From: Robert Elliott Date: Thu, 23 Apr 2015 14:34:53 +0000 (-0500) Subject: hpsa: create workqueue after the driver is ready for use X-Git-Tag: v4.2-rc1~147^2~61 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=2efa5929cb448266fcfc19d50cb6cd32c59524ef;p=linux.git hpsa: create workqueue after the driver is ready for use Don't create the resubmit workqueue in hpsa_init_one until everything else is ready to use, so everything can be freed in reverse order of when they were allocated without risking freeing things while workqueue items are still active. Destroy the workqueue in the right order in hpsa_undo_allocations_after_kdump_soft_reset too. Reviewed-by: Scott Teel Reviewed-by: Kevin Barnett Reviewed-by: Tomas Henzl Reviewed-by: Hannes Reinecke Signed-off-by: Robert Elliott Signed-off-by: Don Brace Reviewed-by: Christoph Hellwig Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 0b8b8808b944..8ef908cc1a2c 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -7674,30 +7674,18 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS); atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS); - h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); - if (!h->rescan_ctlr_wq) { - rc = -ENOMEM; - goto clean1; - } - - h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); - if (!h->resubmit_wq) { - rc = -ENOMEM; - goto clean1; /* aer/h */ - } - /* Allocate and clear per-cpu variable lockup_detected */ h->lockup_detected = alloc_percpu(u32); if (!h->lockup_detected) { dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n"); rc = -ENOMEM; - goto clean1; /* wq/aer/h */ + goto clean1; /* aer/h */ } set_lockup_detected_for_all_cpus(h, 0); rc = hpsa_pci_init(h); if (rc) - goto clean2; /* lockup, wq/aer/h */ + goto clean2; /* lockup, aer/h */ sprintf(h->devname, HPSA "%d", number_of_controllers); h->ctlr = number_of_controllers; @@ -7713,7 +7701,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) dac = 0; } else { dev_err(&pdev->dev, "no suitable DMA available\n"); - goto clean3; /* pci, lockup, wq/aer/h */ + goto clean3; /* pci, lockup, aer/h */ } } @@ -7722,16 +7710,16 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx); if (rc) - goto clean3; /* pci, lockup, wq/aer/h */ + goto clean3; /* pci, lockup, aer/h */ dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", h->devname, pdev->device, h->intr[h->intr_mode], dac ? "" : " not"); rc = hpsa_alloc_cmd_pool(h); if (rc) - goto clean4; /* irq, pci, lockup, wq/aer/h */ + goto clean4; /* irq, pci, lockup, aer/h */ rc = hpsa_alloc_sg_chain_blocks(h); if (rc) - goto clean5; /* cmd, irq, pci, lockup, wq/aer/h */ + goto clean5; /* cmd, irq, pci, lockup, aer/h */ init_waitqueue_head(&h->scan_wait_queue); init_waitqueue_head(&h->abort_cmd_wait_queue); init_waitqueue_head(&h->abort_sync_wait_queue); @@ -7744,7 +7732,20 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) spin_lock_init(&h->devlock); rc = hpsa_put_ctlr_into_performant_mode(h); if (rc) - goto clean6; /* sg, cmd, irq, pci, lockup, wq/aer/h */ + goto clean6; /* sg, cmd, irq, pci, lockup, aer/h */ + + /* create the resubmit workqueue */ + h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); + if (!h->rescan_ctlr_wq) { + rc = -ENOMEM; + goto clean7; + } + + h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); + if (!h->resubmit_wq) { + rc = -ENOMEM; + goto clean7; /* aer/h */ + } /* * At this point, the controller is ready to take commands. @@ -7786,7 +7787,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) rc = hpsa_kdump_soft_reset(h); if (rc) /* Neither hard nor soft reset worked, we're hosed. */ - goto clean7; + goto clean8; dev_info(&h->pdev->dev, "Board READY.\n"); dev_info(&h->pdev->dev, @@ -7823,7 +7824,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) hpsa_hba_inquiry(h); rc = hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ if (rc) - goto clean7; + goto clean8; /* wq, perf, sg, cmd, irq, pci, lockup, aer/h */ /* Monitor the controller for firmware lockups */ h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; @@ -7835,19 +7836,20 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) h->heartbeat_sample_interval); return 0; -clean7: /* perf, sg, cmd, irq, pci, lockup, wq/aer/h */ +clean8: /* perf, sg, cmd, irq, pci, lockup, aer/h */ kfree(h->hba_inquiry_data); +clean7: /* perf, sg, cmd, irq, pci, lockup, aer/h */ hpsa_free_performant_mode(h); h->access.set_intr_mask(h, HPSA_INTR_OFF); clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */ hpsa_free_sg_chain_blocks(h); -clean5: /* cmd, irq, pci, lockup, wq/aer/h */ +clean5: /* cmd, irq, pci, lockup, aer/h */ hpsa_free_cmd_pool(h); -clean4: /* irq, pci, lockup, wq/aer/h */ +clean4: /* irq, pci, lockup, aer/h */ hpsa_free_irqs(h); -clean3: /* pci, lockup, wq/aer/h */ +clean3: /* pci, lockup, aer/h */ hpsa_free_pci_init(h); -clean2: /* lockup, wq/aer/h */ +clean2: /* lockup, aer/h */ if (h->lockup_detected) { free_percpu(h->lockup_detected); h->lockup_detected = NULL; @@ -7946,9 +7948,9 @@ static void hpsa_remove_one(struct pci_dev *pdev) hpsa_free_device_info(h); /* scan */ - hpsa_unregister_scsi(h); /* init_one "8" */ - kfree(h->hba_inquiry_data); /* init_one "8" */ - h->hba_inquiry_data = NULL; /* init_one "8" */ + hpsa_unregister_scsi(h); /* init_one 9 */ + kfree(h->hba_inquiry_data); /* init_one 9 */ + h->hba_inquiry_data = NULL; /* init_one 9 */ hpsa_free_performant_mode(h); /* init_one 7 */ hpsa_free_sg_chain_blocks(h); /* init_one 6 */ hpsa_free_cmd_pool(h); /* init_one 5 */