mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

scsi: qla2xxx: Fix missed DMA unmap for NVMe ls requests 

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: e84067d743 ("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>
This commit is contained in:
Arun Easi 2022-03-10 01:25:55 -08:00 committed by Martin K. Petersen
parent db212f2eb3
commit c85ab7d9e2
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/scsi/qla2xxx/qla_nvme.c
View File

@ -175,6 +175,18 @@ 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);
@ -191,6 +203,8 @@ static void qla_nvme_release_ls_cmd_kref(struct kref *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);
@ -361,6 +375,8 @@ static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
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,
@ -368,6 +384,7 @@ static int qla_nvme_ls_req(struct nvme_fc_local_port *lport,
wake_up(&sp->nvme_ls_waitq);
sp->priv = NULL;
priv->sp = NULL;
qla_nvme_ls_unmap(sp, fd);
qla2x00_rel_sp(sp);
return rval;
}