diff options
Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_scsih.c')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_scsih.c | 605 |
1 files changed, 434 insertions, 171 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 3f26147bbc64..0ad09b2bff9c 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -79,7 +79,8 @@ static int _scsih_scan_finished(struct Scsi_Host *shost, unsigned long time); /* global parameters */ LIST_HEAD(mpt2sas_ioc_list); - +/* global ioc lock for list operations */ +DEFINE_SPINLOCK(gioc_lock); /* local parameters */ static u8 scsi_io_cb_idx = -1; static u8 tm_cb_idx = -1; @@ -176,9 +177,37 @@ struct fw_event_work { u8 VP_ID; u8 ignore; u16 event; + struct kref refcount; char event_data[0] __aligned(4); }; +static void fw_event_work_free(struct kref *r) +{ + kfree(container_of(r, struct fw_event_work, refcount)); +} + +static void fw_event_work_get(struct fw_event_work *fw_work) +{ + kref_get(&fw_work->refcount); +} + +static void fw_event_work_put(struct fw_event_work *fw_work) +{ + kref_put(&fw_work->refcount, fw_event_work_free); +} + +static struct fw_event_work *alloc_fw_event_work(int len) +{ + struct fw_event_work *fw_event; + + fw_event = kzalloc(sizeof(*fw_event) + len, GFP_ATOMIC); + if (!fw_event) + return NULL; + + kref_init(&fw_event->refcount); + return fw_event; +} + /* raid transport support */ static struct raid_template *mpt2sas_raid_template; @@ -293,8 +322,10 @@ _scsih_set_debug_level(const char *val, struct kernel_param *kp) return ret; printk(KERN_INFO "setting logging_level(0x%08x)\n", logging_level); + spin_lock(&gioc_lock); list_for_each_entry(ioc, &mpt2sas_ioc_list, list) ioc->logging_level = logging_level; + spin_unlock(&gioc_lock); return 0; } module_param_call(logging_level, _scsih_set_debug_level, param_get_int, @@ -526,8 +557,61 @@ _scsih_determine_boot_device(struct MPT2SAS_ADAPTER *ioc, } } +static struct _sas_device * +__mpt2sas_get_sdev_from_target(struct MPT2SAS_ADAPTER *ioc, + struct MPT2SAS_TARGET *tgt_priv) +{ + struct _sas_device *ret; + + assert_spin_locked(&ioc->sas_device_lock); + + ret = tgt_priv->sdev; + if (ret) + sas_device_get(ret); + + return ret; +} + +static struct _sas_device * +mpt2sas_get_sdev_from_target(struct MPT2SAS_ADAPTER *ioc, + struct MPT2SAS_TARGET *tgt_priv) +{ + struct _sas_device *ret; + unsigned long flags; + + spin_lock_irqsave(&ioc->sas_device_lock, flags); + ret = __mpt2sas_get_sdev_from_target(ioc, tgt_priv); + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + + return ret; +} + + +struct _sas_device * +__mpt2sas_get_sdev_by_addr(struct MPT2SAS_ADAPTER *ioc, + u64 sas_address) +{ + struct _sas_device *sas_device; + + assert_spin_locked(&ioc->sas_device_lock); + + list_for_each_entry(sas_device, &ioc->sas_device_list, list) + if (sas_device->sas_address == sas_address) + goto found_device; + + list_for_each_entry(sas_device, &ioc->sas_device_init_list, list) + if (sas_device->sas_address == sas_address) + goto found_device; + + return NULL; + +found_device: + sas_device_get(sas_device); + return sas_device; +} + /** - * mpt2sas_scsih_sas_device_find_by_sas_address - sas device search + * mpt2sas_get_sdev_by_addr - sas device search * @ioc: per adapter object * @sas_address: sas address * Context: Calling function should acquire ioc->sas_device_lock @@ -536,24 +620,44 @@ _scsih_determine_boot_device(struct MPT2SAS_ADAPTER *ioc, * object. */ struct _sas_device * -mpt2sas_scsih_sas_device_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc, +mpt2sas_get_sdev_by_addr(struct MPT2SAS_ADAPTER *ioc, u64 sas_address) { struct _sas_device *sas_device; + unsigned long flags; + + spin_lock_irqsave(&ioc->sas_device_lock, flags); + sas_device = __mpt2sas_get_sdev_by_addr(ioc, + sas_address); + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + + return sas_device; +} + +static struct _sas_device * +__mpt2sas_get_sdev_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle) +{ + struct _sas_device *sas_device; + + assert_spin_locked(&ioc->sas_device_lock); list_for_each_entry(sas_device, &ioc->sas_device_list, list) - if (sas_device->sas_address == sas_address) - return sas_device; + if (sas_device->handle == handle) + goto found_device; list_for_each_entry(sas_device, &ioc->sas_device_init_list, list) - if (sas_device->sas_address == sas_address) - return sas_device; + if (sas_device->handle == handle) + goto found_device; return NULL; + +found_device: + sas_device_get(sas_device); + return sas_device; } /** - * _scsih_sas_device_find_by_handle - sas device search + * mpt2sas_get_sdev_by_handle - sas device search * @ioc: per adapter object * @handle: sas device handle (assigned by firmware) * Context: Calling function should acquire ioc->sas_device_lock @@ -562,19 +666,16 @@ mpt2sas_scsih_sas_device_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc, * object. */ static struct _sas_device * -_scsih_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle) +mpt2sas_get_sdev_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle) { struct _sas_device *sas_device; + unsigned long flags; - list_for_each_entry(sas_device, &ioc->sas_device_list, list) - if (sas_device->handle == handle) - return sas_device; - - list_for_each_entry(sas_device, &ioc->sas_device_init_list, list) - if (sas_device->handle == handle) - return sas_device; + spin_lock_irqsave(&ioc->sas_device_lock, flags); + sas_device = __mpt2sas_get_sdev_by_handle(ioc, handle); + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return NULL; + return sas_device; } /** @@ -583,7 +684,7 @@ _scsih_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle) * @sas_device: the sas_device object * Context: This function will acquire ioc->sas_device_lock. * - * Removing object and freeing associated memory from the ioc->sas_device_list. + * If sas_device is on the list, remove it and decrement its reference count. */ static void _scsih_sas_device_remove(struct MPT2SAS_ADAPTER *ioc, @@ -594,9 +695,15 @@ _scsih_sas_device_remove(struct MPT2SAS_ADAPTER *ioc, if (!sas_device) return; + /* + * The lock serializes access to the list, but we still need to verify + * that nobody removed the entry while we were waiting on the lock. + */ spin_lock_irqsave(&ioc->sas_device_lock, flags); - list_del(&sas_device->list); - kfree(sas_device); + if (!list_empty(&sas_device->list)) { + list_del_init(&sas_device->list); + sas_device_put(sas_device); + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } @@ -620,6 +727,7 @@ _scsih_sas_device_add(struct MPT2SAS_ADAPTER *ioc, sas_device->handle, (unsigned long long)sas_device->sas_address)); spin_lock_irqsave(&ioc->sas_device_lock, flags); + sas_device_get(sas_device); list_add_tail(&sas_device->list, &ioc->sas_device_list); spin_unlock_irqrestore(&ioc->sas_device_lock, flags); @@ -659,6 +767,7 @@ _scsih_sas_device_init_add(struct MPT2SAS_ADAPTER *ioc, sas_device->handle, (unsigned long long)sas_device->sas_address)); spin_lock_irqsave(&ioc->sas_device_lock, flags); + sas_device_get(sas_device); list_add_tail(&sas_device->list, &ioc->sas_device_init_list); _scsih_determine_boot_device(ioc, sas_device, 0); spin_unlock_irqrestore(&ioc->sas_device_lock, flags); @@ -1208,12 +1317,15 @@ _scsih_change_queue_depth(struct scsi_device *sdev, int qdepth) goto not_sata; if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) goto not_sata; + spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - sas_device_priv_data->sas_target->sas_address); - if (sas_device && sas_device->device_info & - MPI2_SAS_DEVICE_INFO_SATA_DEVICE) - max_depth = MPT2SAS_SATA_QUEUE_DEPTH; + sas_device = __mpt2sas_get_sdev_from_target(ioc, sas_target_priv_data); + if (sas_device) { + if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE) + max_depth = MPT2SAS_SATA_QUEUE_DEPTH; + + sas_device_put(sas_device); + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); not_sata: @@ -1271,18 +1383,20 @@ _scsih_target_alloc(struct scsi_target *starget) /* sas/sata devices */ spin_lock_irqsave(&ioc->sas_device_lock, flags); rphy = dev_to_rphy(starget->dev.parent); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = __mpt2sas_get_sdev_by_addr(ioc, rphy->identify.sas_address); if (sas_device) { sas_target_priv_data->handle = sas_device->handle; sas_target_priv_data->sas_address = sas_device->sas_address; + sas_target_priv_data->sdev = sas_device; sas_device->starget = starget; sas_device->id = starget->id; sas_device->channel = starget->channel; if (test_bit(sas_device->handle, ioc->pd_handles)) sas_target_priv_data->flags |= MPT_TARGET_FLAGS_RAID_COMPONENT; + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); @@ -1324,13 +1438,21 @@ _scsih_target_destroy(struct scsi_target *starget) spin_lock_irqsave(&ioc->sas_device_lock, flags); rphy = dev_to_rphy(starget->dev.parent); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - rphy->identify.sas_address); + sas_device = __mpt2sas_get_sdev_from_target(ioc, sas_target_priv_data); if (sas_device && (sas_device->starget == starget) && (sas_device->id == starget->id) && (sas_device->channel == starget->channel)) sas_device->starget = NULL; + if (sas_device) { + /* + * Corresponding get() is in _scsih_target_alloc() + */ + sas_target_priv_data->sdev = NULL; + sas_device_put(sas_device); + + sas_device_put(sas_device); + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); out: @@ -1386,7 +1508,7 @@ _scsih_slave_alloc(struct scsi_device *sdev) if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) { spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = __mpt2sas_get_sdev_by_addr(ioc, sas_target_priv_data->sas_address); if (sas_device && (sas_device->starget == NULL)) { sdev_printk(KERN_INFO, sdev, @@ -1394,6 +1516,10 @@ _scsih_slave_alloc(struct scsi_device *sdev) __func__, __LINE__); sas_device->starget = starget; } + + if (sas_device) + sas_device_put(sas_device); + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } @@ -1428,10 +1554,13 @@ _scsih_slave_destroy(struct scsi_device *sdev) if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) { spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - sas_target_priv_data->sas_address); + sas_device = __mpt2sas_get_sdev_from_target(ioc, + sas_target_priv_data); if (sas_device && !sas_target_priv_data->num_luns) sas_device->starget = NULL; + + if (sas_device) + sas_device_put(sas_device); spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } @@ -2078,7 +2207,7 @@ _scsih_slave_configure(struct scsi_device *sdev) } spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = __mpt2sas_get_sdev_by_addr(ioc, sas_device_priv_data->sas_target->sas_address); if (!sas_device) { spin_unlock_irqrestore(&ioc->sas_device_lock, flags); @@ -2112,17 +2241,18 @@ _scsih_slave_configure(struct scsi_device *sdev) (unsigned long long) sas_device->enclosure_logical_id, sas_device->slot); + sas_device_put(sas_device); spin_unlock_irqrestore(&ioc->sas_device_lock, flags); if (!ssp_target) _scsih_display_sata_capabilities(ioc, handle, sdev); - _scsih_change_queue_depth(sdev, qdepth); if (ssp_target) { sas_read_port_mode_page(sdev); _scsih_enable_tlr(ioc, sdev); } + return 0; } @@ -2509,8 +2639,7 @@ _scsih_tm_display_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd) device_str, (unsigned long long)priv_target->sas_address); } else { spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - priv_target->sas_address); + sas_device = __mpt2sas_get_sdev_from_target(ioc, priv_target); if (sas_device) { if (priv_target->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) { @@ -2529,6 +2658,8 @@ _scsih_tm_display_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd) "enclosure_logical_id(0x%016llx), slot(%d)\n", (unsigned long long)sas_device->enclosure_logical_id, sas_device->slot); + + sas_device_put(sas_device); } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } @@ -2604,12 +2735,12 @@ _scsih_dev_reset(struct scsi_cmnd *scmd) { struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host); struct MPT2SAS_DEVICE *sas_device_priv_data; - struct _sas_device *sas_device; - unsigned long flags; + struct _sas_device *sas_device = NULL; u16 handle; int r; struct scsi_target *starget = scmd->device->sdev_target; + struct MPT2SAS_TARGET *target_priv_data = starget->hostdata; starget_printk(KERN_INFO, starget, "attempting device reset! " "scmd(%p)\n", scmd); @@ -2629,12 +2760,10 @@ _scsih_dev_reset(struct scsi_cmnd *scmd) handle = 0; if (sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) { - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, - sas_device_priv_data->sas_target->handle); + sas_device = mpt2sas_get_sdev_from_target(ioc, + target_priv_data); if (sas_device) handle = sas_device->volume_handle; - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } else handle = sas_device_priv_data->sas_target->handle; @@ -2651,6 +2780,10 @@ _scsih_dev_reset(struct scsi_cmnd *scmd) out: sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n", ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); + + if (sas_device) + sas_device_put(sas_device); + return r; } @@ -2665,11 +2798,11 @@ _scsih_target_reset(struct scsi_cmnd *scmd) { struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host); struct MPT2SAS_DEVICE *sas_device_priv_data; - struct _sas_device *sas_device; - unsigned long flags; + struct _sas_device *sas_device = NULL; u16 handle; int r; struct scsi_target *starget = scmd->device->sdev_target; + struct MPT2SAS_TARGET *target_priv_data = starget->hostdata; starget_printk(KERN_INFO, starget, "attempting target reset! " "scmd(%p)\n", scmd); @@ -2689,12 +2822,10 @@ _scsih_target_reset(struct scsi_cmnd *scmd) handle = 0; if (sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) { - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, - sas_device_priv_data->sas_target->handle); + sas_device = mpt2sas_get_sdev_from_target(ioc, + target_priv_data); if (sas_device) handle = sas_device->volume_handle; - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } else handle = sas_device_priv_data->sas_target->handle; @@ -2711,6 +2842,10 @@ _scsih_target_reset(struct scsi_cmnd *scmd) out: starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n", ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); + + if (sas_device) + sas_device_put(sas_device); + return r; } @@ -2768,36 +2903,39 @@ _scsih_fw_event_add(struct MPT2SAS_ADAPTER *ioc, struct fw_event_work *fw_event) return; spin_lock_irqsave(&ioc->fw_event_lock, flags); + fw_event_work_get(fw_event); list_add_tail(&fw_event->list, &ioc->fw_event_list); INIT_DELAYED_WORK(&fw_event->delayed_work, _firmware_event_work); + fw_event_work_get(fw_event); queue_delayed_work(ioc->firmware_event_thread, &fw_event->delayed_work, 0); spin_unlock_irqrestore(&ioc->fw_event_lock, flags); } /** - * _scsih_fw_event_free - delete fw_event + * _scsih_fw_event_del_from_list - delete fw_event from the list * @ioc: per adapter object * @fw_event: object describing the event * Context: This function will acquire ioc->fw_event_lock. * - * This removes firmware event object from link list, frees associated memory. + * If the fw_event is on the fw_event_list, remove it and do a put. * * Return nothing. */ static void -_scsih_fw_event_free(struct MPT2SAS_ADAPTER *ioc, struct fw_event_work +_scsih_fw_event_del_from_list(struct MPT2SAS_ADAPTER *ioc, struct fw_event_work *fw_event) { unsigned long flags; spin_lock_irqsave(&ioc->fw_event_lock, flags); - list_del(&fw_event->list); - kfree(fw_event); + if (!list_empty(&fw_event->list)) { + list_del_init(&fw_event->list); + fw_event_work_put(fw_event); + } spin_unlock_irqrestore(&ioc->fw_event_lock, flags); } - /** * _scsih_error_recovery_delete_devices - remove devices not responding * @ioc: per adapter object @@ -2812,13 +2950,14 @@ _scsih_error_recovery_delete_devices(struct MPT2SAS_ADAPTER *ioc) if (ioc->is_driver_loading) return; - fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC); + fw_event = alloc_fw_event_work(0); if (!fw_event) return; fw_event->event = MPT2SAS_REMOVE_UNRESPONDING_DEVICES; fw_event->ioc = ioc; _scsih_fw_event_add(ioc, fw_event); + fw_event_work_put(fw_event); } /** @@ -2832,12 +2971,29 @@ mpt2sas_port_enable_complete(struct MPT2SAS_ADAPTER *ioc) { struct fw_event_work *fw_event; - fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC); + fw_event = alloc_fw_event_work(0); if (!fw_event) return; fw_event->event = MPT2SAS_PORT_ENABLE_COMPLETE; fw_event->ioc = ioc; _scsih_fw_event_add(ioc, fw_event); + fw_event_work_put(fw_event); +} + +static struct fw_event_work *dequeue_next_fw_event(struct MPT2SAS_ADAPTER *ioc) +{ + unsigned long flags; + struct fw_event_work *fw_event = NULL; + + spin_lock_irqsave(&ioc->fw_event_lock, flags); + if (!list_empty(&ioc->fw_event_list)) { + fw_event = list_first_entry(&ioc->fw_event_list, + struct fw_event_work, list); + list_del_init(&fw_event->list); + } + spin_unlock_irqrestore(&ioc->fw_event_lock, flags); + + return fw_event; } /** @@ -2852,17 +3008,25 @@ mpt2sas_port_enable_complete(struct MPT2SAS_ADAPTER *ioc) static void _scsih_fw_event_cleanup_queue(struct MPT2SAS_ADAPTER *ioc) { - struct fw_event_work *fw_event, *next; + struct fw_event_work *fw_event; if (list_empty(&ioc->fw_event_list) || !ioc->firmware_event_thread || in_interrupt()) return; - list_for_each_entry_safe(fw_event, next, &ioc->fw_event_list, list) { - if (cancel_delayed_work_sync(&fw_event->delayed_work)) { - _scsih_fw_event_free(ioc, fw_event); - continue; - } + while ((fw_event = dequeue_next_fw_event(ioc))) { + /* + * Wait on the fw_event to complete. If this returns 1, then + * the event was never executed, and we need a put for the + * reference the delayed_work had on the fw_event. + * + * If it did execute, we wait for it to finish, and the put will + * happen from _firmware_event_work() + */ + if (cancel_delayed_work_sync(&fw_event->delayed_work)) + fw_event_work_put(fw_event); + + fw_event_work_put(fw_event); } } @@ -3002,15 +3166,15 @@ _scsih_block_io_to_children_attached_to_ex(struct MPT2SAS_ADAPTER *ioc, list_for_each_entry(mpt2sas_port, &sas_expander->sas_port_list, port_list) { - if (mpt2sas_port->remote_identify.device_type == - SAS_END_DEVICE) { + if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE) { spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = - mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - mpt2sas_port->remote_identify.sas_address); - if (sas_device) + sas_device = __mpt2sas_get_sdev_by_addr(ioc, + mpt2sas_port->remote_identify.sas_address); + if (sas_device) { set_bit(sas_device->handle, - ioc->blocking_handles); + ioc->blocking_handles); + sas_device_put(sas_device); + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } } @@ -3080,7 +3244,7 @@ _scsih_tm_tr_send(struct MPT2SAS_ADAPTER *ioc, u16 handle) { Mpi2SCSITaskManagementRequest_t *mpi_request; u16 smid; - struct _sas_device *sas_device; + struct _sas_device *sas_device = NULL; struct MPT2SAS_TARGET *sas_target_priv_data = NULL; u64 sas_address = 0; unsigned long flags; @@ -3110,7 +3274,7 @@ _scsih_tm_tr_send(struct MPT2SAS_ADAPTER *ioc, u16 handle) return; spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); + sas_device = __mpt2sas_get_sdev_by_handle(ioc, handle); if (sas_device && sas_device->starget && sas_device->starget->hostdata) { sas_target_priv_data = sas_device->starget->hostdata; @@ -3131,14 +3295,14 @@ _scsih_tm_tr_send(struct MPT2SAS_ADAPTER *ioc, u16 handle) if (!smid) { delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC); if (!delayed_tr) - return; + goto out; INIT_LIST_HEAD(&delayed_tr->list); delayed_tr->handle = handle; list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list); dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "DELAYED:tr:handle(0x%04x), (open)\n", ioc->name, handle)); - return; + goto out; } dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "tr_send:handle(0x%04x), " @@ -3150,6 +3314,9 @@ _scsih_tm_tr_send(struct MPT2SAS_ADAPTER *ioc, u16 handle) mpi_request->DevHandle = cpu_to_le16(handle); mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET; mpt2sas_base_put_smid_hi_priority(ioc, smid); +out: + if (sas_device) + sas_device_put(sas_device); } @@ -4068,7 +4235,6 @@ _scsih_scsi_ioc_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, char *desc_scsi_state = ioc->tmp_string; u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo); struct _sas_device *sas_device = NULL; - unsigned long flags; struct scsi_target *starget = scmd->device->sdev_target; struct MPT2SAS_TARGET *priv_target = starget->hostdata; char *device_str = NULL; @@ -4200,9 +4366,7 @@ _scsih_scsi_ioc_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, printk(MPT2SAS_WARN_FMT "\t%s wwid(0x%016llx)\n", ioc->name, device_str, (unsigned long long)priv_target->sas_address); } else { - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - priv_target->sas_address); + sas_device = mpt2sas_get_sdev_from_target(ioc, priv_target); if (sas_device) { printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), " "phy(%d)\n", ioc->name, sas_device->sas_address, @@ -4211,8 +4375,9 @@ _scsih_scsi_ioc_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, "\tenclosure_logical_id(0x%016llx), slot(%d)\n", ioc->name, sas_device->enclosure_logical_id, sas_device->slot); + + sas_device_put(sas_device); } - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); } printk(MPT2SAS_WARN_FMT "\thandle(0x%04x), ioc_status(%s)(0x%04x), " @@ -4259,7 +4424,7 @@ _scsih_turn_on_pfa_led(struct MPT2SAS_ADAPTER *ioc, u16 handle) Mpi2SepRequest_t mpi_request; struct _sas_device *sas_device; - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); + sas_device = mpt2sas_get_sdev_by_handle(ioc, handle); if (!sas_device) return; @@ -4274,7 +4439,7 @@ _scsih_turn_on_pfa_led(struct MPT2SAS_ADAPTER *ioc, u16 handle) &mpi_request)) != 0) { printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__, __func__); - return; + goto out; } sas_device->pfa_led_on = 1; @@ -4284,8 +4449,10 @@ _scsih_turn_on_pfa_led(struct MPT2SAS_ADAPTER *ioc, u16 handle) "enclosure_processor: ioc_status (0x%04x), loginfo(0x%08x)\n", ioc->name, le16_to_cpu(mpi_reply.IOCStatus), le32_to_cpu(mpi_reply.IOCLogInfo))); - return; + goto out; } +out: + sas_device_put(sas_device); } /** @@ -4340,13 +4507,14 @@ _scsih_send_event_to_turn_on_pfa_led(struct MPT2SAS_ADAPTER *ioc, u16 handle) { struct fw_event_work *fw_event; - fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC); + fw_event = alloc_fw_event_work(0); if (!fw_event) return; fw_event->event = MPT2SAS_TURN_ON_PFA_LED; fw_event->device_handle = handle; fw_event->ioc = ioc; _scsih_fw_event_add(ioc, fw_event); + fw_event_work_put(fw_event); } /** @@ -4370,19 +4538,17 @@ _scsih_smart_predicted_fault(struct MPT2SAS_ADAPTER *ioc, u16 handle) /* only handle non-raid devices */ spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); + sas_device = __mpt2sas_get_sdev_by_handle(ioc, handle); if (!sas_device) { - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; + goto out_unlock; } starget = sas_device->starget; sas_target_priv_data = starget->hostdata; if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) || - ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))) { - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; - } + ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))) + goto out_unlock; + starget_printk(KERN_WARNING, starget, "predicted fault\n"); spin_unlock_irqrestore(&ioc->sas_device_lock, flags); @@ -4396,7 +4562,7 @@ _scsih_smart_predicted_fault(struct MPT2SAS_ADAPTER *ioc, u16 handle) if (!event_reply) { printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__, __func__); - return; + goto out; } event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION; @@ -4413,6 +4579,14 @@ _scsih_smart_predicted_fault(struct MPT2SAS_ADAPTER *ioc, u16 handle) event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address); mpt2sas_ctl_add_to_event_log(ioc, event_reply); kfree(event_reply); +out: + if (sas_device) + sas_device_put(sas_device); + return; + +out_unlock: + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + goto out; } /** @@ -5148,14 +5322,13 @@ _scsih_check_device(struct MPT2SAS_ADAPTER *ioc, u16 handle) spin_lock_irqsave(&ioc->sas_device_lock, flags); sas_address = le64_to_cpu(sas_device_pg0.SASAddress); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = __mpt2sas_get_sdev_by_addr(ioc, sas_address); if (!sas_device) { printk(MPT2SAS_ERR_FMT "device is not present " "handle(0x%04x), no sas_device!!!