On Wed, Mar 9, 2016 at 1:59 PM, NeilBrown <neilb(a)suse.com> wrote:
When alloc_disk(0) is used, the ->major number is ignored and
irrelevant. Yet several drivers register a major number anyway.
This series of patches removes the pointless registrations. The pmem
driver also does this, but a patch has already been sent for that
Note that I am not in a position to test these beyond simple compile
nvdimm/blk: don't allocate unused major device number
nvdimm/btt: don't allocate unused major device number
The libnvdimm unit tests were fine with these, applied.
Btw, because you mentioned it, our unit test infrastructure does not
require real hardware. See the ndctl readme , and if you have
copious amounts of free time the lwn write up on how we're mocking