6.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhu Wang wangzhu9@huawei.com
commit 60c5fd2e8f3c42a5abc565ba9876ead1da5ad2b7 upstream.
The raid_component_add() function was added to the kernel tree via patch "[SCSI] embryonic RAID class" (2005). Remove this function since it never has had any callers in the Linux kernel. And also raid_component_release() is only used in raid_component_add(), so it is also removed.
Signed-off-by: Zhu Wang wangzhu9@huawei.com Link: https://lore.kernel.org/r/20230822015254.184270-1-wangzhu9@huawei.com Reviewed-by: Bart Van Assche bvanassche@acm.org Fixes: 04b5b5cb0136 ("scsi: core: Fix possible memory leak if device_add() fails") Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/raid_class.c | 48 --------------------------------------------- include/linux/raid_class.h | 4 --- 2 files changed, 52 deletions(-)
--- a/drivers/scsi/raid_class.c +++ b/drivers/scsi/raid_class.c @@ -209,54 +209,6 @@ raid_attr_ro_state(level); raid_attr_ro_fn(resync); raid_attr_ro_state_fn(state);
-static void raid_component_release(struct device *dev) -{ - struct raid_component *rc = - container_of(dev, struct raid_component, dev); - dev_printk(KERN_ERR, rc->dev.parent, "COMPONENT RELEASE\n"); - put_device(rc->dev.parent); - kfree(rc); -} - -int raid_component_add(struct raid_template *r,struct device *raid_dev, - struct device *component_dev) -{ - struct device *cdev = - attribute_container_find_class_device(&r->raid_attrs.ac, - raid_dev); - struct raid_component *rc; - struct raid_data *rd = dev_get_drvdata(cdev); - int err; - - rc = kzalloc(sizeof(*rc), GFP_KERNEL); - if (!rc) - return -ENOMEM; - - INIT_LIST_HEAD(&rc->node); - device_initialize(&rc->dev); - rc->dev.release = raid_component_release; - rc->dev.parent = get_device(component_dev); - rc->num = rd->component_count++; - - dev_set_name(&rc->dev, "component-%d", rc->num); - list_add_tail(&rc->node, &rd->component_list); - rc->dev.class = &raid_class.class; - err = device_add(&rc->dev); - if (err) - goto err_out; - - return 0; - -err_out: - put_device(&rc->dev); - list_del(&rc->node); - rd->component_count--; - put_device(component_dev); - kfree(rc); - return err; -} -EXPORT_SYMBOL(raid_component_add); - struct raid_template * raid_class_attach(struct raid_function_template *ft) { --- a/include/linux/raid_class.h +++ b/include/linux/raid_class.h @@ -77,7 +77,3 @@ DEFINE_RAID_ATTRIBUTE(enum raid_state, s struct raid_template *raid_class_attach(struct raid_function_template *); void raid_class_release(struct raid_template *); - -int __must_check raid_component_add(struct raid_template *, struct device *, - struct device *); -