In this repository are two kernel modules which can be built and used to enumerate information on devices on the I²C and PCI kernel busses. They were not written by me, but unfortunately the original author has taken some effort to stay anonymous. Links to the original sources are left under the respective module descriptions.
To build the modules for your running kernel simply run the command:
$ make
This will output the files i2cscan.ko and pciscan.ko, which can be loaded.
In the event that you do not wish to run them against your running kernel, but
another set of sources within the path /lib/modules/$(KERNELVER)/build
you may run:
$ make KERNELVER=3.9.6
Replacing 3.9.6 with your desired kernel version.
Finally, if you wish to specify an arbitrary path (as the author of this
README.md does) extract the desired kernel version to the path /some/path/here
and then run the command:
$ make KERNELHEADERS=/some/path/here
This is especially useful when you are trying to compile these modules for a
remote device and you are only able to identify the running version with
uname -r.
In addition, if you have done a raw checkout/untar of sources from Kernel.org there may be additional steps that you have to take. Some old kernels will be missing files, but can be solved very easily. Refer to [Various Errors/Errata] for more information.
i2cscan is a Linux kernel module originally appearing on the blog godandme designed to scan the I²C bus and enumerate devices.
pciscan is a Linux kernel module originally appearing on the blog godandme designed to scan the PCI bus and enumerate devices.
include/linux/compiler-gcc.h:103:30: fatal error: linux/compiler-gcc5.h: No such file or directory
compilation terminated.
It means that the kernel did not ship with headers knowledgeable about the various capabilities of GCC Version 5. In this case, GCC can operate in a backwards compatible manner, but we will need to redirect these calls. In the source kernel source tree run:
echo "#include <linux/compiler-gcc4.h>" > include/linux/compiler-gcc5.h
ERROR: Kernel configuration is invalid.
include/generated/autoconf.h or include/config/auto.conf are missing.
Run 'make oldconfig && make prepare' on kernel src to fix it.
You'll need to put in a sample config (if you don't have a default kernel config) and prep the tree to be built. In the kernel source tree run:
make oldconfig && make prepare
/bin/sh: /home/user/Projects/linux-3.9.6/scripts/recordmcount: No such file or directory
The kernel includes many helper scripts to identify the location of
system/toolchain components. These need to be generated via the Makefile.
In the kernel source tree run:
make scripts