On Wed, 2007-08-08 at 16:43 +0000, Dave Young wrote:
quoted text
> Hi,
> 
> [This fix is not very good for the global variable, any comments are
> welcome.]
> 
> The thinkpad_acpi module_init fail out entrace is not very properly. if
> failing before register driver or before create sysfs file, the
> module_exit will try to remove nonexist sysfs files, the kernel will
> oops.
This one is already fixed in Len's git tree in the test branch and will
get merged to Linus soon (commit id:
ac36393de6034be7266264a435360e7628849005).

The (similar) patch got posted on linux-acpi with subject:
[PATCH 05/12] ACPI: thinkpad-acpi: fix the module init failure path
(Fri,  3 Aug 2007 18:33:38)

    Thomas

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