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Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/core.c8
-rw-r--r--drivers/nvme/host/nvme.h1
-rw-r--r--drivers/nvme/host/pci.c22
3 files changed, 20 insertions, 11 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 150e49723c15..6a9dd68c0f4f 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1253,6 +1253,7 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
* effects say only one namespace is affected.
*/
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK)) {
+ mutex_lock(&ctrl->scan_lock);
nvme_start_freeze(ctrl);
nvme_wait_freeze(ctrl);
}
@@ -1281,8 +1282,10 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
*/
if (effects & NVME_CMD_EFFECTS_LBCC)
nvme_update_formats(ctrl);
- if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK))
+ if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK)) {
nvme_unfreeze(ctrl);
+ mutex_unlock(&ctrl->scan_lock);
+ }
if (effects & NVME_CMD_EFFECTS_CCC)
nvme_init_identify(ctrl);
if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC))
@@ -3401,6 +3404,7 @@ static void nvme_scan_work(struct work_struct *work)
if (nvme_identify_ctrl(ctrl, &id))
return;
+ mutex_lock(&ctrl->scan_lock);
nn = le32_to_cpu(id->nn);
if (ctrl->vs >= NVME_VS(1, 1, 0) &&
!(ctrl->quirks & NVME_QUIRK_IDENTIFY_CNS)) {
@@ -3409,6 +3413,7 @@ static void nvme_scan_work(struct work_struct *work)
}
nvme_scan_ns_sequential(ctrl, nn);
out_free_id:
+ mutex_unlock(&ctrl->scan_lock);
kfree(id);
down_write(&ctrl->namespaces_rwsem);
list_sort(NULL, &ctrl->namespaces, ns_cmp);
@@ -3652,6 +3657,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
ctrl->state = NVME_CTRL_NEW;
spin_lock_init(&ctrl->lock);
+ mutex_init(&ctrl->scan_lock);
INIT_LIST_HEAD(&ctrl->namespaces);
init_rwsem(&ctrl->namespaces_rwsem);
ctrl->dev = dev;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index ab961bdeea89..c4a1bb41abf0 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -154,6 +154,7 @@ struct nvme_ctrl {
enum nvme_ctrl_state state;
bool identified;
spinlock_t lock;
+ struct mutex scan_lock;
const struct nvme_ctrl_ops *ops;
struct request_queue *admin_q;
struct request_queue *connect_q;
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 9bc585415d9b..022ea1ee63f8 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2557,16 +2557,7 @@ static void nvme_reset_work(struct work_struct *work)
if (dev->ctrl.ctrl_config & NVME_CC_ENABLE)
nvme_dev_disable(dev, false);
- /*
- * Introduce CONNECTING state from nvme-fc/rdma transports to mark the
- * initializing procedure here.
- */
- if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) {
- dev_warn(dev->ctrl.device,
- "failed to mark controller CONNECTING\n");
- goto out;
- }
-
+ mutex_lock(&dev->shutdown_lock);
result = nvme_pci_enable(dev);
if (result)
goto out;
@@ -2585,6 +2576,17 @@ static void nvme_reset_work(struct work_struct *work)
*/
dev->ctrl.max_hw_sectors = NVME_MAX_KB_SZ << 1;
dev->ctrl.max_segments = NVME_MAX_SEGS;
+ mutex_unlock(&dev->shutdown_lock);
+
+ /*
+ * Introduce CONNECTING state from nvme-fc/rdma transports to mark the
+ * initializing procedure here.
+ */
+ if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) {
+ dev_warn(dev->ctrl.device,
+ "failed to mark controller CONNECTING\n");
+ goto out;
+ }
result = nvme_init_identify(&dev->ctrl);
if (result)