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authorKeith Busch <keith.busch@intel.com>2015-11-28 15:41:02 +0100
committerJens Axboe <axboe@fb.com>2015-12-22 09:38:33 -0700
commit53029b0441bbd263dbb2ee6429572b1732dad4de (patch)
tree28c6524a7fc5c56c019835d12c16c3ef2baca51b /drivers/nvme
parent92f7a1624bbc2361b96db81de89aee1baae40da9 (diff)
downloadop-kernel-dev-53029b0441bbd263dbb2ee6429572b1732dad4de.zip
op-kernel-dev-53029b0441bbd263dbb2ee6429572b1732dad4de.tar.gz
NVMe: Remove device management handles on remove
We don't want to allow new references to open on a device that is removed. This ties the lifetime of these handles to the physical device's presence rather than to the open reference count. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/core.c13
-rw-r--r--drivers/nvme/host/nvme.h1
-rw-r--r--drivers/nvme/host/pci.c1
3 files changed, 11 insertions, 4 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 96e0532..25cb192 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1200,17 +1200,22 @@ static void nvme_release_instance(struct nvme_ctrl *ctrl)
spin_unlock(&dev_list_lock);
}
-static void nvme_free_ctrl(struct kref *kref)
-{
- struct nvme_ctrl *ctrl = container_of(kref, struct nvme_ctrl, kref);
+void nvme_uninit_ctrl(struct nvme_ctrl *ctrl)
+ {
+ device_remove_file(ctrl->device, &dev_attr_reset_controller);
+ device_destroy(nvme_class, MKDEV(nvme_char_major, ctrl->instance));
spin_lock(&dev_list_lock);
list_del(&ctrl->node);
spin_unlock(&dev_list_lock);
+}
+
+static void nvme_free_ctrl(struct kref *kref)
+{
+ struct nvme_ctrl *ctrl = container_of(kref, struct nvme_ctrl, kref);
put_device(ctrl->device);
nvme_release_instance(ctrl);
- device_destroy(nvme_class, MKDEV(nvme_char_major, ctrl->instance));
ctrl->ops->free_ctrl(ctrl);
}
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 2965c46..aa4b42e 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -221,6 +221,7 @@ int nvme_enable_ctrl(struct nvme_ctrl *ctrl, u64 cap);
int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl);
int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
const struct nvme_ctrl_ops *ops, unsigned long quirks);
+void nvme_uninit_ctrl(struct nvme_ctrl *ctrl);
void nvme_put_ctrl(struct nvme_ctrl *ctrl);
int nvme_init_identify(struct nvme_ctrl *ctrl);
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index a909a8b..c83f0d8 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2373,6 +2373,7 @@ static void nvme_remove(struct pci_dev *pdev)
flush_work(&dev->reset_work);
flush_work(&dev->scan_work);
nvme_remove_namespaces(&dev->ctrl);
+ nvme_uninit_ctrl(&dev->ctrl);
nvme_dev_shutdown(dev);
nvme_dev_remove_admin(dev);
nvme_free_queues(dev, 0);
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