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| author |   Michael Ellerman <mpe@ellerman.id.au> | 2017-04-24 20:46:59 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-03 14:45:38 +1000 |
| commit | 3f2290e1b5192fdfa74f012220a8d90067beb076 (patch) | |
| tree | d789e4a7958fcde2c25d55d7e436452f461bcc8f /arch/powerpc/kernel | |
| parent | powerpc/smp: Document irq enable/disable after migrating IRQs (diff) | |
| download | linux-dev-3f2290e1b5192fdfa74f012220a8d90067beb076.tar.xz linux-dev-3f2290e1b5192fdfa74f012220a8d90067beb076.zip | |
powerpc/sysfs: Move #ifdef CONFIG_HOTPLUG_CPU out of the function body
The entire body of unregister_cpu_online() is inside an #ifdef
CONFIG_HOTPLUG_CPU block. This is ugly and means we create an empty function
when hotplug is disabled for no reason.
Instead move the #ifdef out of the function body and define the function to be
NULL in the else case. This means we'll pass NULL to cpuhp_setup_state(), but
that's fine because it accepts NULL to mean there is no teardown callback, which
is exactly what we want.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/sysfs.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index 949957b97ead..4437c70c7c2b 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -789,9 +789,9 @@ static int register_cpu_online(unsigned int cpu) return 0; } +#ifdef CONFIG_HOTPLUG_CPU static int unregister_cpu_online(unsigned int cpu) { -#ifdef CONFIG_HOTPLUG_CPU struct cpu *c = &per_cpu(cpu_devices, cpu); struct device *s = &c->dev; struct device_attribute *attrs, *pmc_attrs; @@ -870,9 +870,11 @@ static int unregister_cpu_online(unsigned int cpu) cacheinfo_cpu_offline(cpu); of_node_put(s->of_node); s->of_node = NULL; -#endif /* CONFIG_HOTPLUG_CPU */ return 0; } +#else /* !CONFIG_HOTPLUG_CPU */ +#define unregister_cpu_online NULL +#endif #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE ssize_t arch_cpu_probe(const char *buf, size_t count) |