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Date: Tue, 13 Jan 2004 18:20:13 +0000
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
To: linux-kernel@vger.kernel.org
Subject: 2.4 kernel pci hot-swap fails on Acer TM C100
Message-ID: <20040113182013.GH18959@lkcl.net>
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hi, thought someone might like to take a look some time at the
pci hot-plug code to cope for "instantaneous" hotplugging.

the acer c100 travelmate has built-in ethernet _and_ wireless,
with a button on the keyboard that hot-swaps the PCI bus between
the two devices.

the first device is an rtl8139, the second device is a 3.3v
texas instruments PCMCIA chip with an orinoco hermes 802.11b
wireless behind that.

whilst the PCI devices change, pretty much instantly when
the button is pressed, the IRQ doesn't.

thought someone might like to know, because hot-swapping between
the rtl8139 and the hermes devices definitely doesn't work: the
kernel must be started with one or the other.

swapping back doesn't work either [pressing the button twice]:
if swapping from rtl8139 to hermes and back you get ethernet
timeout messages.

l.

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