[SOLVED] CONFIG_HAVE_EISA can't be turned off

RandomTroll · 09-09-2023, 04:59 PM

Even if I have CONFIG_EISA not set, and unset CONFIG_HAVE_EISA , CONFIG_HAVE_EISA gets set to y. The help refers me to x86, which is in arch. arch isn't an option in make menuconfig. What's going on? Is CONFIG_HAVE_EISA necessary for all x86 machines?

smallpond · 09-10-2023, 08:37 AM

Yes. X86 selects HAVE_EISA https://elixir.bootlin.com/linux/lat...6/Kconfig#L215

Why would you want to turn it off? I thought some x86 chipsets still use backward-compatible I/O devices internally.

RandomTroll · 09-10-2023, 10:00 PM

Quote:

Originally Posted by smallpond

Why would you want to turn it off?

I have no EISA bus. It adds time to the build, size to the kernel. I don't remember it as popular. I turned off PCMCIA when my laptops no longer supported it.

Quote:

Originally Posted by smallpond

I thought some x86 chipsets still use backward-compatible I/O devices internally.

Some hardware protocols are perpetuated internally. I didn't think EISA is, hope I'm wrong.