nvme-pci: serialize pci resets

Signed-off-by: Sagi Grimberg <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]>
torvalds · Jan 15, 2018 · 79c48cc · 79c48cc
1 parent bf9ae8c
commit 79c48cc
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Showing 3 changed files with 4 additions and 2 deletions.
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
@@ -95,7 +95,7 @@ int nvme_reset_ctrl(struct nvme_ctrl *ctrl)
 }
 EXPORT_SYMBOL_GPL(nvme_reset_ctrl);
 
-static int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
+int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
 {
 	int ret;
 
@@ -104,6 +104,7 @@ static int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
 		flush_work(&ctrl->reset_work);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(nvme_reset_ctrl_sync);
 
 static void nvme_delete_ctrl_work(struct work_struct *work)
 {

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
@@ -394,6 +394,7 @@ int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count);
 void nvme_start_keep_alive(struct nvme_ctrl *ctrl);
 void nvme_stop_keep_alive(struct nvme_ctrl *ctrl);
 int nvme_reset_ctrl(struct nvme_ctrl *ctrl);
+int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl);
 int nvme_delete_ctrl(struct nvme_ctrl *ctrl);
 int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl);
 

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
@@ -2537,7 +2537,7 @@ static void nvme_reset_prepare(struct pci_dev *pdev)
 static void nvme_reset_done(struct pci_dev *pdev)
 {
 	struct nvme_dev *dev = pci_get_drvdata(pdev);
-	nvme_reset_ctrl(&dev->ctrl);
+	nvme_reset_ctrl_sync(&dev->ctrl);
 }
 
 static void nvme_shutdown(struct pci_dev *pdev)