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authorJames Smart <jsmart2021@gmail.com>2020-04-03 07:33:20 -0700
committerChristoph Hellwig <hch@lst.de>2020-04-04 09:09:39 +0200
commit8c5c660529209a0e324c1c1a35ce3f83d67a2aa5 (patch)
treef2d9ed8ed3cf9403e6b35b977a6329f12cf1b6c7 /drivers/nvme/host/fc.c
parent657f1975e9d9c880fa13030e88ba6cc84964f1db (diff)
nvme-fc: Revert "add module to ops template to allow module references"
The original patch was to resolve the lldd being able to be unloaded while being used to talk to the boot device of the system. However, the end result of the original patch is that any driver unload while a nvme controller is live via the lldd is now being prohibited. Given the module reference, the module teardown routine can't be called, thus there's no way, other than manual actions to terminate the controllers. Fixes: 863fbae929c7 ("nvme_fc: add module to ops template to allow module references") Cc: <stable@vger.kernel.org> # v5.4+ Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/host/fc.c')
-rw-r--r--drivers/nvme/host/fc.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index a8bf2fb1287b..7dfc4a2ecf1e 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -342,8 +342,7 @@ nvme_fc_register_localport(struct nvme_fc_port_info *pinfo,
!template->ls_req || !template->fcp_io ||
!template->ls_abort || !template->fcp_abort ||
!template->max_hw_queues || !template->max_sgl_segments ||
- !template->max_dif_sgl_segments || !template->dma_boundary ||
- !template->module) {
+ !template->max_dif_sgl_segments || !template->dma_boundary) {
ret = -EINVAL;
goto out_reghost_failed;
}
@@ -2016,7 +2015,6 @@ nvme_fc_ctrl_free(struct kref *ref)
{
struct nvme_fc_ctrl *ctrl =
container_of(ref, struct nvme_fc_ctrl, ref);
- struct nvme_fc_lport *lport = ctrl->lport;
unsigned long flags;
if (ctrl->ctrl.tagset) {
@@ -2043,7 +2041,6 @@ nvme_fc_ctrl_free(struct kref *ref)
if (ctrl->ctrl.opts)
nvmf_free_options(ctrl->ctrl.opts);
kfree(ctrl);
- module_put(lport->ops->module);
}
static void
@@ -3074,15 +3071,10 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
goto out_fail;
}
- if (!try_module_get(lport->ops->module)) {
- ret = -EUNATCH;
- goto out_free_ctrl;
- }
-
idx = ida_simple_get(&nvme_fc_ctrl_cnt, 0, 0, GFP_KERNEL);
if (idx < 0) {
ret = -ENOSPC;
- goto out_mod_put;
+ goto out_free_ctrl;
}
ctrl->ctrl.opts = opts;
@@ -3232,8 +3224,6 @@ out_free_queues:
out_free_ida:
put_device(ctrl->dev);
ida_simple_remove(&nvme_fc_ctrl_cnt, ctrl->cnum);
-out_mod_put:
- module_put(lport->ops->module);
out_free_ctrl:
kfree(ctrl);
out_fail: