linux-kernel - MX21 keypad driver interrupt issue

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Message-ID: <e65b9ae80611212115r42dccbfcha51d9c1e52964e5e@mail.gmail.com>
Date:	Wed, 22 Nov 2006 11:15:31 +0600
From:	"Dilan Weerakkody" <dilan2005@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: MX21 keypad driver interrupt issue

hi all,
i writing keypad driver on

*mx21 ads board  for
* kernel 2.6.14

i got a problem on interrupt handling ,

the isr routine for kpp

1.when interrupt occur first i disable interrupt by clear KRIE and KDIE bit

2.next i scan key pad matrix

3.clear KPDK bit  (but when i read this bit i can see that KPDK flag
bit is still not cleared)

4.then i enable KDIE bit again

all above 1,2,3,4 written within interrupt handler (is this a problem?);

my problem is KPP interrupt handler run over and over again after once
i touch a key and release it
please help
thanks

dilan
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