diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-08-23 15:05:04 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-08-24 22:29:22 -0400 |
| commit | dc62c3bea888f0fe2a472eb8264e186ca798180c (patch) | |
| tree | c56b14d5b9f819e5f7057a9c2d2e3f0cd3bcd472 /drivers/scsi/qla2xxx | |
| parent | 1608cc4abfe46c31c4b0549693fb9dc5244e2c50 (diff) | |
| download | linux-dc62c3bea888f0fe2a472eb8264e186ca798180c.tar.gz | |
scsi: qla2xxx: Remove extra register read
Remove extra register read for each interrupt for performance improvement. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 9 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_target.c | 1 |
2 files changed, 0 insertions, 10 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index c6c066186d97..df8a7f378e72 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3157,7 +3157,6 @@ qla24xx_msix_rsp_q(int irq, void *dev_id) struct device_reg_24xx __iomem *reg; struct scsi_qla_host *vha; unsigned long flags; - uint32_t stat = 0; rsp = (struct rsp_que *) dev_id; if (!rsp) { @@ -3171,19 +3170,11 @@ qla24xx_msix_rsp_q(int irq, void *dev_id) spin_lock_irqsave(&ha->hardware_lock, flags); vha = pci_get_drvdata(ha->pdev); - /* - * Use host_status register to check to PCI disconnection before we - * we process the response queue. - */ - stat = RD_REG_DWORD(®->host_status); - if (qla2x00_check_reg32_for_disconnect(vha, stat)) - goto out; qla24xx_process_response_queue(vha, rsp); if (!ha->flags.disable_msix_handshake) { WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); RD_REG_DWORD_RELAXED(®->hccr); } -out: spin_unlock_irqrestore(&ha->hardware_lock, flags); return IRQ_HANDLED; diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 4e2a64773060..3bcfbee2ae26 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -6530,7 +6530,6 @@ qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) /* Adjust ring index */ WRT_REG_DWORD(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); - RD_REG_DWORD_RELAXED(ISP_ATIO_Q_OUT(vha)); } void |