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Subject[PATCH] ARM: shmobile: Remove redundant cpu_disable implementation
Date
By default only the non-boot CPUs can be hotplugged if the
smp_operations structure doesn't have the cpu_disable function
pointer set. r8a7779_cpu_disable() implements the same logic,
only non-boot CPUs can be hotplugged, so it's redundant to
override the default behavior.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
arch/arm/mach-shmobile/smp-r8a7779.c | 7 -------
1 file changed, 7 deletions(-)

diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c
index 3f761f839043..b45206f93ddf 100644
--- a/arch/arm/mach-shmobile/smp-r8a7779.c
+++ b/arch/arm/mach-shmobile/smp-r8a7779.c
@@ -124,19 +124,12 @@ static int r8a7779_cpu_kill(unsigned int cpu)

return 0;
}
-
-static int r8a7779_cpu_disable(unsigned int cpu)
-{
- /* only CPU1->3 have power domains, do not allow hotplug of CPU0 */
- return cpu == 0 ? -EPERM : 0;
-}
#endif /* CONFIG_HOTPLUG_CPU */

struct smp_operations r8a7779_smp_ops __initdata = {
.smp_prepare_cpus = r8a7779_smp_prepare_cpus,
.smp_boot_secondary = r8a7779_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
- .cpu_disable = r8a7779_cpu_disable,
.cpu_die = shmobile_smp_scu_cpu_die,
.cpu_kill = r8a7779_cpu_kill,
#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


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