Thread (2 messages) 2 messages, 2 authors, 2011-06-16

Re: [PATCH] omap3: pm: Downgrade WARN for no wakeup source

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From: Kevin Hilman <hidden>
Date: 2011-06-16 15:22:19
Also in: linux-arm-kernel

Hi Sanjeev,

Sanjeev Premi [off-list ref] writes:
When multiple wakeup sources are defined in a system,
there is a small window, when more than one source
can trigger wakeup interrupt.

In the current implementation, the do-while() loop
can handle all wakeup sources that are recorded when
probing the status register in prcm_interrupt_handler().

When the ISR executes due to next queued wakeup, it
there is nothing to be handled and value of "c" is 0.
Thanks for tracking this one down.

However, It's still not clear to me what is happening here.

Why is the IRQ firing if there is nothing to be handled?  That suggests
to me that the IRQ status is not properly being cleared.

Kevin
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