From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bernhard Fischer <rep.dot.nop@gmail.com>
Date: Tue, 31 Jul 2007 18:02:46 +0200
Subject: [Buildroot] svn commit:	trunk/buildroot/toolchain/kernel-headers
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On Tue, Jul 31, 2007 at 09:02:20AM -0700, ulf at uclibc.org wrote:
>Author: ulf
>Date: 2007-07-31 09:02:18 -0700 (Tue, 31 Jul 2007)
>New Revision: 19359
>
>Log:
>Remove duplicate patch
>
>Removed:
>   trunk/buildroot/toolchain/kernel-headers/linux-2.6.21.5-ipmisensors-20070314-1214.patch
>   trunk/buildroot/toolchain/kernel-headers/linux-2.6.22.1-ipmisensors-20070314-1214.patch

Did you even look if those two are identical?
They were not and you broke ipmisensor support for 2.6.22.1 :-(