Direct access to the struct bus_type dev_root pointer is going away soon
so replace that with a call to bus_get_dev_root() instead, which is what
it is there for.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lore.kernel.org/r/20230313182918.1312597-10-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Add umwait control interface. Ignore failure, so at least the
* default values are set up in case the machine manages to boot.
*/
- dev = cpu_subsys.dev_root;
- return sysfs_create_group(&dev->kobj, &umwait_attr_group);
+ dev = bus_get_dev_root(&cpu_subsys);
+ if (dev) {
+ ret = sysfs_create_group(&dev->kobj, &umwait_attr_group);
+ put_device(dev);
+ }
+ return ret;
}
device_initcall(umwait_init);