From: Quinn Tran <qutran@xxxxxxxxxxx> [ Upstream commit 63ab6cb582fad3757a03f466db671729b97f2df8 ] The current edif code does not keep track of FW IOCB resources. This led to IOCB queue full on error recovery (I/O timeout). Make use of the existing code that tracks IOCB resources to prevent over-subscription. Link: https://lore.kernel.org/r/20220608115849.16693-2-njavali@xxxxxxxxxxx Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> Signed-off-by: Quinn Tran <qutran@xxxxxxxxxxx> Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Stable-dep-of: 41e5afe51f75 ("scsi: qla2xxx: Fix exchange oversubscription") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/scsi/qla2xxx/qla_edif.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c index 8e9237434e8b1..a7e2118b3a841 100644 --- a/drivers/scsi/qla2xxx/qla_edif.c +++ b/drivers/scsi/qla2xxx/qla_edif.c @@ -2898,6 +2898,12 @@ qla28xx_start_scsi_edif(srb_t *sp) tot_dsds = nseg; req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); + + sp->iores.res_type = RESOURCE_INI; + sp->iores.iocb_cnt = req_cnt; + if (qla_get_iocbs(sp->qpair, &sp->iores)) + goto queuing_error; + if (req->cnt < (req_cnt + 2)) { cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : rd_reg_dword(req->req_q_out); @@ -3089,6 +3095,7 @@ qla28xx_start_scsi_edif(srb_t *sp) mempool_free(sp->u.scmd.ct6_ctx, ha->ctx_mempool); sp->u.scmd.ct6_ctx = NULL; } + qla_put_iocbs(sp->qpair, &sp->iores); spin_unlock_irqrestore(lock, flags); return QLA_FUNCTION_FAILED; -- 2.39.2
