From: "Mark A. Greer" <mgreer@xxxxxxxxxxxxxxx> Currently, the OMAP3 cpuidle driver calls omap3_enter_idle() which calls omap_sram_idle(). omap_sram_idle() eventually causes a 'wfi' instruction to be executed effectively putting the system to sleep. It is assumed that an I/O wake-up event will occur to wake the system up again. This doesn't work on systems that don't support I/O wake-ups (indicated by omap3_has_io_wakeup() returning false). To handle this, follow the same path in omap3_enter_idle() that would be followed if an interrupt were pending. Signed-off-by: Mark A. Greer <mgreer@xxxxxxxxxxxxxxx> --- arch/arm/mach-omap2/cpuidle34xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c index 5358664..12cf81d 100644 --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -100,7 +100,7 @@ static int __omap3_enter_idle(struct cpuidle_device *dev, pwrdm_set_next_pwrst(mpu_pd, mpu_state); pwrdm_set_next_pwrst(core_pd, core_state); - if (omap_irq_pending() || need_resched()) + if (omap_irq_pending() || need_resched() || !omap3_has_io_wakeup()) goto return_sleep_time; /* Deny idle for C1 */ -- 1.7.9.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