\n", ioc->name, handle); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; + goto out_unlock; } if (unlikely(sas_device->handle != handle)) { @@ -5172,19 +5345,24 @@ _scsih_check_device(struct MPT2SAS_ADAPTER *ioc, u16 handle) MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) { printk(MPT2SAS_ERR_FMT "device is not present " "handle(0x%04x), flags!!!\n", ioc->name, handle); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; + goto out_unlock; } /* check if there were any issues with discovery */ if (_scsih_check_access_status(ioc, sas_address, handle, - sas_device_pg0.AccessStatus)) { - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; - } + sas_device_pg0.AccessStatus)) + goto out_unlock; + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); _scsih_ublock_io_device(ioc, sas_address); + if (sas_device) + sas_device_put(sas_device); + return; +out_unlock: + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + if (sas_device) + sas_device_put(sas_device); } /** @@ -5208,7 +5386,6 @@ _scsih_add_device(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 phy_num, u8 is_pd) u32 ioc_status; __le64 sas_address; u32 device_info; - unsigned long flags; if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) { @@ -5250,14 +5427,13 @@ _scsih_add_device(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 phy_num, u8 is_pd) return -1; } - - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = mpt2sas_get_sdev_by_addr(ioc, sas_address); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - if (sas_device) + if (sas_device) { + sas_device_put(sas_device); return 0; + } sas_device = kzalloc(sizeof(struct _sas_device), GFP_KERNEL); @@ -5267,6 +5443,7 @@ _scsih_add_device(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 phy_num, u8 is_pd) return -1; } + kref_init(&sas_device->refcount); sas_device->handle = handle; if (_scsih_get_sas_address(ioc, le16_to_cpu (sas_device_pg0.ParentDevHandle), @@ -5296,6 +5473,7 @@ _scsih_add_device(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 phy_num, u8 is_pd) else _scsih_sas_device_add(ioc, sas_device); + sas_device_put(sas_device); return 0; } @@ -5344,7 +5522,6 @@ _scsih_remove_device(struct MPT2SAS_ADAPTER *ioc, "handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name, __func__, sas_device->handle, (unsigned long long) sas_device->sas_address)); - kfree(sas_device); } /** * _scsih_device_remove_by_handle - removing device object by handle @@ -5363,12 +5540,17 @@ _scsih_device_remove_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle) return; spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); - if (sas_device) - list_del(&sas_device->list); + sas_device = __mpt2sas_get_sdev_by_handle(ioc, handle); + if (sas_device) { + list_del_init(&sas_device->list); + sas_device_put(sas_device); + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - if (sas_device) + + if (sas_device) { _scsih_remove_device(ioc, sas_device); + sas_device_put(sas_device); + } } /** @@ -5389,13 +5571,17 @@ mpt2sas_device_remove_by_sas_address(struct MPT2SAS_ADAPTER *ioc, return; spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, - sas_address); - if (sas_device) - list_del(&sas_device->list); + sas_device = __mpt2sas_get_sdev_by_addr(ioc, sas_address); + if (sas_device) { + list_del_init(&sas_device->list); + sas_device_put(sas_device); + } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - if (sas_device) + + if (sas_device) { _scsih_remove_device(ioc, sas_device); + sas_device_put(sas_device); + } } #ifdef CONFIG_SCSI_MPT2SAS_LOGGING /** @@ -5716,26 +5902,28 @@ _scsih_sas_device_status_change_event(struct MPT2SAS_ADAPTER *ioc, spin_lock_irqsave(&ioc->sas_device_lock, flags); sas_address = le64_to_cpu(event_data->SASAddress); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = __mpt2sas_get_sdev_by_addr(ioc, sas_address); - if (!sas_device || !sas_device->starget) { - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; - } + if (!sas_device || !sas_device->starget) + goto out; target_priv_data = sas_device->starget->hostdata; - if (!target_priv_data) { - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - return; - } + if (!target_priv_data) + goto out; if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET) target_priv_data->tm_busy = 1; else target_priv_data->tm_busy = 0; + +out: + if (sas_device) + sas_device_put(sas_device); + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + } #ifdef CONFIG_SCSI_MPT2SAS_LOGGING @@ -6123,7 +6311,7 @@ _scsih_sas_pd_expose(struct MPT2SAS_ADAPTER *ioc, u16 handle = le16_to_cpu(element->PhysDiskDevHandle); spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); + sas_device = __mpt2sas_get_sdev_by_handle(ioc, handle); if (sas_device) { sas_device->volume_handle = 0; sas_device->volume_wwid = 0; @@ -6142,6 +6330,8 @@ _scsih_sas_pd_expose(struct MPT2SAS_ADAPTER *ioc, /* exposing raid component */ if (starget) starget_for_each_device(starget, NULL, _scsih_reprobe_lun); + + sas_device_put(sas_device); } /** @@ -6170,7 +6360,7 @@ _scsih_sas_pd_hide(struct MPT2SAS_ADAPTER *ioc, &volume_wwid); spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); + sas_device = __mpt2sas_get_sdev_by_handle(ioc, handle); if (sas_device) { set_bit(handle, ioc->pd_handles); if (sas_device->starget && sas_device->starget->hostdata) { @@ -6189,6 +6379,8 @@ _scsih_sas_pd_hide(struct MPT2SAS_ADAPTER *ioc, /* hiding raid component */ if (starget) starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun); + + sas_device_put(sas_device); } /** @@ -6221,7 +6413,6 @@ _scsih_sas_pd_add(struct MPT2SAS_ADAPTER *ioc, Mpi2EventIrConfigElement_t *element) { struct _sas_device *sas_device; - unsigned long flags; u16 handle = le16_to_cpu(element->PhysDiskDevHandle); Mpi2ConfigReply_t mpi_reply; Mpi2SasDevicePage0_t sas_device_pg0; @@ -6231,11 +6422,11 @@ _scsih_sas_pd_add(struct MPT2SAS_ADAPTER *ioc, set_bit(handle, ioc->pd_handles); - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - if (sas_device) + sas_device = mpt2sas_get_sdev_by_handle(ioc, handle); + if (sas_device) { + sas_device_put(sas_device); return; + } if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) { @@ -6509,7 +6700,6 @@ _scsih_sas_ir_physical_disk_event(struct MPT2SAS_ADAPTER *ioc, u16 handle, parent_handle; u32 state; struct _sas_device *sas_device; - unsigned long flags; Mpi2ConfigReply_t mpi_reply; Mpi2SasDevicePage0_t sas_device_pg0; u32 ioc_status; @@ -6542,12 +6732,11 @@ _scsih_sas_ir_physical_disk_event(struct MPT2SAS_ADAPTER *ioc, if (!ioc->is_warpdrive) set_bit(handle, ioc->pd_handles); - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - - if (sas_device) + sas_device = mpt2sas_get_sdev_by_handle(ioc, handle); + if (sas_device) { + sas_device_put(sas_device); return; + } if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, @@ -7015,6 +7204,7 @@ _scsih_remove_unresponding_sas_devices(struct MPT2SAS_ADAPTER *ioc) struct _raid_device *raid_device, *raid_device_next; struct list_head tmp_list; unsigned long flags; + LIST_HEAD(head); printk(MPT2SAS_INFO_FMT "removing unresponding devices: start\n", ioc->name); @@ -7022,14 +7212,29 @@ _scsih_remove_unresponding_sas_devices(struct MPT2SAS_ADAPTER *ioc) /* removing unresponding end devices */ printk(MPT2SAS_INFO_FMT "removing unresponding devices: end-devices\n", ioc->name); + + /* + * Iterate, pulling off devices marked as non-responding. We become the + * owner for the reference the list had on any object we prune. + */ + spin_lock_irqsave(&ioc->sas_device_lock, flags); list_for_each_entry_safe(sas_device, sas_device_next, - &ioc->sas_device_list, list) { + &ioc->sas_device_list, list) { if (!sas_device->responding) - mpt2sas_device_remove_by_sas_address(ioc, - sas_device->sas_address); + list_move_tail(&sas_device->list, &head); else sas_device->responding = 0; } + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + + /* + * Now, uninitialize and remove the unresponding devices we pruned. + */ + list_for_each_entry_safe(sas_device, sas_device_next, &head, list) { + _scsih_remove_device(ioc, sas_device); + list_del_init(&sas_device->list); + sas_device_put(sas_device); + } /* removing unresponding volumes */ if (ioc->ir_firmware) { @@ -7179,11 +7384,11 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc) } phys_disk_num = pd_pg0.PhysDiskNum; handle = le16_to_cpu(pd_pg0.DevHandle); - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = _scsih_sas_device_find_by_handle(ioc, handle); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - if (sas_device) + sas_device = mpt2sas_get_sdev_by_handle(ioc, handle); + if (sas_device) { + sas_device_put(sas_device); continue; + } if (mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle) != 0) @@ -7302,12 +7507,12 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc) if (!(_scsih_is_end_device( le32_to_cpu(sas_device_pg0.DeviceInfo)))) continue; - spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc, + sas_device = mpt2sas_get_sdev_by_addr(ioc, le64_to_cpu(sas_device_pg0.SASAddress)); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); - if (sas_device) + if (sas_device) { + sas_device_put(sas_device); continue; + } parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle); if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) { printk(MPT2SAS_INFO_FMT "\tBEFORE adding end device: " @@ -7410,17 +7615,27 @@ _firmware_event_work(struct work_struct *work) struct fw_event_work, delayed_work.work); struct MPT2SAS_ADAPTER *ioc = fw_event->ioc; + _scsih_fw_event_del_from_list(ioc, fw_event); + /* the queue is being flushed so ignore this event */ - if (ioc->remove_host || - ioc->pci_error_recovery) { - _scsih_fw_event_free(ioc, fw_event); + if (ioc->remove_host || ioc->pci_error_recovery) { + fw_event_work_put(fw_event); return; } switch (fw_event->event) { case MPT2SAS_REMOVE_UNRESPONDING_DEVICES: - while (scsi_host_in_recovery(ioc->shost) || ioc->shost_recovery) + while (scsi_host_in_recovery(ioc->shost) || + ioc->shost_recovery) { + /* + * If we're unloading, bail. Otherwise, this