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. > 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? -- Elvis
