From: Arun Easi aeasi@marvell.com
commit c85ab7d9e27a80e48d5b7d7fb2fe2b0fdb2de523 upstream.
At NVMe ELS request time, request structure is DMA mapped and never unmapped. Fix this by calling the unmap on ELS completion.
Link: https://lore.kernel.org/r/20220310092604.22950-5-njavali@marvell.com Fixes: e84067d74301 ("scsi: qla2xxx: Add FC-NVMe F/W initialization and transport registration") Cc: stable@vger.kernel.org Reviewed-by: Himanshu Madhani himanshu.madhani@oracle.com Signed-off-by: Arun Easi aeasi@marvell.com Signed-off-by: Nilesh Javali njavali@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/qla2xxx/qla_nvme.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
--- a/drivers/scsi/qla2xxx/qla_nvme.c +++ b/drivers/scsi/qla2xxx/qla_nvme.c @@ -170,6 +170,18 @@ out: qla2xxx_rel_qpair_sp(sp->qpair, sp); }
+static void qla_nvme_ls_unmap(struct srb *sp, struct nvmefc_ls_req *fd) +{ + if (sp->flags & SRB_DMA_VALID) { + struct srb_iocb *nvme = &sp->u.iocb_cmd; + struct qla_hw_data *ha = sp->fcport->vha->hw; + + dma_unmap_single(&ha->pdev->dev, nvme->u.nvme.cmd_dma, + fd->rqstlen, DMA_TO_DEVICE); + sp->flags &= ~SRB_DMA_VALID; + } +} + static void qla_nvme_release_ls_cmd_kref(struct kref *kref) { struct srb *sp = container_of(kref, struct srb, cmd_kref); @@ -186,6 +198,8 @@ static void qla_nvme_release_ls_cmd_kref spin_unlock_irqrestore(&priv->cmd_lock, flags);
fd = priv->fd; + + qla_nvme_ls_unmap(sp, fd); fd->done(fd, priv->comp_status); out: qla2x00_rel_sp(sp); @@ -356,6 +370,8 @@ static int qla_nvme_ls_req(struct nvme_f dma_sync_single_for_device(&ha->pdev->dev, nvme->u.nvme.cmd_dma, fd->rqstlen, DMA_TO_DEVICE);
+ sp->flags |= SRB_DMA_VALID; + rval = qla2x00_start_sp(sp); if (rval != QLA_SUCCESS) { ql_log(ql_log_warn, vha, 0x700e, @@ -363,6 +379,7 @@ static int qla_nvme_ls_req(struct nvme_f wake_up(&sp->nvme_ls_waitq); sp->priv = NULL; priv->sp = NULL; + qla_nvme_ls_unmap(sp, fd); qla2x00_rel_sp(sp); return rval; }