From: Mark Lord <lkml@rtr.ca>
To: Chris Rankin <rankincj@yahoo.com>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: Re: Linux 2.6.17: IRQ handler mismatch in serial code?
Date: Mon, 19 Jun 2006 15:45:06 -0400 [thread overview]
Message-ID: <4496FEC2.8050903@rtr.ca> (raw)
In-Reply-To: <20060619184706.GH3479@flint.arm.linux.org.uk>
Russell King wrote:
>
> This seems to be an invalid situation - you appear to have an _ISA_
> NE2000 card using IRQ3, trying to share the same interrupt as a
> serial port.
>
> ISA interrupts aren't sharable without additional hardware support
> or specific software support in the Linux kernel interrupt
> architecture.
If the drivers are written "correctly", they shouldn't grab the IRQ
until someone actually opens the device. Which means they should be
able the share the IRQ, so long as both devices are not in use (open)
at the same time.
Cheers
next prev parent reply other threads:[~2006-06-19 19:45 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-19 18:06 Linux 2.6.17: IRQ handler mismatch in serial code? Chris Rankin
2006-06-19 18:47 ` Russell King
2006-06-19 19:40 ` Chris Rankin
2006-06-19 19:44 ` Russell King
2006-06-20 1:00 ` Adam Belay
2006-06-20 7:50 ` Chris Rankin
2006-06-19 19:45 ` Mark Lord [this message]
2006-06-19 21:06 ` Alan Cox
2006-06-19 21:52 ` Mark Lord
2006-06-19 22:21 ` Alan Cox
[not found] <6pwmi-8mW-1@gated-at.bofh.it>
[not found] ` <6px8R-Y7-43@gated-at.bofh.it>
[not found] ` <6pxV5-2ci-13@gated-at.bofh.it>
[not found] ` <6pz12-3Rg-67@gated-at.bofh.it>
[not found] ` <6pzX4-5jE-19@gated-at.bofh.it>
[not found] ` <6pA6B-5K8-33@gated-at.bofh.it>
2006-06-20 14:39 ` Bodo Eggert
2006-06-20 18:03 ` Russell King
2006-06-20 23:20 ` Bodo Eggert
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4496FEC2.8050903@rtr.ca \
--to=lkml@rtr.ca \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
--cc=rankincj@yahoo.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox