diff options
| -rw-r--r-- | drivers/scsi/cxlflash/common.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/cxlflash/main.c | 34 |
2 files changed, 6 insertions, 30 deletions
diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h index dee865735ac0..d11dcc59ff46 100644 --- a/drivers/scsi/cxlflash/common.h +++ b/drivers/scsi/cxlflash/common.h @@ -174,8 +174,6 @@ struct afu { struct sisl_host_map __iomem *host_map; /* MC host map */ struct sisl_ctrl_map __iomem *ctrl_map; /* MC control map */ - struct kref mapcount; - ctx_hndl_t ctx_hndl; /* master's context handle */ atomic_t hsq_credits; diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index ab38bca5df2b..7069639e92bc 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -419,16 +419,6 @@ out: return rc; } -static void afu_unmap(struct kref *ref) -{ - struct afu *afu = container_of(ref, struct afu, mapcount); - - if (likely(afu->afu_map)) { - cxl_psa_unmap((void __iomem *)afu->afu_map); - afu->afu_map = NULL; - } -} - /** * cxlflash_driver_info() - information handler for this host driver * @host: SCSI host associated with device. @@ -459,7 +449,6 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp) ulong lock_flags; int nseg = 0; int rc = 0; - int kref_got = 0; dev_dbg_ratelimited(dev, "%s: (scp=%p) %d/%d/%d/%llu " "cdb=(%08x-%08x-%08x-%08x)\n", @@ -497,9 +486,6 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp) break; } - kref_get(&cfg->afu->mapcount); - kref_got = 1; - if (likely(sg)) { nseg = scsi_dma_map(scp); if (unlikely(nseg < 0)) { @@ -530,8 +516,6 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp) if (unlikely(rc)) scsi_dma_unmap(scp); out: - if (kref_got) - kref_put(&afu->mapcount, afu_unmap); return rc; } @@ -569,13 +553,15 @@ static void free_mem(struct cxlflash_cfg *cfg) * * Safe to call with AFU in a partially allocated/initialized state. * - * Waits for any active internal AFU commands to timeout and then unmaps - * the MMIO space. + * Cancels scheduled worker threads, waits for any active internal AFU + * commands to timeout and then unmaps the MMIO space. */ static void stop_afu(struct cxlflash_cfg *cfg) { struct afu *afu = cfg->afu; + cancel_work_sync(&cfg->work_q); + if (likely(afu)) { while (atomic_read(&afu->cmds_active)) ssleep(1); @@ -583,7 +569,6 @@ static void stop_afu(struct cxlflash_cfg *cfg) cxl_psa_unmap((void __iomem *)afu->afu_map); afu->afu_map = NULL; } - kref_put(&afu->mapcount, afu_unmap); } } @@ -767,7 +752,6 @@ static void cxlflash_remove(struct pci_dev *pdev) scsi_remove_host(cfg->host); /* fall through */ case INIT_STATE_AFU: - cancel_work_sync(&cfg->work_q); term_afu(cfg); case INIT_STATE_PCI: pci_disable_device(pdev); @@ -1277,7 +1261,6 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data) __func__, port); cfg->lr_state = LINK_RESET_REQUIRED; cfg->lr_port = port; - kref_get(&cfg->afu->mapcount); schedule_work(&cfg->work_q); } @@ -1298,7 +1281,6 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data) if (info->action & SCAN_HOST) { atomic_inc(&cfg->scan_host_needed); - kref_get(&cfg->afu->mapcount); schedule_work(&cfg->work_q); } } @@ -1704,7 +1686,6 @@ static int init_afu(struct cxlflash_cfg *cfg) rc = -ENOMEM; goto err1; } - kref_init(&afu->mapcount); /* No byte reverse on reading afu_version or string will be backwards */ reg = readq(&afu->afu_map->global.regs.afu_version); @@ -1716,7 +1697,7 @@ static int init_afu(struct cxlflash_cfg *cfg) "interface version %016llx\n", afu->version, afu->interface_version); rc = -EINVAL; - goto err2; + goto err1; } if (afu_is_sq_cmd_mode(afu)) { @@ -1733,7 +1714,7 @@ static int init_afu(struct cxlflash_cfg *cfg) rc = start_afu(cfg); if (rc) { dev_err(dev, "%s: start_afu failed, rc=%d\n", __func__, rc); - goto err2; + goto err1; } afu_err_intr_init(cfg->afu); @@ -1746,8 +1727,6 @@ out: dev_dbg(dev, "%s: returning rc=%d\n", __func__, rc); return rc; -err2: - kref_put(&afu->mapcount, afu_unmap); err1: term_intr(cfg, UNMAP_THREE); term_mc(cfg); @@ -2341,7 +2320,6 @@ static void cxlflash_worker_thread(struct work_struct *work) if (atomic_dec_if_positive(&cfg->scan_host_needed) >= 0) scsi_scan_host(cfg->host); - kref_put(&afu->mapcount, afu_unmap); } /** |