diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-13 19:29:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-23 13:20:36 +0100 |
| commit | 9cc61e5fbd619eea0401f519e7bac72fe3d4d1e8 (patch) | |
| tree | ce3743bdf6965397a8b5129653edc52c1b922cdb /drivers/base/base.h | |
| parent | bf6479dbe743ca343fa122aaffbe9dcb1de80a51 (diff) | |
driver core: bus: move dev_root out of struct bus_type
Now that all accesses of dev_root is through the bus_get_dev_root()
call, move the pointer out of struct bus_type and into the private
dynamic structure, subsys_private.
With this change, there is no modifiable portions of struct bus_type so
it can be marked as a constant structure and moved to read-only memory.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230313182918.1312597-22-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/base.h')
| -rw-r--r-- | drivers/base/base.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h index b055eba1ec30..f1034e27e651 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -27,6 +27,7 @@ * on this bus. * @bus - pointer back to the struct bus_type that this structure is associated * with. + * @dev_root: Default device to use as the parent. * * @glue_dirs - "glue" directory to put in-between the parent device to * avoid namespace conflicts @@ -49,6 +50,7 @@ struct subsys_private { struct blocking_notifier_head bus_notifier; unsigned int drivers_autoprobe:1; struct bus_type *bus; + struct device *dev_root; struct kset glue_dirs; struct class *class; |