Messages in this thread | | | Date | Sat, 31 Jul 2004 06:28:28 -0700 (PDT) | From | Jon Smirl <> | Subject | Re: [PATCH] add PCI ROMs to sysfs |
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--- Vojtech Pavlik <vojtech@suse.cz> wrote: > On Fri, Jul 30, 2004 at 02:53:25PM -0700, Jon Smirl wrote: > > Here's another grungy thing I needed to do to PCI. Multi-headed > video > > You can do that, but where is the problem with your probe function > being > called twice - once for each of the devices? You should be able to > sort > out which one is which rather easily.
I wrote this a while ago, but I believe the problem was that by accepting two probes I get two hotplug ADD events that I can't tell apart. This scheme avoids triggering hotplug. The other problem was that the ADD events get started in parallel and I couldn't figure out how to serialize them. The parallel hotplug programs got into a race to see who could initialize the card first.
Now that I know more about hotplug I could modify the hotplug parameters to indicate primary vs secondary and ignore the secondary one. But this will still cause two apps to be started in parallel.
Another solution would be to modify the kernel API somehow to let me suppress hotplug ADD/REMOVE on the secondary device.
===== Jon Smirl jonsmirl@yahoo.com
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