On Sun, Dec 09, 2007 at 04:12:25PM -0500, Elvis Pranskevichus wrote: > Jean Delvare wrote: > > > Hi Mike, > > > > On Sat, 8 Dec 2007 21:22:34 -0500, Mike Houston wrote: > >> On Sun, 9 Dec 2007 01:05:54 +0100 > >> Adrian Bunk <bunk at stusta.de> wrote: > >> > >> > On Tue, Dec 04, 2007 at 09:51:54PM -0500, Mike Houston wrote: > >> > > I finally got around to testing Linux 2.6.24 (2.6.24-rc4) and > >> > > found that the it87 driver fails to probe and consequently, my > >> > > sensors no longer work. This was fine with Linux 2.6.23.8 (the > >> > > last kernel I was using) > >> > > > >> > > The necessary modules load, but: > >> > > > >> > > it87: Found IT8718F chip at 0x290, revision 2 > >> > > it87: in3 is VCC (+5V) > >> > > it87 it87.656: Failed to request region 0x290-0x297 > >> > > it87: probe of it87.656 failed with error -16 > >> > > > >> > > Coretemp still works. > >> > > > >> > > It appears it has something to do with the ioport range being > >> > > reserved for some reason: > >> > > > >> > > system 00:01: ioport range 0x290-0x29f has been reserved > >> > >> > > >> > Thanks for your report. > >> > > >> > Please also provide: > >> > - dmesg from 2.6.23.8 > >> > - The output of "cat /proc/ioports" for both kernels > >> > >> Thanks Adrian, here is the information you have requested, for > >> both kernels (I have 2.6.23.9 now though where it87 still works) > >> > >> Linux 2.6.23.9: > >> http://www.mikeserv.com/temp/proc_ioports-2.6.23.9.txt > >> http://www.mikeserv.com/temp/dmesg-2.6.23.9.txt > >> http://www.mikeserv.com/temp/config-2.6.23.9.txt > >> > >> Linux 2.6.24-rc4: > >> http://www.mikeserv.com/temp/proc_ioports-2.6.24-rc4.txt > >> http://www.mikeserv.com/temp/dmesg-2.6.24-rc4.txt > > > > This one shows: > > > > system 00:01: ioport range 0x290-0x29f has been reserved > > (...) > > system 00:01: ioport range 0x290-0x294 has been reserved > > > > This is clearly not correct as both areas overlap. The second > > reservation is responsible for the it87 breakage, because it conflicts > > with what the it87 driver later attempts to request (0x290-0x297). The > > first is wrong as well (the IT87xxF environment controller I/O area is > > 8 port wide, not 16) but shouldn't be a problem in practice. > > > > These port reservations weren't happening in 2.6.23.9 according to your > > dmesg output for that kernel. I don't know what changed in this area > > since 2.6.23.9, maybe Bjorn or Adam (Cc'd) can tell. > > > > Hi, > > I have exactly the same problem here on a Gigabyte GA-965G-DS3 motherboard > based box: > > it87: Found IT8718F chip at 0x290, revision 1 > it87: in3 is VCC (+5V) > it87 it87.656: Failed to request region 0x290-0x297 > it87: probe of it87.656 failed with error -16 > > git bisecting revealed the offending commit: > > a7839e960675b54: PNP: increase the maximum number of resources > > Happened between rc3 and rc4. Thanks for doing the work of bisecting! > > Either way, the overlapping areas smell like a BIOS bug, meaning that > > you should look for an updated BIOS for your system first. > > > >> http://www.mikeserv.com/temp/config-2.6.24-rc4.txt > > > > This indeed looks like a broken ACPI BIOS since the aforementioned commit > touches only the PNP ACPI driver. I'm not sure how to work around this, > though. Ideas? People responsible for this commit + ACPI maintainer added to Cc. > Elvis cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed
