Messages in this thread | | | Date | Mon, 23 Jan 2012 11:52:25 +0000 | From | Mark Brown <> | Subject | Re: mfd regmap irq to handle some cases |
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On Mon, Jan 23, 2012 at 02:17:03PM +0530, Ashish Jangam wrote:
Please fix your mailer to word wrap within 80 columns. I've reflowed your text for legibility.
> For a quick fix in regmap irq we may tempt to defer event > clarification after processing of event but there is a problem in this
That's not going to work in general, it means there's a race between handling the interrupt and acknowledging the interrupt which leads to interrupts being dropped if you get a new interrupt before the ack has been written back.
> approach for some variants of DA9052 and DA9053 when event is cleared > a spurious interrupt gets generated therefore in earlier release of > DA9052/53 MFD module a delay was added. Therefore we need to think on > how to handle such cases in regmap irq.
What are the consequences of the spurious interrupt?
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