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[v5,21/22] target: Introduce target_get_device() and target_put_device()

Message ID 20170210012852.15735-22-bart.vanassche@sandisk.com (mailing list archive)
State Superseded
Headers show

Commit Message

Bart Van Assche Feb. 10, 2017, 1:28 a.m. UTC 
These new functions will be used by the next patch in this series.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Disseldorp <ddiss@suse.de>
---
 drivers/target/target_core_device.c   | 12 ++++++++++++
 drivers/target/target_core_internal.h |  2 ++
 2 files changed, 14 insertions(+)
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Patch

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index cb7047d66afc..1e6246966b6e 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -955,6 +955,18 @@  int target_configure_device(struct se_device *dev)
 	return ret;
 }
 
+int target_get_device(struct se_device *dev)
+{
+	return config_item_get_unless_zero(&dev->dev_group.cg_item) != NULL;
+}
+EXPORT_SYMBOL(target_get_device);
+
+void target_put_device(struct se_device *dev)
+{
+	config_item_put(&dev->dev_group.cg_item);
+}
+EXPORT_SYMBOL(target_put_device);
+
 void target_free_device(struct se_device *dev)
 {
 	struct se_hba *hba = dev->se_hba;
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index 2b85e6ca7fa7..0b3c3cbfdd55 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -86,6 +86,8 @@  int	core_dev_setup_virtual_lun0(void);
 void	core_dev_release_virtual_lun0(void);
 struct se_device *target_alloc_device(struct se_hba *hba, const char *name);
 int	target_configure_device(struct se_device *dev);
+int	target_get_device(struct se_device *dev);
+void	target_put_device(struct se_device *dev);
 void	target_free_device(struct se_device *);
 
 /* target_core_configfs.c */