can become + * an infinite loop. + */ + if (ioc->remove_host) + goto out; + ssleep(1); + } _scsih_remove_unresponding_sas_devices(ioc); _scsih_scan_for_devices_after_reset(ioc); break; @@ -7469,7 +7684,8 @@ _firmware_event_work(struct work_struct *work) _scsih_sas_ir_operation_status_event(ioc, fw_event); break; } - _scsih_fw_event_free(ioc, fw_event); +out: + fw_event_work_put(fw_event); } /** @@ -7607,7 +7823,7 @@ mpt2sas_scsih_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, } sz = le16_to_cpu(mpi_reply->EventDataLength) * 4; - fw_event = kzalloc(sizeof(*fw_event) + sz, GFP_ATOMIC); + fw_event = alloc_fw_event_work(sz); if (!fw_event) { printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__, __func__); @@ -7620,6 +7836,7 @@ mpt2sas_scsih_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, fw_event->VP_ID = mpi_reply->VP_ID; fw_event->event = event; _scsih_fw_event_add(ioc, fw_event); + fw_event_work_put(fw_event); return; } @@ -7867,7 +8084,9 @@ _scsih_remove(struct pci_dev *pdev) sas_remove_host(shost); scsi_remove_host(shost); mpt2sas_base_detach(ioc); + spin_lock(&gioc_lock); list_del(&ioc->list); + spin_unlock(&gioc_lock); scsi_host_put(shost); } @@ -7966,6 +8185,48 @@ _scsih_probe_raid(struct MPT2SAS_ADAPTER *ioc) } } +static struct _sas_device *get_next_sas_device(struct MPT2SAS_ADAPTER *ioc) +{ + struct _sas_device *sas_device = NULL; + unsigned long flags; + + spin_lock_irqsave(&ioc->sas_device_lock, flags); + if (!list_empty(&ioc->sas_device_init_list)) { + sas_device = list_first_entry(&ioc->sas_device_init_list, + struct _sas_device, list); + sas_device_get(sas_device); + } + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + + return sas_device; +} + +static void sas_device_make_active(struct MPT2SAS_ADAPTER *ioc, + struct _sas_device *sas_device) +{ + unsigned long flags; + + spin_lock_irqsave(&ioc->sas_device_lock, flags); + + /* + * Since we dropped the lock during the call to port_add(), we need to + * be careful here that somebody else didn't move or delete this item + * while we were busy with other things. + * + * If it was on the list, we need a put() for the reference the list + * had. Either way, we need a get() for the destination list. + */ + if (!list_empty(&sas_device->list)) { + list_del_init(&sas_device->list); + sas_device_put(sas_device); + } + + sas_device_get(sas_device); + list_add_tail(&sas_device->list, &ioc->sas_device_list); + + spin_unlock_irqrestore(&ioc->sas_device_lock, flags); +} + /** * _scsih_probe_sas - reporting sas devices to sas transport * @ioc: per adapter object @@ -7975,34 +8236,30 @@ _scsih_probe_raid(struct MPT2SAS_ADAPTER *ioc) static void _scsih_probe_sas(struct MPT2SAS_ADAPTER *ioc) { - struct _sas_device *sas_device, *next; - unsigned long flags; - - /* SAS Device List */ - list_for_each_entry_safe(sas_device, next, &ioc->sas_device_init_list, - list) { + struct _sas_device *sas_device; - if (ioc->hide_drives) - continue; + if (ioc->hide_drives) + return; + while ((sas_device = get_next_sas_device(ioc))) { if (!mpt2sas_transport_port_add(ioc, sas_device->handle, - sas_device->sas_address_parent)) { - list_del(&sas_device->list); - kfree(sas_device); + sas_device->sas_address_parent)) { + _scsih_sas_device_remove(ioc, sas_device); + sas_device_put(sas_device); continue; } else if (!sas_device->starget) { if (!ioc->is_driver_loading) { mpt2sas_transport_port_remove(ioc, - sas_device->sas_address, - sas_device->sas_address_parent); - list_del(&sas_device->list); - kfree(sas_device); + sas_device->sas_address, + sas_device->sas_address_parent); + _scsih_sas_device_remove(ioc, sas_device); + sas_device_put(sas_device); continue; } } - spin_lock_irqsave(&ioc->sas_device_lock, flags); - list_move_tail(&sas_device->list, &ioc->sas_device_list); - spin_unlock_irqrestore(&ioc->sas_device_lock, flags); + + sas_device_make_active(ioc, sas_device); + sas_device_put(sas_device); } } @@ -8142,7 +8399,9 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) ioc = shost_priv(shost); memset(ioc, 0, sizeof(struct MPT2SAS_ADAPTER)); INIT_LIST_HEAD(&ioc->list); + spin_lock(&gioc_lock); list_add_tail(&ioc->list, &mpt2sas_ioc_list); + spin_unlock(&gioc_lock); ioc->shost = shost; ioc->id = mpt_ids++; sprintf(ioc->name, "%s%d", MPT2SAS_DRIVER_NAME, ioc->id); @@ -8167,6 +8426,8 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds; /* misc semaphores and spin locks */ mutex_init(&ioc->reset_in_progress_mutex); + /* initializing pci_access_mutex lock */ + mutex_init(&ioc->pci_access_mutex); spin_lock_init(&ioc->ioc_reset_in_progress_lock); spin_lock_init(&ioc->scsi_lookup_lock); spin_lock_init(&ioc->sas_device_lock); @@ -8269,7 +8530,9 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) out_attach_fail: destroy_workqueue(ioc->firmware_event_thread); out_thread_fail: + spin_lock(&gioc_lock); list_del(&ioc->list); + spin_unlock(&gioc_lock); scsi_host_put(shost); return rv; } |