The initialization of clocks uses mutexes, but we execute the resume in an interrupt context. We therefore have to hand this task to a non-interrupt. Adapted from a patch by Andy Green. Index: linux-2.6.24/arch/arm/plat-s3c24xx/time.c =================================================================== --- linux-2.6.24.orig/arch/arm/plat-s3c24xx/time.c +++ linux-2.6.24/arch/arm/plat-s3c24xx/time.c @@ -255,8 +255,24 @@ static void __init s3c2410_timer_init (v setup_irq(IRQ_TIMER4, &s3c2410_timer_irq); } +static void s3c2410_timer_resume_work(struct work_struct *work) +{ + s3c2410_timer_setup(); +} + +static void s3c2410_timer_resume(void) +{ + static DECLARE_WORK(work, s3c2410_timer_resume_work); + int res; + + res = schedule_work(&work); + if (!res) + printk(KERN_ERR + "s3c2410_timer_resume_work already queued ???\n"); +} + struct sys_timer s3c24xx_timer = { .init = s3c2410_timer_init, .offset = s3c2410_gettimeoffset, - .resume = s3c2410_timer_setup + .resume = s3c2410_timer_resume, };