From: Rafael J. Wysocki Date: Mon, 15 Feb 2016 21:15:34 +0000 (+0100) Subject: cpufreq: governor: Avoid irq_work_queue_on() crash on non-SMP ARM X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=b9db42730aeb23f91d7585786de25a260ab04098;p=openwrt%2Fstaging%2Fblogic.git cpufreq: governor: Avoid irq_work_queue_on() crash on non-SMP ARM As it turns out, irq_work_queue_on() will crash if invoked on non-SMP ARM platforms, but in fact it is not necessary to use that function in the cpufreq governor code (as it doesn't matter to that code which CPU will handle the irq_work), so change it to always use irq_work_queue(). Fixes: 8fb47ff100af (cpufreq: governor: Replace timers with utilization update callbacks) Reported-and-tested-by: Guenter Roeck Reported-and-tested-by: Tony Lindgren Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index d41db19a9bb7..580b692d6df4 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -350,15 +350,6 @@ static void dbs_irq_work(struct irq_work *irq_work) schedule_work(&policy_dbs->work); } -static inline void gov_queue_irq_work(struct policy_dbs_info *policy_dbs) -{ -#ifdef CONFIG_SMP - irq_work_queue_on(&policy_dbs->irq_work, smp_processor_id()); -#else - irq_work_queue(&policy_dbs->irq_work); -#endif -} - static void dbs_update_util_handler(struct update_util_data *data, u64 time, unsigned long util, unsigned long max) { @@ -378,7 +369,7 @@ static void dbs_update_util_handler(struct update_util_data *data, u64 time, delta_ns = time - policy_dbs->last_sample_time; if ((s64)delta_ns >= policy_dbs->sample_delay_ns) { policy_dbs->last_sample_time = time; - gov_queue_irq_work(policy_dbs); + irq_work_queue(&policy_dbs->irq_work); return; } }