diff options
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/block/genhd.c b/block/genhd.c index 2b2a936cf848..27a410d31087 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -208,14 +208,17 @@ struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter) part = rcu_dereference(ptbl->part[piter->idx]); if (!part) continue; + get_device(part_to_dev(part)); + piter->part = part; if (!part_nr_sects_read(part) && !(piter->flags & DISK_PITER_INCL_EMPTY) && !(piter->flags & DISK_PITER_INCL_EMPTY_PART0 && - piter->idx == 0)) + piter->idx == 0)) { + put_device(part_to_dev(part)); + piter->part = NULL; continue; + } - get_device(part_to_dev(part)); - piter->part = part; piter->idx += inc; break; } @@ -579,7 +582,8 @@ static int exact_lock(dev_t devt, void *data) return 0; } -static void register_disk(struct device *parent, struct gendisk *disk) +static void register_disk(struct device *parent, struct gendisk *disk, + const struct attribute_group **groups) { struct device *ddev = disk_to_dev(disk); struct block_device *bdev; @@ -594,6 +598,10 @@ static void register_disk(struct device *parent, struct gendisk *disk) /* delay uevents, until we scanned partition table */ dev_set_uevent_suppress(ddev, 1); + if (groups) { + WARN_ON(ddev->groups); + ddev->groups = groups; + } if (device_add(ddev)) return; if (!sysfs_deprecated) { @@ -615,10 +623,8 @@ static void register_disk(struct device *parent, struct gendisk *disk) disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj); disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj); - if (disk->flags & GENHD_FL_HIDDEN) { - dev_set_uevent_suppress(ddev, 0); + if (disk->flags & GENHD_FL_HIDDEN) return; - } /* No minors to use for partitions */ if (!disk_part_scan_enabled(disk)) @@ -649,16 +655,19 @@ exit: kobject_uevent(&part_to_dev(part)->kobj, KOBJ_ADD); disk_part_iter_exit(&piter); - err = sysfs_create_link(&ddev->kobj, - &disk->queue->backing_dev_info->dev->kobj, - "bdi"); - WARN_ON(err); + if (disk->queue->backing_dev_info->dev) { + err = sysfs_create_link(&ddev->kobj, + &disk->queue->backing_dev_info->dev->kobj, + "bdi"); + WARN_ON(err); + } } /** * __device_add_disk - add disk information to kernel list * @parent: parent device for the disk * @disk: per-device partitioning information + * @groups: Additional per-device sysfs groups * @register_queue: register the queue if set to true * * This function registers the partitioning information in @disk @@ -667,6 +676,7 @@ exit: * FIXME: error handling */ static void __device_add_disk(struct device *parent, struct gendisk *disk, + const struct attribute_group **groups, bool register_queue) { dev_t devt; @@ -710,7 +720,7 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk, blk_register_region(disk_devt(disk), disk->minors, NULL, exact_match, exact_lock, disk); } - register_disk(parent, disk); + register_disk(parent, disk, groups); if (register_queue) blk_register_queue(disk); @@ -724,15 +734,17 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk, blk_integrity_add(disk); } -void device_add_disk(struct device *parent, struct gendisk *disk) +void device_add_disk(struct device *parent, struct gendisk *disk, + const struct attribute_group **groups) + { - __device_add_disk(parent, disk, true); + __device_add_disk(parent, disk, groups, true); } EXPORT_SYMBOL(device_add_disk); void device_add_disk_no_queue_reg(struct device *parent, struct gendisk *disk) { - __device_add_disk(parent, disk, false); + __device_add_disk(parent, disk, NULL, false); } EXPORT_SYMBOL(device_add_disk_no_queue_reg); |