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[SCSI] qla2xxx: Use correct Request-Q-Out register during bidirectional request processing 

Original code was not corrected for ISP83xx support. Instead code should used
the cached reference from the req_que structure, rather than the legacy
'if (ISP-TYPE(X))... else if (ISP-TYPE(Y))...' codes.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Andrew Vasquez 2012-11-21 02:40:33 -05:00 committed by James Bottomley
parent 53016ed321
commit 7e98df229e
1 changed files with 1 additions and 10 deletions
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11
drivers/scsi/qla2xxx/qla_iocb.c
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@ -2748,7 +2748,6 @@ qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
struct rsp_que *rsp;
struct req_que *req;
int rval = EXT_STATUS_OK;
device_reg_t __iomem *reg = ISP_QUE_REG(ha, vha->req->id);
rval = QLA_SUCCESS;
@ -2786,15 +2785,7 @@ qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
/* Check for room on request queue. */
if (req->cnt < req_cnt + 2) {
if (ha->mqenable)
cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
else if (IS_QLA82XX(ha))
cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
else if (IS_FWI2_CAPABLE(ha))
cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
else
cnt = qla2x00_debounce_register(
ISP_REQ_Q_OUT(ha, &reg->isp));
cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;