diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_mbox.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 81 |
1 files changed, 17 insertions, 64 deletions
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index c9e743ba09e..670c7a44ab6 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -533,8 +533,6 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) // Initialize the synchronization lock for kernel and LLD spin_lock_init(&adapter->lock); - adapter->host_lock = &adapter->lock; - // Initialize the command queues: the list of free SCBs and the list // of pending SCBs. @@ -715,9 +713,6 @@ megaraid_io_attach(adapter_t *adapter) SCSIHOST2ADAP(host) = (caddr_t)adapter; adapter->host = host; - // export the parameters required by the mid-layer - scsi_assign_lock(host, adapter->host_lock); - host->irq = adapter->irq; host->unique_id = adapter->unique_id; host->can_queue = adapter->max_cmds; @@ -1560,10 +1555,6 @@ megaraid_queue_command(struct scsi_cmnd *scp, void (* done)(struct scsi_cmnd *)) scp->scsi_done = done; scp->result = 0; - assert_spin_locked(adapter->host_lock); - - spin_unlock(adapter->host_lock); - /* * Allocate and build a SCB request * if_busy flag will be set if megaraid_mbox_build_cmd() command could @@ -1573,23 +1564,16 @@ megaraid_queue_command(struct scsi_cmnd *scp, void (* done)(struct scsi_cmnd *)) * return 0 in that case, and we would do the callback right away. */ if_busy = 0; - scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); - - if (scb) { - megaraid_mbox_runpendq(adapter, scb); - } - - spin_lock(adapter->host_lock); - + scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); if (!scb) { // command already completed done(scp); return 0; } + megaraid_mbox_runpendq(adapter, scb); return if_busy; } - /** * megaraid_mbox_build_cmd - transform the mid-layer scsi command to megaraid * firmware lingua @@ -2546,9 +2530,7 @@ megaraid_mbox_dpc(unsigned long devp) megaraid_dealloc_scb(adapter, scb); // send the scsi packet back to kernel - spin_lock(adapter->host_lock); scp->scsi_done(scp); - spin_unlock(adapter->host_lock); } return; @@ -2563,7 +2545,7 @@ megaraid_mbox_dpc(unsigned long devp) * aborted. All the commands issued to the F/W must complete. **/ static int -__megaraid_abort_handler(struct scsi_cmnd *scp) +megaraid_abort_handler(struct scsi_cmnd *scp) { adapter_t *adapter; mraid_device_t *raid_dev; @@ -2577,8 +2559,6 @@ __megaraid_abort_handler(struct scsi_cmnd *scp) adapter = SCP2ADAPTER(scp); raid_dev = ADAP2RAIDDEV(adapter); - assert_spin_locked(adapter->host_lock); - con_log(CL_ANN, (KERN_WARNING "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), @@ -2658,6 +2638,7 @@ __megaraid_abort_handler(struct scsi_cmnd *scp) // traverse through the list of all SCB, since driver does not // maintain these SCBs on any list found = 0; + spin_lock_irq(&adapter->lock); for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { scb = adapter->kscb_list + i; @@ -2680,6 +2661,7 @@ __megaraid_abort_handler(struct scsi_cmnd *scp) } } } + spin_unlock_irq(&adapter->lock); if (!found) { con_log(CL_ANN, (KERN_WARNING @@ -2696,22 +2678,6 @@ __megaraid_abort_handler(struct scsi_cmnd *scp) return FAILED; } -static int -megaraid_abort_handler(struct scsi_cmnd *scp) -{ - adapter_t *adapter; - int rc; - - adapter = SCP2ADAPTER(scp); - - spin_lock_irq(adapter->host_lock); - rc = __megaraid_abort_handler(scp); - spin_unlock_irq(adapter->host_lock); - - return rc; -} - - /** * megaraid_reset_handler - device reset hadler for mailbox based driver * @scp : reference command @@ -2723,7 +2689,7 @@ megaraid_abort_handler(struct scsi_cmnd *scp) * host **/ static int -__megaraid_reset_handler(struct scsi_cmnd *scp) +megaraid_reset_handler(struct scsi_cmnd *scp) { adapter_t *adapter; scb_t *scb; @@ -2739,10 +2705,6 @@ __megaraid_reset_handler(struct scsi_cmnd *scp) adapter = SCP2ADAPTER(scp); raid_dev = ADAP2RAIDDEV(adapter); - assert_spin_locked(adapter->host_lock); - - con_log(CL_ANN, (KERN_WARNING "megaraid: reseting the host...\n")); - // return failure if adapter is not responding if (raid_dev->hw_error) { con_log(CL_ANN, (KERN_NOTICE @@ -2779,8 +2741,6 @@ __megaraid_reset_handler(struct scsi_cmnd *scp) adapter->outstanding_cmds, MBOX_RESET_WAIT)); } - spin_unlock(adapter->host_lock); - recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; recovering = adapter->outstanding_cmds; @@ -2806,7 +2766,7 @@ __megaraid_reset_handler(struct scsi_cmnd *scp) msleep(1000); } - spin_lock(adapter->host_lock); + spin_lock(&adapter->lock); // If still outstanding commands, bail out if (adapter->outstanding_cmds) { @@ -2815,7 +2775,8 @@ __megaraid_reset_handler(struct scsi_cmnd *scp) raid_dev->hw_error = 1; - return FAILED; + rval = FAILED; + goto out; } else { con_log(CL_ANN, (KERN_NOTICE @@ -2824,7 +2785,10 @@ __megaraid_reset_handler(struct scsi_cmnd *scp) // If the controller supports clustering, reset reservations - if (!adapter->ha) return SUCCESS; + if (!adapter->ha) { + rval = SUCCESS; + goto out; + } // clear reservations if any raw_mbox[0] = CLUSTER_CMD; @@ -2841,22 +2805,11 @@ __megaraid_reset_handler(struct scsi_cmnd *scp) "megaraid: reservation reset failed\n")); } + out: + spin_unlock_irq(&adapter->lock); return rval; } -static int -megaraid_reset_handler(struct scsi_cmnd *cmd) -{ - int rc; - - spin_lock_irq(cmd->device->host->host_lock); - rc = __megaraid_reset_handler(cmd); - spin_unlock_irq(cmd->device->host->host_lock); - - return rc; -} - - /* * START: internal commands library * @@ -3776,9 +3729,9 @@ wait_till_fw_empty(adapter_t *adapter) /* * Set the quiescent flag to stop issuing cmds to FW. */ - spin_lock_irqsave(adapter->host_lock, flags); + spin_lock_irqsave(&adapter->lock, flags); adapter->quiescent++; - spin_unlock_irqrestore(adapter->host_lock, flags); + spin_unlock_irqrestore(&adapter->lock, flags); /* * Wait till there are no more cmds outstanding at FW. Try for at most |