cpuidle: poll_state: Fix default time limit
authorDoug Smythies <doug.smythies@gmail.com>
Wed, 30 Jan 2019 16:28:22 +0000 (08:28 -0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 30 Jan 2019 21:57:42 +0000 (22:57 +0100)
The default time is declared in units of microsecnds,
but is used as nanoseconds, resulting in significant
accounting errors for idle state 0 time when all idle
states deeper than 0 are disabled.

Under these unusual conditions, we don't really care
about the poll time limit anyhow.

Fixes: 800fb34a99ce ("cpuidle: poll_state: Disregard disable idle states")
Signed-off-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpuidle/poll_state.c

index b17d153e724fd3c693930ad67583e4804a8b580d..23a1b27579a54d5e35ea373421aec47597d9f241 100644 (file)
@@ -21,7 +21,7 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev,
        local_irq_enable();
        if (!current_set_polling_and_test()) {
                unsigned int loop_count = 0;
-               u64 limit = TICK_USEC;
+               u64 limit = TICK_NSEC;
                int i;
 
                for (i = 1; i < drv->state_count; i++) {