From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Mark Lord <lkml@rtr.ca>
Cc: 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 23:21:41 +0100 [thread overview]
Message-ID: <1150755701.2871.49.camel@localhost.localdomain> (raw)
In-Reply-To: <44971C95.7050700@rtr.ca>
Ar Llu, 2006-06-19 am 17:52 -0400, ysgrifennodd Mark Lord:
> > This is not the case for ISA bus. Most ISA hardware is physically unable
> > to share and the drivers for such hardware intentionally grab the IRQ at
> > load time to avoid it being mis-reused.
>
> Eh? The vast majority of ISA bus devices have open-collector IRQ lines,
Not in my experience. In the network work at least very few are, they
all drive the chip lines all the time. Thats why Don Becker made sure
such drivers grab the lines at startup. Those which can share IRQ or
move IRQ grab at open
Alan
next prev parent reply other threads:[~2006-06-19 22:06 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
2006-06-19 21:06 ` Alan Cox
2006-06-19 21:52 ` Mark Lord
2006-06-19 22:21 ` Alan Cox [this message]
[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
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