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[SCSI] qla2xxx: Avoid poisoning in the response queue for ISPFX00.

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Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Saurav Kashyap 2014-02-26 04:15:10 -05:00 committed by James Bottomley
parent d68b3e019a
commit 6ac1f3b5ec
1 changed files with 8 additions and 7 deletions
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15
drivers/scsi/qla2xxx/qla_mr.c
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@ -2821,16 +2821,22 @@ qlafx00_process_response_queue(struct scsi_qla_host *vha,
{
struct sts_entry_fx00 *pkt;
response_t *lptr;
uint16_t lreq_q_in = 0;
uint16_t lreq_q_out = 0;
while (RD_REG_DWORD((void __iomem *)&(rsp->ring_ptr->signature)) !=
RESPONSE_PROCESSED) {
lreq_q_in = RD_REG_DWORD(rsp->rsp_q_in);
lreq_q_out = RD_REG_DWORD(rsp->rsp_q_out);
while (lreq_q_in != lreq_q_out) {
lptr = rsp->ring_ptr;
memcpy_fromio(rsp->rsp_pkt, (void __iomem *)lptr,
sizeof(rsp->rsp_pkt));
pkt = (struct sts_entry_fx00 *)rsp->rsp_pkt;
rsp->ring_index++;
lreq_q_out++;
if (rsp->ring_index == rsp->length) {
lreq_q_out = 0;
rsp->ring_index = 0;
rsp->ring_ptr = rsp->ring;
} else {
@ -2842,7 +2848,6 @@ qlafx00_process_response_queue(struct scsi_qla_host *vha,
qlafx00_error_entry(vha, rsp,
(struct sts_entry_fx00 *)pkt, pkt->entry_status,
pkt->entry_type);
goto next_iter;
continue;
}
@ -2876,10 +2881,6 @@ qlafx00_process_response_queue(struct scsi_qla_host *vha,
pkt->entry_type, pkt->entry_status);
break;
}
next_iter:
WRT_REG_DWORD((void __iomem *)&lptr->signature,
RESPONSE_PROCESSED);
wmb();
}
/* Adjust ring index */