Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755127Ab3HPC3D (ORCPT ); Thu, 15 Aug 2013 22:29:03 -0400 Received: from mail-pd0-f174.google.com ([209.85.192.174]:40978 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754508Ab3HPC26 (ORCPT ); Thu, 15 Aug 2013 22:28:58 -0400 From: Viresh Kumar To: rjw@sisk.pl Cc: linaro-kernel@lists.linaro.org, patches@linaro.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Viresh Kumar Subject: [PATCH 25/34] cpufreq: ppc: remove calls to cpufreq_notify_transition() Date: Fri, 16 Aug 2013 07:55:22 +0530 Message-Id: <95d6f504e95c5508e9597ed60c3a91b47e5b741d.1376619363.git.viresh.kumar@linaro.org> X-Mailer: git-send-email 1.7.12.rc2.18.g61b472e In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3761 Lines: 118 Most of the drivers do following in their ->target_index() routines: struct cpufreq_freqs freqs; freqs.old = old freq... freqs.new = new freq... cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); /* Change rate here */ cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); This is replicated over all cpufreq drivers today and there doesn't exists a good enough reason why this shouldn't be moved to cpufreq core instead. Earlier patches have added support in cpufreq core to do cpufreq notification on frequency change, this one removes it from this driver. Some related minor cleanups are also done along with it. Signed-off-by: Viresh Kumar --- drivers/cpufreq/ppc-corenet-cpufreq.c | 19 +------------------ drivers/cpufreq/ppc_cbe_cpufreq.c | 19 +------------------ 2 files changed, 2 insertions(+), 36 deletions(-) diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index 79d8e9c..3f7be46 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -69,8 +69,6 @@ static const struct soc_data sdata[] = { static u32 min_cpufreq; static const u32 *fmask; -/* serialize frequency changes */ -static DEFINE_MUTEX(cpufreq_lock); static DEFINE_PER_CPU(struct cpu_data *, cpu_data); /* cpumask in a cluster */ @@ -253,26 +251,11 @@ static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy) static int corenet_cpufreq_target(struct cpufreq_policy *policy, unsigned int index) { - struct cpufreq_freqs freqs; struct clk *parent; - int ret; struct cpu_data *data = per_cpu(cpu_data, policy->cpu); - freqs.old = policy->cur; - freqs.new = data->table[index].frequency; - - mutex_lock(&cpufreq_lock); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - parent = of_clk_get(data->parent, data->table[index].driver_data); - ret = clk_set_parent(data->clk, parent); - if (ret) - freqs.new = freqs.old; - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - mutex_unlock(&cpufreq_lock); - - return ret; + return clk_set_parent(data->clk, parent); } static struct cpufreq_driver ppc_corenet_cpufreq_driver = { diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c index 52f707d..e42ca9c 100644 --- a/drivers/cpufreq/ppc_cbe_cpufreq.c +++ b/drivers/cpufreq/ppc_cbe_cpufreq.c @@ -30,9 +30,6 @@ #include "ppc_cbe_cpufreq.h" -static DEFINE_MUTEX(cbe_switch_mutex); - - /* the CBE supports an 8 step frequency scaling */ static struct cpufreq_frequency_table cbe_freqs[] = { {1, 0}, @@ -131,27 +128,13 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy) static int cbe_cpufreq_target(struct cpufreq_policy *policy, unsigned int cbe_pmode_new) { - int rc; - struct cpufreq_freqs freqs; - - freqs.old = policy->cur; - freqs.new = cbe_freqs[cbe_pmode_new].frequency; - - mutex_lock(&cbe_switch_mutex); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - pr_debug("setting frequency for cpu %d to %d kHz, " \ "1/%d of max frequency\n", policy->cpu, cbe_freqs[cbe_pmode_new].frequency, cbe_freqs[cbe_pmode_new].driver_data); - rc = set_pmode(policy->cpu, cbe_pmode_new); - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - mutex_unlock(&cbe_switch_mutex); - - return rc; + return set_pmode(policy->cpu, cbe_pmode_new); } static struct cpufreq_driver cbe_cpufreq_driver = { -- 1.7.12.rc2.18.g61b472e -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/