summaryrefslogtreecommitdiff
path: root/drivers/scsi
diff options
context:
space:
mode:
authorJames Smart <jsmart2021@gmail.com>2019-11-14 15:15:26 -0800
committerKeith Busch <kbusch@kernel.org>2019-11-27 02:48:27 +0900
commit863fbae929c7a5b64e96b8a3ffb34a29eefb9f8f (patch)
treeb8a57ecdd76237496683d55d0b00b2968551af0e /drivers/scsi
parent52e6d8ed16fdf9f1d2923a2b036222a5ac834b1d (diff)
nvme_fc: add module to ops template to allow module references
In nvme-fc: it's possible to have connected active controllers and as no references are taken on the LLDD, the LLDD can be unloaded. The controller would enter a reconnect state and as long as the LLDD resumed within the reconnect timeout, the controller would resume. But if a namespace on the controller is the root device, allowing the driver to unload can be problematic. To reload the driver, it may require new io to the boot device, and as it's no longer connected we get into a catch-22 that eventually fails, and the system locks up. Fix this issue by taking a module reference for every connected controller (which is what the core layer did to the transport module). Reference is cleared when the controller is removed. Acked-by: Himanshu Madhani <hmadhani@marvell.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/lpfc/lpfc_nvme.c2
-rw-r--r--drivers/scsi/qla2xxx/qla_nvme.c1
2 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index a227e36cbdc2..8e0f03ef346b 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -1976,6 +1976,8 @@ out_unlock:
/* Declare and initialization an instance of the FC NVME template. */
static struct nvme_fc_port_template lpfc_nvme_template = {
+ .module = THIS_MODULE,
+
/* initiator-based functions */
.localport_delete = lpfc_nvme_localport_delete,
.remoteport_delete = lpfc_nvme_remoteport_delete,
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index 6cc19e060afc..6e4d71302534 100644
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -610,6 +610,7 @@ static void qla_nvme_remoteport_delete(struct nvme_fc_remote_port *rport)
}
static struct nvme_fc_port_template qla_nvme_fc_transport = {
+ .module = THIS_MODULE,
.localport_delete = qla_nvme_localport_delete,
.remoteport_delete = qla_nvme_remoteport_delete,
.create_queue = qla_nvme_alloc_queue,