On Sun, Mar 19, 2017 at 10:53 AM, SIMRAN SINGHAL <singhalsimran0@xxxxxxxxx> wrote: > # modinfo iio_dummy_evgen.ko > filename: > /home/simran/git/kernels/staging/drivers/iio/dummy/iio_dummy_evgen.ko > license: GPL v2 > description: IIO dummy driver > author: Jonathan Cameron <jic23@xxxxxxxxxx> > srcversion: A8AC238EC07833E018CAF7B > depends: industrialio > intree: Y > vermagic: 4.11.0-rc1+ SMP mod_unload modversions > > > $ uname -r > 4.10.0-rc3+ > > So, this shows that I need to compile module iio_dummy_evgen.ko for > kernel version 4.11.0-rc1, so for this I need to build system and > source tree for this version. > > So, I am trying this:- > make -C /lib/modules/4.11.0-rc1+/build M=drivers/iio/dummy/ iio_dummy_evgen.ko > > But I don't know why I am getting this error:- > make: Entering directory '/home/simran/git/kernels/staging' > make[1]: *** No rule to make target 'iio_dummy_evgen.o'. Stop. > Makefile:1664: recipe for target 'iio_dummy_evgen.ko' failed > make: *** [iio_dummy_evgen.ko] Error 2 > make: Leaving directory '/home/simran/git/kernels/staging' > > > On Tue, Mar 14, 2017 at 12:19 AM, <valdis.kletnieks@xxxxxx> wrote: >> On Mon, 13 Mar 2017 15:38:07 +0530, SIMRAN SINGHAL said: >> >>> >> # modinfo iio_dummy_evgen.ko >>> >> filename: >> >>> >> vermagic: 4.11.0-rc1+ SMP mod_unload modversions >>> >> >>> >> >>> >> $ uname -r >>> >> 4.10.0-rc3+ >> >>> Greg, I got that I have to build the module against the kernel I am using. >>> But, How can I do this? >> >> You can do this in two different ways: >> >> 1) You're running a 4.10.0-rc3+ kernel. Get the matching 4.10.0-rc3+ source >> tree and build the module against that. >> >> 2) You built the module from a 4.11.0-rc1+ tree. Build a kernel from that tree, >> boot that, and then try to load the module. >> >> You're running 4.10.0-rc3+. Your module is 4.11.0-rc1+. The command line you supplied shows you attempting to recompile your module for 4.11.0-rc1+. Your module is already 4.11.0-rc1+. As has been pointed out before, you need to either: (a). recompile your module for 4.10.0-rc3+. (b). or, install and boot into kernel 4.11.0-rc1+, and then try loading your module. As a side note, what kernel tree are you developing your driver against? The location of your staging drivers directory seems different from Linus' tree: ls -ld torvalds/drivers/staging/iio/ drwxr-xr-x 14 sasha sasha 4096 Feb 13 21:24 torvalds/drivers/staging/iio/ Finally, please do not top-post. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
