Messages in this thread | | | Date | Tue, 23 Sep 2014 16:38:16 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH linux-next] Documentation: mic: mpssd: Disable mpssd builds for kernels < 3.13 |
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On Tue, 23 Sep 2014 19:23:39 -0400 Peter Foley <pefoley2@pefoley.com> wrote:
> On Tue, Sep 23, 2014 at 6:59 PM, ashutosh dixit > <ashutosh.dixit@intel.com> wrote: > > Correct, if things in Documentation will be compiled against the headers > > in the kernel source tree then this patch is not required. However, > > Andrew had reported the following compile error: > > > >> In file included from Documentation/mic/mpssd/sysfs.c:21: > >> Documentation/mic/mpssd/mpssd.h:55:30: error: linux/virtio_ids.h: No such file or directory > > > > which made it appear to us that Documentation was being compiled against > > headers installed on the system, not headers in the kernel source > > tree. The patch was submitted to address this latter case, but if that > > does not occur it is not required. > > > Alright, if you want to handle the case where somebody is trying to > build against old and incompatible headers, > just have a #error "Your kernel headers are too old, at least 3.13 is > required" at the top of mpssd.c instead of having it fail at runtime. >
This build error is caused by compiling mpssd prior to `make headers_install'.
There's really no reason to check the kernel version. If someone transplants mpssd out of its distributed kernel and into some older kernel then a miscompile is their problem - their backport is incomplete.
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