From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from na01-by2-obe.outbound.protection.outlook.com (mail-by2lp0237.outbound.protection.outlook.com [207.46.163.237]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 346081A0041 for ; Thu, 5 Jun 2014 07:07:35 +1000 (EST) From: Ed Swarthout To: , , , Subject: [PATCH] cpufreq: ppc-corenet-cpu-freq: do_div use quotient Date: Wed, 4 Jun 2014 15:32:53 -0500 Message-ID: <1401913973-22536-1-git-send-email-Ed.Swarthout@freescale.com> In-Reply-To: <1398701898-68201-1-git-send-email-tim.gardner@canonical.com> References: <1398701898-68201-1-git-send-email-tim.gardner@canonical.com> MIME-Version: 1.0 Content-Type: text/plain List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 6712d2931933ada259b82f06c03a855b19937074 (cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error) used the remainder from do_div instead of the quotient. Fix that and add one to ensure minimum is met. Signed-off-by: Ed Swarthout --- drivers/cpufreq/ppc-corenet-cpufreq.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index 0af618a..3607070 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -138,7 +138,7 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) struct cpufreq_frequency_table *table; struct cpu_data *data; unsigned int cpu = policy->cpu; - u64 transition_latency_hz; + u64 u64temp; np = of_get_cpu_node(cpu, NULL); if (!np) @@ -206,9 +206,10 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) for_each_cpu(i, per_cpu(cpu_mask, cpu)) per_cpu(cpu_data, i) = data; - transition_latency_hz = 12ULL * NSEC_PER_SEC; - policy->cpuinfo.transition_latency = - do_div(transition_latency_hz, fsl_get_sys_freq()); + /* Minimum transition latency is 12 platform clocks */ + u64temp = 12ULL * NSEC_PER_SEC; + do_div(u64temp, fsl_get_sys_freq()); + policy->cpuinfo.transition_latency = u64temp + 1; of_node_put(np); -- 1.9.1