From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Wed, 10 Jul 2013 23:15:38 +0100 Subject: [RFC PATCH 3/5] arm64: read enable-method for CPU0 In-Reply-To: <1373494279-24712-1-git-send-email-mark.rutland@arm.com> References: <1373494279-24712-1-git-send-email-mark.rutland@arm.com> Message-ID: <1373494538-24935-1-git-send-email-mark.rutland@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org With the advent of CPU_HOTPLUG, the enable-method property for CPU0 may tells us something useful (i.e. how to hotplug it back on), so we must read it along with all the enable-method for all the other CPUs. This patch ensures that CPU0's enable-method property is read. Signed-off-by: Mark Rutland --- arch/arm64/kernel/smp.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index e3a4fa1..15ec428 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -253,6 +253,8 @@ void __init smp_init_cpus(void) } } + enable_method = of_get_property(dn, "enable-method", NULL); + /* * The numbering scheme requires that the boot CPU * must be assigned logical id 0. Record it so that @@ -268,11 +270,12 @@ void __init smp_init_cpus(void) bootcpu_valid = true; + if (enable_method) + smp_ops[0] = smp_get_ops(enable_method); + /* - * cpu_logical_map has already been - * initialized and the boot cpu doesn't need - * the enable-method so continue without - * incrementing cpu. + * cpu_logical_map has already been initialized so + * continue without incrementing cpu. */ continue; } @@ -280,10 +283,6 @@ void __init smp_init_cpus(void) if (cpu >= NR_CPUS) goto next; - /* - * We currently support only the "spin-table" enable-method. - */ - enable_method = of_get_property(dn, "enable-method", NULL); if (!enable_method) { pr_err("%s: missing enable-method property\n", dn->full_name); -- 1.7.9.5