lkml.org 
[lkml]   [2012]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: mfd regmap irq to handle some cases
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?


\
 
 \ /
  Last update: 2012-01-23 12:55    [W:0.060 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site