Re: w83627ehf can not be modprobed as of 3.3-rc1

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On Sat, 21 Jan 2012 18:27:17 +0100, Tom Gundersen wrote:
> Hi guys,
> 
> I don't know the importance of this, or if it is even a bug, but I get
> a difference in behavior when updating from 3.2 to 3.3:
> 
> # modprobe w83627ehf
> FATAL: Error inserting w83627ehf
> (/lib/modules/3.3.0-rc1-ARCH/kernel/drivers/hwmon/w83627ehf.ko):
> Device or resource busy
> 
> 
> from dmesg:
> 
> w83627ehf: Found W83627DHG chip at 0x290
> ACPI Warning: 0x0000000000000295-0x0000000000000296 SystemIO conflicts
> with Region \_SB_.PCI0.SBRG.SIOR.HWRE 1 (20120111/utaddress-251)
> ACPI: If an ACPI driver is available for this device, you should use
> it instead of the native driver

That was indeed a bug... in 3.2. Kernels between 2.6.39 and 3.2
(inclusive) lack the ACPI resource conflict check, it was accidentally
disabled. And this is fixed in 3.3.

See
http://www.lm-sensors.org/wiki/FAQ/Chapter3#Mysensorshavestoppedworkinginkernel2.6.31
for details.

-- 
Jean Delvare

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