From: Viresh Kumar <viresh.kumar@linaro.org> To: rjw@sisk.pl Cc: cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linaro-dev@lists.linaro.org, patches@linaro.org, pdsw-power-team@arm.com, Viresh Kumar <viresh.kumar@linaro.org> Subject: [PATCH RESEND] cpufreq: Make sure target freq is within limits Date: Fri, 26 Oct 2012 18:05:21 +0530 [thread overview] Message-ID: <f79c0841be1ae16e1f2bd9084ed9a158eb171eb0.1351254846.git.viresh.kumar@linaro.org> (raw) __cpufreq_driver_target() must not pass target frequency beyond the limits of current policy. Today most of cpufreq platform drivers are doing this check in their target routines. Why not move it to __cpufreq_driver_target(). Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- Hi Rafael, Resend doesn't contain any change, but fixed commit log drivers/cpufreq/cpufreq.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 28dc134..2f5ac2d 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1470,12 +1470,19 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, unsigned int relation) { int retval = -EINVAL; + unsigned int old_target_freq = target_freq; if (cpufreq_disabled()) return -ENODEV; - pr_debug("target for CPU %u: %u kHz, relation %u\n", policy->cpu, - target_freq, relation); + /* Make sure that target_freq is within supported range */ + if (target_freq > policy->max) + target_freq = policy->max; + if (target_freq < policy->min) + target_freq = policy->min; + + pr_debug("target for CPU %u: %u kHz, relation %u, requested %u kHz\n", + policy->cpu, target_freq, relation, old_target_freq); if (target_freq == policy->cur) return 0; -- 1.7.12.rc2.18.g61b472e
WARNING: multiple messages have this Message-ID (diff)
From: viresh.kumar@linaro.org (Viresh Kumar) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH RESEND] cpufreq: Make sure target freq is within limits Date: Fri, 26 Oct 2012 18:05:21 +0530 [thread overview] Message-ID: <f79c0841be1ae16e1f2bd9084ed9a158eb171eb0.1351254846.git.viresh.kumar@linaro.org> (raw) __cpufreq_driver_target() must not pass target frequency beyond the limits of current policy. Today most of cpufreq platform drivers are doing this check in their target routines. Why not move it to __cpufreq_driver_target(). Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- Hi Rafael, Resend doesn't contain any change, but fixed commit log drivers/cpufreq/cpufreq.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 28dc134..2f5ac2d 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1470,12 +1470,19 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, unsigned int relation) { int retval = -EINVAL; + unsigned int old_target_freq = target_freq; if (cpufreq_disabled()) return -ENODEV; - pr_debug("target for CPU %u: %u kHz, relation %u\n", policy->cpu, - target_freq, relation); + /* Make sure that target_freq is within supported range */ + if (target_freq > policy->max) + target_freq = policy->max; + if (target_freq < policy->min) + target_freq = policy->min; + + pr_debug("target for CPU %u: %u kHz, relation %u, requested %u kHz\n", + policy->cpu, target_freq, relation, old_target_freq); if (target_freq == policy->cur) return 0; -- 1.7.12.rc2.18.g61b472e
next reply other threads:[~2012-10-26 12:35 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-10-26 12:35 Viresh Kumar [this message] 2012-10-26 12:35 ` [PATCH RESEND] cpufreq: Make sure target freq is within limits Viresh Kumar 2012-10-31 0:44 ` Rafael J. Wysocki 2012-10-31 0:44 ` Rafael J. Wysocki 2012-10-31 0:44 ` Rafael J. Wysocki
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