Re: [rtc-linux] Re: [PATCH] rtc: Make rtc_update_irq callable withirqs enabled

[Alessandro Zummo]

On Thu, 23 Apr 2009 12:45:32 -0700
David Brownell <david-b@xxxxxxxxxxx> wrote:

> If the spinlock is *ever* acquired with IRQs disabled,
> it must *always* be acquired that way.
> 
> The typical use is ... from IRQ context, which will in
> some cases mean IRQs disabled.  QED.

 the spinlock could be acquired with IRQs disabled,
 with spin_lock_irq, in the alarm setup functions and
 acquired with the standard spinlock calls in the irq
 handler.

 would it work?

-- 

 Best regards,

 Alessandro Zummo,
  Tower Technologies - Torino, Italy

  http://www.towertech.it

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