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authorKay Sievers <kay.sievers@vrfy.org>2007-05-21 22:08:01 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 20:40:36 -0800
commitedfaa7c36574f1bf09c65ad602412db9da5f96bf (patch)
treed591b80ff9229e4845e41d68e2f4c5aadb017027 /drivers/base/core.c
parent09f82ea92822a7bbb7e816508abbda47ed54a77f (diff)
downloadblackbird-op-linux-edfaa7c36574f1bf09c65ad602412db9da5f96bf.tar.gz
blackbird-op-linux-edfaa7c36574f1bf09c65ad602412db9da5f96bf.zip
Driver core: convert block from raw kobjects to core devices
This moves the block devices to /sys/class/block. It will create a flat list of all block devices, with the disks and partitions in one directory. For compatibility /sys/block is created and contains symlinks to the disks. /sys/class/block |-- sda -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda |-- sda1 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1 |-- sda10 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda10 |-- sda5 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda5 |-- sda6 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda6 |-- sda7 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda7 |-- sda8 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda8 |-- sda9 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda9 `-- sr0 -> ../../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0 /sys/block/ |-- sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda `-- sr0 -> ../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0 Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/core.c')
-rw-r--r--drivers/base/core.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 13cae18936c5..06e8738ab263 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -671,14 +671,15 @@ static int device_add_class_symlinks(struct device *dev)
#ifdef CONFIG_SYSFS_DEPRECATED
/* stacked class devices need a symlink in the class directory */
- if (dev->kobj.parent != &dev->class->subsys.kobj) {
+ if (dev->kobj.parent != &dev->class->subsys.kobj &&
+ dev->type != &part_type) {
error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
dev->bus_id);
if (error)
goto out_subsys;
}
- if (dev->parent) {
+ if (dev->parent && dev->type != &part_type) {
struct device *parent = dev->parent;
char *class_name;
@@ -707,10 +708,11 @@ static int device_add_class_symlinks(struct device *dev)
return 0;
out_device:
- if (dev->parent)
+ if (dev->parent && dev->type != &part_type)
sysfs_remove_link(&dev->kobj, "device");
out_busid:
- if (dev->kobj.parent != &dev->class->subsys.kobj)
+ if (dev->kobj.parent != &dev->class->subsys.kobj &&
+ dev->type != &part_type)
sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
#else
/* link in the class directory pointing to the device */
@@ -719,7 +721,7 @@ out_busid:
if (error)
goto out_subsys;
- if (dev->parent) {
+ if (dev->parent && dev->type != &part_type) {
error = sysfs_create_link(&dev->kobj, &dev->parent->kobj,
"device");
if (error)
@@ -743,7 +745,7 @@ static void device_remove_class_symlinks(struct device *dev)
return;
#ifdef CONFIG_SYSFS_DEPRECATED
- if (dev->parent) {
+ if (dev->parent && dev->type != &part_type) {
char *class_name;
class_name = make_class_name(dev->class->name, &dev->kobj);
@@ -754,10 +756,11 @@ static void device_remove_class_symlinks(struct device *dev)
sysfs_remove_link(&dev->kobj, "device");
}
- if (dev->kobj.parent != &dev->class->subsys.kobj)
+ if (dev->kobj.parent != &dev->class->subsys.kobj &&
+ dev->type != &part_type)
sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
#else
- if (dev->parent)
+ if (dev->parent && dev->type != &part_type)
sysfs_remove_link(&dev->kobj, "device");
sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
@@ -925,6 +928,7 @@ struct device * get_device(struct device * dev)
*/
void put_device(struct device * dev)
{
+ /* might_sleep(); */
if (dev)
kobject_put(&dev->kobj);
}
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