device *dev) tgt = (struct sbp2_target *)shost->hostdata; dev_set_drvdata(&unit->device, tgt); tgt->unit = unit; - kref_init(&tgt->kref); INIT_LIST_HEAD(&tgt->lu_list); tgt->bus_id = dev_name(&unit->device); tgt->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4]; @@ -1154,9 +1133,6 @@ static int sbp2_probe(struct device *dev) if (scsi_add_host(shost, &unit->device) < 0) goto fail_shost_put; - fw_device_get(device); - fw_unit_get(unit); - /* implicit directory ID */ tgt->directory_id = ((unit->directory - device->config_rom) * 4 + CSR_CONFIG_ROM) & 0xffffff; @@ -1166,7 +1142,7 @@ static int sbp2_probe(struct device *dev) if (sbp2_scan_unit_dir(tgt, unit->directory, &model, &firmware_revision) < 0) - goto fail_tgt_put; + goto fail_release_target; sbp2_clamp_management_orb_timeout(tgt); sbp2_init_workarounds(tgt, model, firmware_revision); @@ -1183,10 +1159,11 @@ static int sbp2_probe(struct device *dev) /* Do the login in a workqueue so we can easily reschedule retries. */ list_for_each_entry(lu, &tgt->lu_list, link) sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5)); + return 0; - fail_tgt_put: - sbp2_target_put(tgt); + fail_release_target: + sbp2_release_target(tgt); return -ENOMEM; fail_shost_put: @@ -1203,7 +1180,8 @@ static int sbp2_remove(struct device *dev) list_for_each_entry(lu, &tgt->lu_list, link) cancel_delayed_work_sync(&lu->work); - sbp2_target_put(tgt); + sbp2_release_target(tgt); + return 0; } @@ -1216,7 +1194,7 @@ static void sbp2_reconnect(struct work_struct *work) int generation, node_id, local_node_id; if (fw_device_is_shutdown(device)) - goto out; + return; generation = device->generation; smp_rmb(); /* node IDs must not be older than generation */ @@ -1241,7 +1219,8 @@ static void sbp2_reconnect(struct work_struct *work) PREPARE_DELAYED_WORK(&lu->work, sbp2_login); } sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5)); - goto out; + + return; } tgt->node_id = node_id; @@ -1255,8 +1234,6 @@ static void sbp2_reconnect(struct work_struct *work) sbp2_agent_reset(lu); sbp2_cancel_orbs(lu); sbp2_conditionally_unblock(lu); - out: - sbp2_target_put(tgt); } static void sbp2_update(struct fw_unit *unit) |