Red Hat Bugzilla – Bug 112756
PNP missing in 2.6 kernel
Last modified: 2015-01-04 17:04:16 EST
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Description of problem:
The ISA PNP tools have been replaced with in kernel code, but that
code is not enabled in the current kernel builds. This is needed for
many ISA card to work.
In my case it's a PCMCIA socket. Vadem VG-469 ISA-to-PCMCIA, using the
i82365 driver. Enabling ISA-PNP in the kerenbl config allows it to work.
I'm currently using this options:
The DEBUG option is probably not needed.
I also noticed most/all of the ALSA ISA sound cards are not
configured. Many/most of them would use the PNP options too. The OSS
version are on.
Is there any particular reason not to include ISA PNP?
What about the ALSA drivers for ISA cards?
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. boot a 2.6 kernel from people.redhat.com/arjanv/2.5
2. PCMCIA fails to start
3. no PCMCIA devices can be used
PCMCIA is not avaliable because the ISA-PCMCIA adapter is not
configured. This is an add-in card, and BIOS won't configure it
Expected Results: The kernel level ISAPNP driver should configure the
adapter, the PCMCIA starts and cdevices can be used.
Rebilding the kernel with ISAPNP and PNPBIOS allows the adaptor to
work along with my PCMCIA devices (mostly CompactFlash cards).
This worked in the 2.4 kernels.
PNPBIOS is a really really bad option to enable since it crashes on a
lot of machines (and is not needed for ISAPNP operation anyway).
OK. So PNPBIOS isn't needed. I just turned on all the PNP options, and
Still shouldn't ISAPNP be on? Or some support for configuring the
devices? Does turningf on ISAPNP have any sideeffects to warrant
turning it off for most?
enabled in errata.