tcmu: add helper to check if dev was configured

This adds a helper to check if the dev was configured. It
will be used in the next patch to prevent updates to some
config settings after the device has been setup.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 4339ab2..892b311 100644 (file)
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -998,6 +998,11 @@ static void tcmu_dev_call_rcu(struct rcu_head *p)
        kfree(udev);
 }
 
+static bool tcmu_dev_configured(struct tcmu_dev *udev)
+{
+       return udev->uio_info.uio_dev ? true : false;
+}
+
 static void tcmu_free_device(struct se_device *dev)
 {
        struct tcmu_dev *udev = TCMU_DEV(dev);
@@ -1019,8 +1024,7 @@ static void tcmu_free_device(struct se_device *dev)
        spin_unlock_irq(&udev->commands_lock);
        WARN_ON(!all_expired);
 
-       /* Device was configured */
-       if (udev->uio_info.uio_dev) {
+       if (tcmu_dev_configured(udev)) {
                tcmu_netlink_event(TCMU_CMD_REMOVED_DEVICE, udev->uio_info.name,
                                   udev->uio_info.uio_dev->minor);