[PATCH 01/14] qla2xxx: Fix process response queue for ISP26XX and above

[Himanshu Madhani]

From: Quinn Tran <quinn.t...@cavium.com>

This patch improves performance for 16G and above adaper by
removing additional call to process_response_queue().

Cc: <sta...@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.t...@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madh...@cavium.com>
---
 drivers/scsi/qla2xxx/qla_init.c |  2 --
 drivers/scsi/qla2xxx/qla_iocb.c | 17 -----------------
 2 files changed, 19 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index b934977c5c26..4686fb5f26aa 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -7142,7 +7142,6 @@ qla24xx_nvram_config(scsi_qla_host_t *vha)
        }
        icb->firmware_options_2 &= cpu_to_le32(
            ~(BIT_3 | BIT_2 | BIT_1 | BIT_0));
-       vha->flags.process_response_queue = 0;
        if (ha->zio_mode != QLA_ZIO_DISABLED) {
                ha->zio_mode = QLA_ZIO_MODE_6;
 
@@ -7153,7 +7152,6 @@ qla24xx_nvram_config(scsi_qla_host_t *vha)
                icb->firmware_options_2 |= cpu_to_le32(
                    (uint32_t)ha->zio_mode);
                icb->interrupt_delay_timer = cpu_to_le16(ha->zio_timer);
-               vha->flags.process_response_queue = 1;
        }
 
        if (rval) {
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 42ac8e097419..119927220299 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -1526,12 +1526,6 @@ qla24xx_start_scsi(srb_t *sp)
 
        /* Set chip new ring index. */
        WRT_REG_DWORD(req->req_q_in, req->ring_index);
-       RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
-
-       /* Manage unprocessed RIO/ZIO commands in response queue. */
-       if (vha->flags.process_response_queue &&
-               rsp->ring_ptr->signature != RESPONSE_PROCESSED)
-               qla24xx_process_response_queue(vha, rsp);
 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
        return QLA_SUCCESS;
@@ -1725,12 +1719,6 @@ qla24xx_dif_start_scsi(srb_t *sp)
 
        /* Set chip new ring index. */
        WRT_REG_DWORD(req->req_q_in, req->ring_index);
-       RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
-
-       /* Manage unprocessed RIO/ZIO commands in response queue. */
-       if (vha->flags.process_response_queue &&
-           rsp->ring_ptr->signature != RESPONSE_PROCESSED)
-               qla24xx_process_response_queue(vha, rsp);
 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
@@ -1880,11 +1868,6 @@ qla2xxx_start_scsi_mq(srb_t *sp)
        /* Set chip new ring index. */
        WRT_REG_DWORD(req->req_q_in, req->ring_index);
 
-       /* Manage unprocessed RIO/ZIO commands in response queue. */
-       if (vha->flags.process_response_queue &&
-               rsp->ring_ptr->signature != RESPONSE_PROCESSED)
-               qla24xx_process_response_queue(vha, rsp);
-
        spin_unlock_irqrestore(&qpair->qp_lock, flags);
        return QLA_SUCCESS;
 
-- 
2.12.0