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    SubjectRe: [BISECTED] ipmi_si not loading since 2.6.39
    On 04/20/2012 05:38 PM, Nikola Ciprich wrote:
    > Hello,
    > I was trying to find out why IPMI stopped working on new kernels. Since 2.6.39
    > module loading ends with following message:
    > ipmi_si: Interface detection failed
    > Then ipmitool is unable to control IPMI device.
    > Works for 2.6.38, doesn't work for 2.6.39, 3.0.28, 3.4-rc1.
    > I got this bisected to following commit:
    > commit a1e9c9dd3383e6a1a762464ad604b1081774dbda
    > Author: Rob Herring<>
    > Date: Wed Feb 23 15:37:59 2011 -0600
    > ipmi: convert OF driver to platform driver
    > of_bus is deprecated in favor of the plain platform bus. This patch
    > merges the ipmi OF driver with the existing platform driver.
    > CONFIG_PPC_OF occurrances are removed or replaced with CONFIG_OF.
    > Compile tested with and without CONFIG_OF. Tested OF probe and
    > default probe cases.
    > Signed-off-by: Rob Herring<>
    > Signed-off-by: Grant Likely<>
    > I wonder whether this is a bug, or I'm doing something wrong?

    If it used to work and now it doesn't, that's probably a bug, though you
    might be able to work around it with some direct settings.

    What hardware is involved? 'cat /proc/ipmi/0/params' on a working
    kernel would be handy. You can use that information to hot-add the BMC,
    that should be documented in Documentation/IPMI.txt


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