ci: show kernel headers version and difference against embedded nfc.h

We embed the /usr/include/linux/nfc.h as nfc_copy.h, to compile cleanly
on older kernels (e.g. older than v4.15 without
NFC_CMD_DEACTIVATE_TARGET).  See also commit fb7664e2995f ("include: Add
a copy of the NFC kernel header").  We should sync our local
nfc_copy.h with kernel sources from time to time, but it is easy to
forget this.

Add a separate Continuous Integration step to show kernel headers
version and differences between kernel's nfc.h and our local copy, so we
can notice kernel uses a different one.  This is purely for maintenance.

Signed-off-by: Krzysztof Kozlowski <>
1 file changed