Re: [rtc-linux] Re: [PATCH] rtc: Make rtc_update_irq callable with irqs enabled
From: David Brownell
Date: Fri Apr 24 2009 - 07:11:12 EST
On Friday 24 April 2009, Alessandro Zummo wrote:
> I'm not tying to fix call issues or lockdep politics,
> just to understand if it's possible to avoid disabling the IRQs.
>
> i.e.,
>
> use spin_lock() in the IRQ handler and spin_lock_irq/irq_save
> in the setup functions.
I think you're describing how the *current* scheme is supposed
to work ... except that some IRQ handlers aren't calling the
rtc_update_irq() routine with IRQs blocked.
Yes, that current scheme works ... modulo those buggy handlers.
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