Failed to update lm_sensors-2.10.7

Another problem trying to update a gentoo machine, getting the following error:

make: *** No rule to make target `asm/bitsperlong.h', needed by `prog/dump/i2cbusses.rd'. Stop.
*
* ERROR: sys-apps/lm_sensors-2.10.7 failed.
* Call stack:
* ebuild.sh, line 49: Called src_compile
* environment, line 3443: Called die
* The specific snippet of code:
* emake CC=$(tc-getCC) LINUX=${KV_DIR} I2C_HEADERS=${KV_DIR}/include user || die "emake user failed"
* The die message:
* emake user failed
*
* If you need support, post the topmost build error, and the call stack if relevant.
* A complete build log is located at '/var/tmp/portage/sys-apps/lm_sensors-2.10.7/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/sys-apps/lm_sensors-2.10.7/temp/environment'.
*

>>> Failed to emerge sys-apps/lm_sensors-2.10.7, Log file:

2.10.7 appears to have some bugs. Solution:

nano /etc/portage/package.keywords
>sys-apps/lm_sensors-2.10.7