From: "Etienne Lorrain" <etienne_lorrain@yahoo.fr>
To: linux-kernel@vger.kernel.org
Cc: Venu Gopal Krishna Vemula <vvgkrishna_78@yahoo.com>
Subject: Problem in Interrupt Handling ....
Date: Mon, 6 Aug 2001 16:22:36 +0200 (CEST) [thread overview]
Message-ID: <20010806142236.78666.qmail@web11801.mail.yahoo.com> (raw)
> But after some period (may be after 2 –3
> hours) recv interrupts are not coming (all other type
> of interrupts are Ok ..), If I reset the ISR0
> (interrupt status register which contains recv
> interrupt) and enable ISR0, recv interrupts are
> coming.
You have an higher priority interrupt pending on the
"kind of" UART. Probably you have had two interrupts
(TxReady and RxFull) on the same IRQ and you have treated
only one of them, or you have forgotten to treat a modem
interrupt or... Look at the UART interrupt priorities
in your documentation.
This is excluding the obvious case "two serial lines shares
the same IRQ".
Hope that helps,
Etienne.
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next reply other threads:[~2001-08-06 14:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-06 14:22 Etienne Lorrain [this message]
[not found] <no.id>
2001-08-06 13:51 ` Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2001-08-06 13:27 Venu Gopal Krishna Vemula
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