From ed542bed126caeefc6546b276e4af852d4d34f33 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Wed, 4 Oct 2006 07:05:11 -0400 Subject: [SCSI] raid class: handle component-add errors Signed-off-by: Jeff Garzik Signed-off-by: James Bottomley --- drivers/scsi/raid_class.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/raid_class.c b/drivers/scsi/raid_class.c index 327b33a57b0..86e13183c9b 100644 --- a/drivers/scsi/raid_class.c +++ b/drivers/scsi/raid_class.c @@ -215,18 +215,19 @@ static void raid_component_release(struct class_device *cdev) kfree(rc); } -void raid_component_add(struct raid_template *r,struct device *raid_dev, - struct device *component_dev) +int raid_component_add(struct raid_template *r,struct device *raid_dev, + struct device *component_dev) { struct class_device *cdev = attribute_container_find_class_device(&r->raid_attrs.ac, raid_dev); struct raid_component *rc; struct raid_data *rd = class_get_devdata(cdev); + int err; rc = kzalloc(sizeof(*rc), GFP_KERNEL); if (!rc) - return; + return -ENOMEM; INIT_LIST_HEAD(&rc->node); class_device_initialize(&rc->cdev); @@ -239,7 +240,18 @@ void raid_component_add(struct raid_template *r,struct device *raid_dev, list_add_tail(&rc->node, &rd->component_list); rc->cdev.parent = cdev; rc->cdev.class = &raid_class.class; - class_device_add(&rc->cdev); + err = class_device_add(&rc->cdev); + if (err) + goto err_out; + + return 0; + +err_out: + list_del(&rc->node); + rd->component_count--; + put_device(component_dev); + kfree(rc); + return err; } EXPORT_SYMBOL(raid_component_add); -- cgit v1.2.3-70-g09d2