diff options
| author |   Shivasharan S <shivasharan.srikanteshwara@broadcom.com> | 2018-10-16 23:37:50 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-06 20:33:57 -0500 |
| commit | 34bd9f27e39be6e4bfb69bc8e79a7f5c4aa1c8c4 (patch) | |
| tree | ef674d953265654911fb3686e9a9e6bfab18a60e /drivers/scsi/megaraid/megaraid_sas_fusion.c | |
| parent | scsi: megaraid_sas: optimize raid context access in IO path (diff) | |
| download | linux-dev-34bd9f27e39be6e4bfb69bc8e79a7f5c4aa1c8c4.tar.xz linux-dev-34bd9f27e39be6e4bfb69bc8e79a7f5c4aa1c8c4.zip | |
scsi: megaraid_sas: Remove spin lock for dpc operation
Optimization: No need to hold hba_lock in dpc context for reading atomic
variable.
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 7df7e2c8d4b3..259fc892703e 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -3573,18 +3573,13 @@ megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) { struct megasas_instance *instance = (struct megasas_instance *)instance_addr; - unsigned long flags; u32 count, MSIxIndex; count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; /* If we have already declared adapter dead, donot complete cmds */ - spin_lock_irqsave(&instance->hba_lock, flags); - if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { - spin_unlock_irqrestore(&instance->hba_lock, flags); + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) return; - } - spin_unlock_irqrestore(&instance->hba_lock, flags); for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) complete_cmd_fusion(instance, MSIxIndex); |