Re: [PATCH 2/2] i2c: i2c-omap: Call request_irq with IRQF_DISABLED

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Paul Walmsley <paul@xxxxxxxxx> writes:

> Hi Felipe,
>
> On Thu, 12 Mar 2009, Felipe Balbi wrote:
>
>> On Wed, Mar 11, 2009 at 05:55:50PM -0600, Paul Walmsley wrote:
>> > Ben's right, there shouldn't be any need for this.  This patch could cause
>> > some unnecessary interrupt service latency.
>> 
>> That's not what Thomas Gleixner thinks. How about the possibility of
>> stack overflow ?
>
> That sounds like a separate issue from the spurious IRQ problem that the 
> patch was intended to fix.   

I agree.  The IRQF_DISABLED happens to fix this issue, but it may be
masking the real spurious issue as Paul suggested.

> I'm not familiar with the discussion on the stack overflow issue.  Could 
> you send a link?
>

Here's one:

  http://marc.info/?l=linux-kernel&m=123607359500596&w=2

Kevin

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