From ab3d8e1baaee4b167cc99120f640ee4de6d05d50 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Tue, 1 Sep 2020 11:33:34 +0100 Subject: tee: replace cdev_add + device_add with cdev_device_add Commit 233ed09d7fda ("chardev: add helper function to register char devs with a struct device") added a helper function 'cdev_device_add'. Make use of cdev_device_add in tee_device_register to replace cdev_add and device_add. Since cdev_device_add takes care of setting the kobj->parent, drop explicit initialisation in tee_device_alloc. Signed-off-by: Sudeep Holla Signed-off-by: Jens Wiklander --- drivers/tee/tee_core.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c index 64637e09a095..b4a8b362d78f 100644 --- a/drivers/tee/tee_core.c +++ b/drivers/tee/tee_core.c @@ -917,7 +917,6 @@ struct tee_device *tee_device_alloc(const struct tee_desc *teedesc, cdev_init(&teedev->cdev, &tee_fops); teedev->cdev.owner = teedesc->owner; - teedev->cdev.kobj.parent = &teedev->dev.kobj; dev_set_drvdata(&teedev->dev, driver_data); device_initialize(&teedev->dev); @@ -985,24 +984,15 @@ int tee_device_register(struct tee_device *teedev) return -EINVAL; } - rc = cdev_add(&teedev->cdev, teedev->dev.devt, 1); + rc = cdev_device_add(&teedev->cdev, &teedev->dev); if (rc) { dev_err(&teedev->dev, - "unable to cdev_add() %s, major %d, minor %d, err=%d\n", + "unable to cdev_device_add() %s, major %d, minor %d, err=%d\n", teedev->name, MAJOR(teedev->dev.devt), MINOR(teedev->dev.devt), rc); return rc; } - rc = device_add(&teedev->dev); - if (rc) { - dev_err(&teedev->dev, - "unable to device_add() %s, major %d, minor %d, err=%d\n", - teedev->name, MAJOR(teedev->dev.devt), - MINOR(teedev->dev.devt), rc); - goto err_device_add; - } - rc = sysfs_create_group(&teedev->dev.kobj, &tee_dev_group); if (rc) { dev_err(&teedev->dev, @@ -1014,9 +1004,7 @@ int tee_device_register(struct tee_device *teedev) return 0; err_sysfs_create_group: - device_del(&teedev->dev); -err_device_add: - cdev_del(&teedev->cdev); + cdev_device_del(&teedev->cdev, &teedev->dev); return rc; } EXPORT_SYMBOL_GPL(tee_device_register); @@ -1062,8 +1050,7 @@ void tee_device_unregister(struct tee_device *teedev) if (teedev->flags & TEE_DEVICE_FLAG_REGISTERED) { sysfs_remove_group(&teedev->dev.kobj, &tee_dev_group); - cdev_del(&teedev->cdev); - device_del(&teedev->dev); + cdev_device_del(&teedev->cdev, &teedev->dev); } tee_device_put(teedev); -- cgit v1.2.3-59-g8ed1b