Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
x86/umwait: move to use bus_get_dev_root()
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>
+6
-2
+6
-2
arch/x86/kernel/cpu/umwait.c
+6
-2
arch/x86/kernel/cpu/umwait.c
···
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* Add umwait control interface. Ignore failure, so at least the
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* default values are set up in case the machine manages to boot.
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*/
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-
dev = cpu_subsys.dev_root;
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-
return sysfs_create_group(&dev->kobj, &umwait_attr_group);
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+
dev = bus_get_dev_root(&cpu_subsys);
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+
if (dev) {
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+
ret = sysfs_create_group(&dev->kobj, &umwait_attr_group);
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+
put_device(dev);
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+
}
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+
return ret;
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}
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device_initcall(umwait_init);